Table 1. Details of the randomized controlled intervention trials in which at least one arm involved wrist arthroscopy or shoulder arthroscopy (listed in alphabetical order of first author) Author (first) yr Country Diagnosis Intervention 1 N1 D/W Intervention 2 Randomization W/D method N2 Time of randomization Outcomes Blinding Wrist Kang 2008 USA Dorsal ganglion Leblebicioglu 2003 Turkey Kienbock’s disease Rocchi 2008 Italy Volar ganglion Varitimidis 2008 Greece Intra-articular distal radius fracture Archetti Netto 2012 Brazil Traumatic anterior instability + isolated Bankart lesion Barber 2012 USA, Canada Large rotator cuff tear Berth 2010 Germany Arthroscopic excision Open scaphocapitate fusion and lunate revascularization 41 31 8 13 Open excision Arthroscopic scaphocapitate fusion and NR capitate pole excision Open excision Arthroscopic and fluroscopic assisted reduction + external fixation and percutaneous pinning 25 2 Arthroscopic excision 25 20 Fluroscopic assisted reduction + external fixation and NR percutaneous pinning 8 Medical record Identifier 8 (odd/even) Last digit of Medical record NR (odd/even) Sealed 1 envelopes At presentation NR Recurrence, residual pain, complications Operative time, LOHS, time to fusion, ROM, grip, RTW ROM, grip, scar, pain, residual symptoms, recurrence NR Mayo wrist score, DASH (primary), clinical wrist instability, grip, ROM, radiographs NR At surgery DASH (primary), UCLA, Rowe, ROM NR ASES, UCLA, Constant, MRI, ROM, strength Assessor (radiologist) NR 20 Sealed NR envelopes 28 Computer; Sealed 3 envelopes 20 Sealed NR envelopes At surgery 21 NR Patient's option NR 14 Last digit social security number 2 (odd/even) NR 32 Sealed 3 envelopes NR NR NR Shoulder Arthroscopic repair Arthroscopic singlerow repair + acellular human dermal matrix augmentation 22 22 Bottoni 2002 USA Massive rotator cuff tear Acute, traumatic, first-time shoulder dislocations in young athletes Bottoni 2006 USA Recurrent anterior shoulder instability Arthroscopic stabilization 32 Brox 1993 Norway Impingement syndrome (stage II) Arthroscopic acromioplasty 45 Arthroscopic singlerow rotator cuff repair USA Full-thickness rotator cuff tear Distal clavicle osteolysis or posttraumatic acromioclavicular arthrosis without instability China Frozen shoulder Burks 2009 Charron 2007 Chen 2010 Australia Arthroscopic partial rotator cuff repair Arthroscopic stabilization 10 Arthroscopic distal clavicle resection with a direct approach Arthroscopic release of anterior capsular 21 20 19 42 5 Open repair Arthroscopic single row NR repair Arthroscopic debridement + subacromial NR decompression Nonoperative treatment (4 wks immobilization followed by supervised 1 rehabilitation program) 0 Open stabilization Supervised exercises; 13 Placebo laser Arthroscopic double-row 0 rotator cuff repair Arthroscopic distal clavicle resection with an indirect subacromial 1 approach Arthroscopic release 1 extended inferiorly and 50;30 20 19 32 8;4 NR Random number Generator; Sealed 0 envelopes Order of enrollment 3 (odd/even) Computer; 3 Sealed Constant, ROM, pain, DASH, ultrasound Recurrent instability, SANE, L'Insalata shoulder evaluation, satisfaction ROM, stability, SANE, SST, WOSI, UCLA, Rowe NR Mean 2 months before Neer shoulder score treatment (primary), pain At surgery At enrollment At surgery UCLA, MRI, ConstantMurley, WORC, SANE, ASES, ROM, strength NR NR Assessor (physiotherapist) Assessor Assessors (radiologist and examiner) ASES, ATH, time to full return to sports NR Patients and Constant, ROM Assessors structures De Carli 2012 Italy Idiopathic adhesive shoulder capsulitis Dezaly 2011 France Rotator cuff tear in the over-60s Elmlund 2009 Fabbriciani 2004 Sweden Italy Franceschi 2008 Italy Freedman 2007 USA Recurrent shoulder instability Traumatic anterior shoulder instability Rotator cuff tear and a type II SLAP lesion in the over-50s Refractory acromioclavicular joint pain Arthroscopy arthrolysis and shoulder manipulation Arthroscopic biceps acromioplastytenotomy and repair 0 NR 71 Arthroscopic biceps 3?