Is there a place for kinesiotape in modern osteopathic practice? Author: Richard Moore, 07004959 Abstract Background Kinesiotaping (KT) was developed by Kenso Kase in the 1970s as a method of assisting physical treatment of damaged tissue whilst maintaining full range of motion. It works by lifting the epidermis to reduce compression of underlying tissues and aid venous and lymphatic movement. The aim of this paper was to identify evidence for the use of KT in the treatment of musculoskeletal conditions and suggest how this could inform osteopathic treatment. Method A critical literature review was conducted to investigate the effect of KT on musculoskeletal conditions. Five electronic databases (PUBMED, AMED, PEDRO, CINAHL, SPORTDiscus) and five key websites were searched up to 19th November 2011. 9 randomised controlled trials met specified inclusion criteria. The CASP RCT appraisal tool was used to assess validity and quality of each trial. Results Three papers discussed use of KT in patello-femoral pain, three for shoulder impingement, one for whiplash-affected disorder, one for plantar fasciitis and one for chronic low back pain. Methodology was varied with taping protocols, comparison and measured outcomes inconsistent across the studies. Positive effects were seen in muscle flexibility, pain, disability and fascia thickness when compared to manual therapy and sham taping. Conclusion Despite considerable heterogeneity of study design, positive effects of KT have been identified and could be utilised by osteopaths in the treatment of acute or chronic conditions. Further research with larger study groups and homogeneous methodology should be undertaken to provide definitive results in treatment of named conditions. Keywords: kinesiotaping, osteopathy, patellofemoral pain, shoulder impingement (250 words) Contents INTRODUCTION ........................................................................................................... 3 Aims ......................................................................................................................................................... 8 METHODS ...................................................................................................................... 9 RESULTS ...................................................................................................................... 13 Emergent Themes .................................................................................................................................. 20 DISCUSSION ................................................................................................................ 21 Kinesiotaping as a viable alternative ..................................................................................................... 26 Limitations of studies assessing efficacy of kinesiotape ........................................................................ 27 Limitations of this review....................................................................................................................... 28 CONCLUSION.............................................................................................................. 29 Opportunities for future research ......................................................................................................... 29 ACKNOWLEDGMENTS ............................ ERROR! BOOKMARK NOT DEFINED. REFERENCES .............................................................................................................. 30 Introduction Kinesiotaping was developed by Japanese chiropractor Kenso Kase in the 1970s as a method of assisting physical treatment of damaged tissue whilst maintaining full range of motion, unlike traditional taping methods, which restrict movement (Kinesio UK, 2011). Popular applications include patellar or achilles tendinopathy, acute shoulder impingement and lower back strain (Konin, 2010). The Kinesio Taping Association (KTA) has over 10,000 members worldwide and is training professionals at a rate of over 800 per year in the UK alone (Slater, 2012). Kinesiotape (KT) first gained widespread attention at the 1988 Seoul Olympics, where 50,000 rolls were donated to 58 countries, giving the product exposure on the world stage (Lowes, 2008). Since then, high profile athletes such as Lance Armstrong, Rory McIlroy and David Beckham have popularised use of the tape (Wintle, 2012). KT’s ability to longitudinally stretch and the direction that it is applied, offers the therapeutic value (Kase et al, 2003). The tape works by lifting the epidermis, as the tape recoils after being applied with tension (Figure 1). This lifting increases interstitial space between the skin and the underlying connective tissues, vessels and muscles to reduce compression and aid lymphatic and venous movement (Yoshida & Kahanov, 2007). Taped/“Lifted” area = reduced compression on interstitial space Non-Taped Area = blood and lymph vessels compressed beneath epidermis Figure 1: The effect of kinesiotape on the skin and underlying tissue (Hitech Therapy, 2012). The ‘lifting’ also has an effect on underlying fascia, reducing pain, decreasing susceptibility to microtrauma and improving muscle performance (O'Sullivan & Bird, 2011). The therapeutic effect is the same for all available colours and is dependant on how the tape is applied. Figure 2 demonstrates a typical application to inhibit a strained muscle, tension being applied distally to proximally along the muscle, with 15-25% tension. Figure 3 shows application in the opposite direction to facilitate a weakened muscle, with 15-35% tension. Figure 2: Muscle Inhibition. (Biceps brachii) Figure 3: Muscle Facilitation (Biceps brachii) Application to aid oedema is shown in Figure 4. A single strip is cut into multiple tails placed over the oedema with 0-20% tension. The ‘head’ of the tape is placed towards the target lymph nodes. KT can also be used to stabilise by placing it over the unstable joint, with all the stretch removed, applying over 75% tension (Figure 5). Figure 4: Lymphatic correction. Figure 5: Mechanical support (Acromioclavicular joint) The effect on healthy individuals has been the subject of observational studies, focussed on a range of outcomes, including muscle strength and motor nerve conduction. Of the fifteen trials identified (Table 1) seven returned positive results in all or some of the outcomes measured, whilst the remaining studies found nil or inconclusive results. Where numerous trials have looked at the same outcome, results are contradictory. In the case of grip strength, Chang et al (2010) found no positive effect from KT applied to the forearm, compared to sham and no taping, whilst Lee et al (2010) found a clear improvement in grip strength, albeit without a control group. Similar contradiction is found in studies looking at effect on the quadriceps. Aktas & Baltaci (2011) found a positive effect on jump height, Słupik et al (2007) noticed an increase in motor unit recruitment after taping, whilst Vithoulkaa et al (2010) found that the overall effects of KT mixed, with eccentric force improved but concentric force the same as control and Fu et al (2008) found no positive effect. Table 1: Studies investigating physiological effects of kinesiotaping in healthy individuals Study Effect tested / Application Sample size Outcome Aktas & Baltaci, 2011 Muscle strength Jump height (quadriceps) 20 (9 male, 11 female) Positive (jump & peak torque) Chang et al, 2010 Grip strength (forearm flexors) 21 (all male). Nil Firth et al, 2010 Single leg hop test, pain. (Achilles tendon) Muscle strength (quadriceps and hamstrings) Proprioception (lateral & medial lower leg) Sporting performance (diaphragm) 48 (24 asymptomatic, 24 achilles tendonitis) 14 (7 male, 7 female). Nil 30 (15 male. 15 female) Nil 17 (10 male, 7 female) Nil Huang et al, 2011 Vertical jump (triceps surae) 31 (19 male, 12 female) Nil Lee et al, 2010 Grip strength (forearm flexors) 40 (20 male, 20 female) Positive Lee et al, 2011 Motor nerve conduction velocity Pelvic tilt (lumbar erector spinae) Motor perception (knee) Muscle activity (Vastus medialis) 17 (9 male, 8 female) 40 (23 male, 17 female). Nil 19 (9 male, 8 female) 27 (15 male, 12 female) Positive Muscle strength (masseter) Muscle strength (quadriceps) 11 (7 male, 4 female) 20 (all female) Nil Fu et al, 2008 Halseth et al, 2004 HombradosHernándeza et al, 2011 Lee, Yoo & HwangBo, 2011 Lou, 2008 Słupik et al, 2007 Soylu et al, 2011 Vithoulkaa et al, 2010 Yoshida & Kahanov, 2007 Trunk range of motion 30 (15 male, 15 (lumbar erector female) spinae) Nil Positive Positive Positive (eccentric torque) Positive (flexion only) Overall, studies involving healthy individuals found some positive effect on muscle strength (Soylu et al 2011, Lee et al 2010, Vithoulkaa et al 2010), flexibility (Yoshida & Kahanov 2007, Lee et al 2011) and motor nerve conduction (Lee et al 2011), suggesting that KT could be used in the treatment of musculoskeletal conditions. Further examination of studies investigating the use of KT is indicated along with how this information could successfully be used by osteopaths in the treatment of common musculoskeletal conditions, adhering to established osteopathic principles. Aims It is the aim of this paper to identify evidence for the use of kinesiotaping in the treatment of musculoskeletal conditions and how this information could be used in an osteopathic setting. Studies will be included if investigating the use of the KT in a pathological state through a controlled trial, with observational studies or those conducted solely on healthy individuals excluded. Based on these findings, the implications on osteopathic care will be discussed and opportunities for further research suggested. This is framed in the question: “Is there a place for kinesiotaping in modern osteopathic practice?” Methods As an initial search of the Cochrane Library found no existing systematic or literature reviews, PUBMED, AMED, CINAHL, PEDRO and SPORTDiscus databases were searched up to 19th November 2011, with the following string: (kinesio tap*) OR (kinesiotap*) OR (k-tap*) Additional to the database searching, the websites of the Osteopathic Research Web (www.osteopathic-research.com), OSTMED (www.ostmed-dr.com), Journal Of American Osteopathic Association (www.jaoa.org/), Chiropractic & Manual Therapies (www.chiromt.com) and Open Grey (www.opengrey.eu) were also searched. Once all duplicates had been removed, inclusion and exclusion criteria (Table 3) were applied to these results. To focus results, all studies where kinesiotape was not the primary focus were removed, as were treatments for non-musculoskeletal conditions such as cerebral palsy and breast cancer. Observational studies on healthy individuals were also discarded. Only controlled trials were selected for review. Hand searching of the selected papers returned ten additional papers, one of which met all the relevant inclusion and exclusion criteria. This gave a total of nine papers to be assessed (Figure 8). The nine studies selected were then subjected to the CASP assessment tool (Table 4). All papers submitted for CASP assessment were found to be of a high enough quality to be included in the review. Table 3: Selection criteria for papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. Population Inclusion criteria Exclusion criteria Reasoning Human Non-human Primary MSK condition being treated Healthy individuals To focus on conditions that may typically present to an osteopath to maximise relevance Non-MSK presentation e.g. cerebral palsy Intervention Kinesiotape only Application by trained professionals using recognised techniques Non-elastic tape Multi-modal interventions/comparisons Applications not specified, described or focussed on condition being treated Control Control group receiving sham or no taping Lack of control group Outcome Studies using objective methods to identify change is muscle activity, range of motion in specific muscles/joints alongside subjective measures Randomised controlled clinical trials, controlled clinical trials, controlled pilot studies Studies solely using subjective measures such as pain scales Published in English language Non-English language Study design Independent from tape manufacturer, trainer or distributor Published in past 10 years Studies not relating findings to identified pathology Case reports Observational studies on asymptomatic participants Literature reviews, metaanalyses Studies funded by tape manufacturers / trainers To identify effect on pathological state rather than effect on healthy tissues To identify studies looking at kinesiotape rather than traditional athletic tape / ‘McConnell’ tape To focus on effect of kinesiotape To ensure tape is used effectively To measure effect of tape against sham / no tape or alternative intervention rather than alternative taping applications To reduce possibility of bias (Kane, 2004) To identify effect of intervention on identified pathology Focus on highest form of evidence (Sackett, Rosenberg, Gray, Haynes, & Richardson, 1996) Primary studies only (Aveyard, 2008, p. 23) English language studies can only be used due to resource limitations To reduce possibility of bias Most recent material only Searching electronic databases (n=117) PubMed PEDro CINAHL AMED SPORTDiscus 27 17 43 24 6 Osteopathic Research Web OSTMED JAOA Chiropractic & Manual Therapy Open Grey 0 0 0 0 0 Duplicates removed (n=49) Abstracts retrieved (n=68) Papers reviewed (n=33) Papers selected (n=8) Reference list searches (n=10) Additional papers (n=1) Excluded (n=35) Case reports Articles Non-English 9 10 16 Excluded (n=25) Non-MSK Healthy individuals Non-controlled Multimodal 3 8 11 3 Excluded (n=9) Non-English Case reports Healthy individuals Non-controlled Multimodal 3 2 3 1 3 Papers selected for review (n=9) Figure 8: Flowchart showing literature selection process for papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. Table 4: Critical appraisal results using CASP tool for selected papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. 1 Akbas et al (2011) Aytar et al (2011) Chen et al (2008) GonzalezIglesias et al (2009) Hsu et al (2008) Kaya et al (2010) Paoloni et al (2011) Thelen et al (2008) Tsai et al (2010) CASP Questions ( = Yes; ? = Unclear; = No) 2 3 4 5 6 7 8 9 10 ? ? ? ? ? ? ? ? ? ? Results Nine studies were identified with a total of 326 participants, investigating the effect of kinesiotape (KT) on patellofemoral pain (n=3), shoulder impingement (SI) (n=3), whiplash affected disorder (n=1), chronic lower back pain (n=1) and plantar fasciitis (n=1). Table 5 summarises the results for the use of KT in patello-femoral pain (PFPS). Akbas et al (2011) found that KT in conjunction with strengthening exercises and soft tissue massage achieved faster improvements (significant at three weeks) in both pain and muscle flexibility when compared to exercise and massage alone, although final outcome levels at six weeks were similar in both groups. The two remaining studies (Aytar et al, 2011 and Chen et al, 2008) looked at the effects of KT immediately after application. Aytar et al (2011) examined the effect on pain alongside balance, proprioception and muscle strength when compared to sham tape. Although there were no statistically significant differences in pain and proprioception after application, positive effects were seen on muscle strength and dynamic balance in the KT group. Finally, Chen et al (2008) investigated the effects on stair climbing and found ground force reaction reduced when descending and muscle firing improved in the symptomatic KT group. No positive results were seen in the asymptomatic group despite identical application of KT. Table 6 summarises the results for the use of KT in shoulder impingement. Hsu et al (2009) adopted a pre-test and post-test model, comparing KT to sham tape applied across the lower trapezius of symptomatic baseball players. Scapular movement improved in both groups, as did activation of the upper trapezius and serratus anterior but the KT group also showed improvements in activity and strength of the lower fibres of trapezius. Thelan et al (2008) and Kaya et al (2010) both investigated the effects on pain and disability, with a similar taping protocol across supraspinatus, deltoid and teres minor. Table 5: Summary of results from selected papers investigating efficacy of kinesiotape in treatment of patello-femoral pain syndrome (PFPS). Study Akbas et al, 2011 Aytar et al, 2011 Chen et al, 2008 Presenting condition PFPS (n = 31) Outcomes measured Experimental group Control group Summary of results 1. Pain 2. Soft tissue flexibility 3. Patellar positioning 1. Strengthening exercises 2. Soft tissue massage (n = 15) Pain, flexibility improved in PFPS (n = 22) 1. Pain 2. Muscle strength 3. Proprioception 4. Balance 1. KT to facilitate quadriceps, ilio-tibial band (ITB) and hamstrings 2. Strengthening exercises 3. Soft tissue massage (n = 16) KT to quadriceps and around patella (n = 12) Identical taping but with non-flexible sticking plaster (n = 10) Strength improved in both PFPS (n = 25) 1. Ground force reaction (GRF) 2. Muscle firing KT to facilitate vastus medialis and inhibit vastus lateralis – PFPS sufferers (n = 15) Identical taping in healthy individuals (n = 10) No positive effect seen in both groups by end of trial Flexibility of soft tissues (hamstrings and ITB) occurred faster and greater in KT group Neither group saw positive change in patellar position groups (60 = both, 180 = KT only) Balance improved in both groups (static = both, dynamic = KT only) No significant changes in pain or proprioception in either group healthy individuals GRF reduced in descending stairs in KT group Timing of activation of vastus medialis improved in KT group Key: KT = Kinesiotaping ; PFPS = Patello-femoral Pain Syndrome Kaya et al (2010) compared KT applied every three days, along with guided home exercises, to a daily programme of ultrasound, TENS, heat pack and home exercise. Pain levels at the end of the two-week trial were similar in both groups but the KT group improved faster with significant differences at the end of week one. Disability scores were more improved (a drop from 57.5 to 18 compared with a drop from 56 to 31 on the DASH 100-point score) in the KT group at the end of the trial. Thelan et al (2008) compared KT to sham tape over a six-day period. By the end of the trial, both groups achieved similar results for improvement of pain-free range of movement but the KT group achieved results after just three days compared to six days for the control group. There was no significant difference in pain or disability in either group by the end of the trial. Table 7 summarises the results for the use of KT in chronic low back pain (CLBP), whiplash affected disorder (WAD) and plantar fasciitis (PF). Gonzalez-Iglesias et al (2009) investigated the effect of KT on pain and cervical range of motion following WAD over a 24 hour period when compared to sham KT (applied with no tension). Although there were statistically-significant improvements to both pain and range of motion in the KT group at the end of the trial, both were at levels deemed not clinically relevant. Paolini et al (2011) studied the effects on chronic low back pain across three groups; KT only, KT plus home exercises and home exercises only. An immediate effect was seen on pain in all KT groups but it was the home exercise group that showed most improvement in disability at the end of the 4-week trial. The last paper, Tsai et al (2010) focussed on plantar fasciitis, comparing KT with daily physical therapy. Both pain and foot function improved more in the KT group and there was a significant reduction in plantar fascia thickness, as measured by ultrasound, at the insertion site on the calcaneus in the KT group. However, plantar fascia thickness at the site of most significant inflammation was unchanged in both groups. Table 6: Summary of results from selected papers investigating efficacy of kinesiotape in treatment of shoulder impingement (SI). Study Hsu, et al, 2009 Kaya et al, 2010 Thelen et al, 2008 Presenting condition Shoulder impingement (n = 17) Outcomes measured Experimental group Control group Summary of results 1. Shoulder kinematics 2. Muscle activity 3. Muscle strength KT to lower trapezius (n = 17) Identical taping but with non-flexible 3M tape (n = 17) Improved scapular posterior Shoulder 1. Pain impingement 2. Disability (n = 55) KT over supraspinatus, deltoid and teres minor + home exercise program (n = 30) Ultrasound, TENS, heat pack and exercise daily + home exercise program (n = 25) Pain improved equally by end Shoulder 1. Pain impingement 2. Disability (n = 42) 3. Range of movement (ROM) KT over supraspinatus and deltoid and across coracoid process (n = 21) KT applied with no tension in nontherapeutic areas (n = 21) Immediate improvement in tilt at 30-60 in both groups Increased lower trapezius activity at 60-30 in KT group Decreased activity in same range in control group Increase in serratus anterior and upper trapezius activity in both Increase in strength of lower trapezius in KT group of trial but improvement was initially faster in KT group Disability scores lower in KT group than control group at end of trial ROM in KT group but similar improvement in both groups at end of trial No significant improvements to pain or disability in either group Key: KT = Kinesiotaping ; SI = Shoulder Impingement Table 7: Summary of results from selected papers investigating efficacy of kinesiotape in treatment of whiplash-affected disorder (WAD), chronic low back pain (CLBP) and plantar fasciitis (PF). Study Presenting condition Gonzalez-Iglesias WAD et al, 2009 (n = 41) Outcomes measured Experimental group Control group Summary of results 1. Pain 2. Cervical spine ROM KT along posterior neck and across lower cervical spine (n = 21) KT applied with no tension in similar position (n = 20) Improvements to cervical ROM and pain in KT group were statistically but not clinically relevant Paoloni, et al, 2011 1. Pain 2. Disability 3. Muscle function (FR ability) KT along lumber erector spinae and midline (3 strips total) (n = 13) KT applied in same way + home exercises (n = 13) Immediate reduction in pain in CLBP (n = 39) Home exercises only (n = 13) Tsai et al, 2010 PF (n = 52) 1. Pain 2. Foot function 3. Thickness of plantar fascia in 2 positions Note: All participants taped initially for immediate results on pain and FR (n = 39) KT over gastrocnemius Daily physical therapy and plantar fascia only + daily physical therapy (n = 26) (ultrasound, TENS) (n = 26) all KT groups Improved FR in 17/39 initially Pain improved in all groups at end of trial Disability improved most in non-KT group FR most improved at end of trial in KT + Exercise group Immediate improvement in pain and foot function in KT group Reduction in plantar fascia thickness in KT group in 1 of 2 designated sites only Key: KT = Kinesiotaping ; PF = Plantar Fasciitis ; CLBP = Chronic Low Back Pain ; WAD = Whiplash Associated Disorder ; FR = Flexion-Relaxation Emergent Themes As described in the Methodology, a number of themes can be taken from the above results (Table 8). The papers identified a number of conditions that KT could potentially be used to treat and there were a number of recurring minor themes, namely the use of KT as a cost-effective alternative to traditional interventions such as ultrasound, TENS and home exercise and the efficacy of KT on muscle tissue and fascia in the immediate and short term. Table 8: Themes drawn from selected papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. Major Themes Minor Themes Kinesiotaping as a treatment for musculoskeletal pain, namely: Kinesiotaping as a cost-effective alternative to ultrasound, exercise therapy or TENS Patello-femoral pain Shoulder impingement Other conditions o Chronic low back pain o Whiplash affected disorder o Plantar fasciitis Kinesiotaping as a fast-acting/short-term treatment Effect of kinesiotaping on muscle tissue and fascia Discussion The purpose of this literature review was to identify evidence for the use of kinesiotape (KT) in the treatment of musculoskeletal conditions and its role in osteopathic practice. Nine papers satisfied inclusion and exclusion criteria, with significant variability in study design, methodology and quality (Table 9). All three papers addressing the use of KT in treating patello-femoral pain (Akbas et al, 2011; Aytar et al, 2011; Chen et al, 2008) hypothesised that pain is caused by maltracking of the patella, following imbalance between vastus medialis and vastus lateralis due to the Q angle (Levangie & Norkin, 2001) and taped accordingly (Figure 9). Figure 9: Taping protocols for Patello-Femoral Pain Syndrome a) Akbas et al 2011, b) Aytar et al 2011, c) Chen et al 2008 (not illustrated in paper) Despite similar hypotheses, heterogeneity of methodology across the three studies makes direct comparison difficult (Table 5). Both Akbas et al (2011) and Aytar et al (2011) were well-documented trials, with clearly presented results focussed on PFPS as the presenting condition. Unfortunately, differing control groups (sham taping and exercise/massage respectively) makes overall comparison inconclusive. Chen et al (2008) focussed on biomechanical effects of KT on PFPS sufferers, comparing its effects against sham taping, no taping and asymptomatic healthy participants. Although the results are presented in great detail, a poorly documented methodology, makes this study less meaningful to this review. None of these studies included a power calculation and featured small (n=31, 25, 22) study groups, though small groups can be expected from qualitative research (Aveyard, 2008, p. 100). Table 9: Methodological quality of selected papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. Study Akbas et al (2011) Aytar et al (2011) Chen et al (2008) GonzalezIglesias et al (2009) Hsu et al (2008) Key Strengths/Weaknesses Strengths: Inclusion/exclusion criteria clear and relevant Clear protocol of group allocation & randomisation Blinding of participants and examiners Outcomes measured are relevant & consistent Weaknesses: KT mixed with exercise rather than alone Study groups small with no power calculation Strengths: Inclusion/exclusion criteria clear and relevant Blinding of participants and examiners Sham KT identical in design/application Outcomes measured are relevant & consistent Weaknesses: Randomisation/allocation method unrecorded Study groups small with no power calculation Strengths: Sham KT identical in design/application Weaknesses: Inclusion/exclusion criteria undefined Blinding of participants only Mix of symptomatic and asymptomatic participants Results predominantly biomechanical Study groups small with no power calculation Strengths: Sham KT identical in design/application Blinding of participants and examiners Inclusion/exclusion criteria clear and relevant Results consistent, relevant and clearly presented Weaknesses: KT used in both groups Randomisation/allocation method unrecorded Results measured in first 24 hours only Study groups small with no power calculation Strengths: Sham KT identical in design/application Blinding of participants and examiners Inclusion/exclusion criteria clear and relevant Rating High High Low High Moderate Weaknesses: Extremely specific population studied Randomisation method unclear No assessment of pain or disability Study groups small with no power calculation Key: KT = Kinesiotaping Table 9 (cont): Methodological quality of selected papers investigating efficacy of kinesiotape in treatment of musculoskeletal conditions. Study Kaya et al (2010) Key Strengths/Weaknesses Strengths: Inclusion/exclusion criteria clearly defined Power calculation recorded and adequate group size recorded Results clearly presented Weaknesses: KT mixed with exercise rather than alone Allocation based on date of admission rather than randomised model Examiner not blinded Paoloni et Strengths: al (2011) Inclusion/exclusion criteria clearly defined Enrolment of subjects and progression of trial very well presented Weaknesses: Central hypothesis (FR) not commonly accepted as cause of CLBP Mixed intervention and assessment protocol Study groups small with no power calculation No assessment of speed of improvement, just overall figures at end of trial Thelen et al Strengths: (2008) Sham KT designed to blind participants effectively Blinding of participants and examiners Inclusion/exclusion criteria clearly defined Enrolment of subjects very well presented Randomisation method clear Power calculation included Weaknesses: Subjects recruited from military academy and all aged 18-24 Groups smaller than required Tsai et al Strengths: (2010) Randomisation method clear Blinding of participants and examiners Rating Moderate Moderate High High Inclusion/exclusion criteria clearly defined Testing method relevant and accurate Results clearly presented Weaknesses: Study groups small with no power calculation Key: KT = Kinesiotaping ; FR = Flexion/Relaxation ; CLBP = Chronic Low Back Pain Positive results in pain, soft tissue flexibility (Akbas et al 2001), muscle activation (Chen et al 2008) and strength (Aytar et al 2011) echo findings from trials featuring healthy individuals (Aktas & Baltaci, 2011; Słupik et al 2007; Vithoulkaa et al, 2010), suggesting that KT may be effective in the treatment of PFPS. In treating shoulder impingement (SI) Thelen et al (2008) and Kaya et al (2010) taped in a similar manner (Figure 10a, b) but comparison groups and study duration differed; Thelen at al (2008) compared with sham KT and measured outcomes after weeks one and two, whilst Kaya et al (2010) compared against ultrasound, TENS and heat packs and measured outcomes after day one, three and six. Thelen et al (2008) was the only SI study to include a power calculation but failed to provide enough participants (26 required in each group, 21 provided) to satisfy. Hsu et al (2009) featured a taping protocol quite different to the previous two trials (Figure 10c) and was peculiar in that it focussed on a small number (n=17) of baseball players only, a narrow population with specific loads on the shoulder complex. Figure 10: Kinesiotaping approaches to shoulder impingement. a) Thelen et al (2008), b) Kaya et al (2010), c) Hsu et al (2009) Figure 10 shows how the taping protocols differed and although Thelen at al (2008) and Kaya et al (2010) have similarities, there are still fundamental differences in KT approach, including lack of KT over the mid fibres of trapezius (10a) and KT over the lower fibres of trapezius only in Hsu et al (2009) (10c). As a result, the efficacy of KT in the treatment of shoulder impingement is not clearly identified by these three studies. Paolini et al (2011) addressed chronic lower back pain (CLBP), focusing on “Flexion-Relaxation” (FR) of the lumbar erector spinae. In healthy individuals, muscle activity is reduced after forward flexion whilst in CLBP sufferers it is hypothesised that these same muscles are held in a state of contraction. Featuring a complex model of three intervention groups with testing in two phases, the results are inconclusive for either KT or home exercise, with an immediate positive improvement in FR in 33% of participants being the most significant result. A study of healthy individuals (Yoshida & Kahanov, 2007) found positive results in increased forward flexion immediately after using KT to facilitate lumbar erector spinae. Although no assessment was made of pain and a direct connection between increased range of movement and reduced pain not possible from these results alone, when combined with the results from Paolini et al (2011) there is indication of how KT could be used in CLBP. Guidelines for the treatment of low back pain (Koes et al, 2006; UK BEAM Trial, 2004; NICE, 2009) advise remaining active and maintaining mobility, so KT could be used to increase range of movement and relieve muscle tension. As each of the remaining papers (Gonzalez-Iglesias et al 2009, Tsai et al 2010) looked at different conditions, with no additional studies to compare findings to, firm conclusions are difficult. A unique finding from Tsai et al (2010) was the effect of KT on fascia thickness, as measured by diagnostic ultrasound. Featuring one of the larger overall study groups (n=52), a mean reduction in the thickness of plantar fascia of over 16% at the site of calcaneal attachment was one of the clearest positive outcomes from any the studies. Kinesiotaping as a viable alternative Four of the identified studies (Akbas et al 2011, Kaya et al 2010, Paolini et al 2011, Tsai et al 2010) compared the action of therapeutic KT against manual therapy. Akbas et al (2011) found improvements in soft tissue flexibility appeared faster in the KT group, whilst a faster reduction in pain was noted by Kaya et al (2010), Paolini et al (2011) and Tsai et al (2010. In all studies KT was applied less frequently (typically every 3 days) than alternative treatment (daily in all but Paolini et al 2011, where exercise was three times a week). This suggests that KT achieves results faster than US, TENS or exercise and can be supplied less often with less specialist equipment. Limitations of studies assessing efficacy of kinesiotape One of the most important issues affecting the reliability of results from these trials is the manner in which the tape is applied. KT can be applied in a number of ways, at the discretion of the therapist. Although advantageous in the clinical setting, it makes direct comparison of trials difficult as the taping protocol may differ greatly. It is therefore difficult to categorically argue that KT does or does not work for a particular condition, as success or failure is due to the manner in which the tape is applied, as much as the tape itself. Clinical Implications and Relevance to Osteopathy The proposed mechanism of action of KT, the lifting of the epidermis to reduce compression of tissues and fluid beneath, directly follows one of the key osteopathic principles, the importance of fluid movement in the maintenance of health (Figure 11, #6). 1. The body is a unit 2. Structure and function are reciprocally interrelated 3. The body possesses self-regulatory mechanisms 4. The body has the inherent capacity to defend itself and repair itself 5. When normal adaptability is disrupted, or when environmental changes overcome the body's capacity for self-maintenance, disease may ensue 6. Movement of body fluids is essential to the maintenance of health 7. The nerves play a crucial part in controlling the fluids of the body 8. There are somatic components to disease that are not only manifestations of disease but also are factors that contribute to maintenance of the diseased state Figure 11: Osteopathic Principles (Sammut & Searle-Barnes, 1998) Further to this, the ability of KT to improve muscle firing (Chen et al, 2008, Hsu et al 2009) improve soft tissue flexibility and increase range of movement (Akbas et al 2011, Thelen et al 2008, GonzalezIglesias et al, 2009) suggests that it could be used to help improve the structure and function of the body, better equipping it to promote repair. Future treatment of chronic postural conditions could be influenced by the findings of Tsai et al (2010), which found measurable effects of KT on fascia thickness. Figure 12 shows a chronic, slouched posture commonly observed, the muscles held in a state of constant strain. Myers (2007, p18) describes how collagen fibres are laid down to support these muscles, creating an inelastic, fibrous network. This can be treated with manual therapy, home exercise and postural education but the addition of KT to reduce Figure 12: The effect of chronic postural adaptations on muscle and fascia (Myers, 2007) thickness of this tissue alongside these interventions has great potential for success. The very nature of KT means that application can be adapted for each individual, targeting specific tissues. This is particularly relevant to the osteopathic approach of treating each patient as an individual (DiGiovanna et al, 2005), suggesting it could work effectively alongside soft tissue massage, mobilisation or manipulation. Limitations of this review There were numerous limitations to the design of this review, influenced by resources available and the author’s experience. Due to the nature of this undergraduate study, only one researcher, relatively inexperienced in research methodology, performed all searches, inclusion/exclusion of papers and analysis of selected studies, allowing for individual bias (Kane, 2004). Although a systematic approach was adopted (Aveyard, 2008, p. 13) and care taken to search all appropriate databases with relevant search terms, the potential still exists for papers to be missed. No meta-analysis was performed due to heterogeneity of methodology but themes were identified and discussed. To strengthen the quality of this review, a second researcher could be used to ensure that searches are performed and recorded accurately and offer additional opinions relating to study selection and assessment. This additional resource could also aid thorough searching of online databases, grey literature, foreign language studies and relevant journals by hand. Conclusion This study identified nine randomised controlled trials assessing the efficacy of kinesiotape (KT) in the treatment of musculoskeletal pathology. One study (Tsai et al, 2010) found compelling evidence for the positive effect of KT on fascia thickness whilst four studies (Akbas et al 2011, Kaya et al 2010, Paolini et al 2011, Tsai et al 2010) found KT to be as effective as ultrasound, TENS and home exercise in improving pain and disability, when applied three times less frequently. Five papers (Akbas et al 2011, Kaya et al 2010, Thelan et al 2008, Paolini et al 2011, Tsai et al 2010) identified that KT provided faster improvements in pain and flexibility than control groups, although final outcomes were similar in all but one (Akbas et al 2011). Studies investigating effect on shoulder impingement and patello-femoral pain, found some positive results but heterogeneity of methodology makes it difficult to categorically confirm efficacy. Further research with consistent methodology is required. The identified positive effects of KT on soft tissue flexibility, fascia thickness, pain and disability indicate that KT can and should be used by osteopaths to treat both acute and chronic musculoskeletal presentations. Opportunities for future research The application of the tape is as important as the tape itself, so future studies should follow standard taping protocols and measure homogeneous outcomes to ensure that results can be combined and conclusions drawn. At present no such protocols exist, so this would need to be established before additional studies undertaken. Future studies should aim to improve methodological quality and provide larger sample sizes, at least large enough to satisfy power-calculated amounts. References Akbas, E., Atay, A., & Yuksel, I. (2011). The effects of additional kinesio taping over exercise in the treatment of patellofemoral pain syndrome. Acta Orthop Traumatol Turc , 45 (5), 335-341. 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