* acromioplasty-tenotomy 71 12?* NR 30 Open distal clavicle excision Arthroscopic rotator cuff repair + subacromial decompression Arthroscopic singlerow rotator cuff repair Gumina 2012 Italy Large full-thickness posterosuperior rotator cuff tear Haahr 2005 Denmark Subacromial impingement Arthroscopic repair with platelet-leukocyte membrane Arthroscopic subacromial decompression Henkus 2009 Netherlands Primary subacromial impingement without rotator cuff rupture Arthroscopic subacromial bursectomy Hiemstra 2008 Canada Husby 2003 Norway Shoulder instability Impingement syndrome (Neer grade II) Kasten 2011 Germany Ketola 2009 Finland Supraspinatus tendon rupture Shoulder impingement syndrome 21 Arthroscopic repair Italy USA Glenohumeral steroid 2 injections 20 Arthroscopic repair of both lesions envelopes 25 Arthroscopic reconstruction with polygluconate-B polymer Full-thickness rotator cuff tear + type 2 acromion Full-thickness rotator cuff tear Gartsman 2004 Grasso 2009 posteriorly 31 9 47 40 Arthroscopic reconstruction with polyL-lactic acid polymer tack 4 implants NR Open repair Arthroscopic rotator cuff tear repair without repair of the SLAP II lesion but with tenotomy of the long 2 head of the biceps Arthroscopic distal 1 clavicle excision Arthroscopic rotator cuff repair without subacromial NR decompression Arthroscopic double-row 3 rotator cuff repair At surgery Constant, Rowe NR Random number table; Sealed 5 envelopes At surgery UCLA, ROM NR 1 NR NR Pain VAS (primary). modified ASES, SF-36 NR 30 NR Computer 8 46 Random number NR table 40 1 Arthroscopic repair 40 45 45 27 4 Physiotherapy Debridement of subacromial bursa + arthroscopic 1 acromioplasty 30 5 Computer Randomization list; Sealed 3 envelopes Computer; Sealed 2 envelopes Automatically generated randomization 0 code Open stabilization Arthroscopic subacromial decompression 24 0 Arthroscopic stabilization 24 0 Computer 20 Open subacromial 5 decompression 19 Arthroscopic repair 17 Supervised exercise 70 3 Mini-open technique Arthroscopic acromioplasty + 4 supervised exercise 40 17 70 NR Just before surgery Sealed 3 envelopes Sealed 0 envelopes Order of enrollment 1 (first 17/ next 17) Computer; Sealed 2 envelopes Day before surgery ROM, ASES, UCLA, SST, Constant-Murley Constant, ultrasound tendon healing Radiographs, CRP, Constant, Rowe, apprehension test, strength, ROM, recurrence of instability 20 32 NR At surgery NR Assessor (radiologist) At surgery ASES DASH, Constant, strength 3 days before surgery Constant, MRI (primary), SST Assessors NR Constant, pain VAS, ROM, strength, ADL NR NR Constant, SST , pain VAS, functional impairment VAS Assessor and group 1 patients NR At surgery NR NR Strength (primary), ASES, ROM UCLA, pain VAS, satisfaction VAS, strength, ROM NSAID use, pain, Constant-Murley, ASES, MRI Pain VAS, ROM, strength (primary), cost-effectiveness Patients NR Assessor Assessor Assessor (radiologist) Assessor (physiotherapist) Kim 2011 Korea Rotator cuff tear + asymptomatic acromioclavicular arthritis Kirkley 1999 Canada First traumatic anterior dislocation Koh 2011 South Korea Rotator cuff tear Lindh 1993 Sweden Shoulder impingement Arthroscopic singlerow repair Arthroscopic subacromial decompression Ma 2012 Taiwan Full-thickness rotator cuff tear Arthroscopic singlerow repair MacDonald 2011 Canada Full-thickness rotator cuff tear Magnusson 2006 Sweden Post-traumatic shoulder instability Milano 2007 Italy Full-thickness rotator cuff tear Arthroscopic repair + acromioplasty Arthroscopic Bankart reconstruction with polygluconate copolymer Arthroscopic repair + subacromial decompression Milano 2010 Italy Recurrent traumatic anterior shoulder instability Milano 2010 Italy Full-thickness rotator cuff tear Mohtadi 2008 Canada Full-thickness rotator cuff tear Arthroscopic distal clavicle resection with rotator cuff repair Immediate arthroscopic stabilization Arthroscopic repair with metal suture anchor Arthroscopic repair with metal suture anchor Monteiro 2008 Brazil Oh 2011 South Korea Randelli 2011 Italy Open repair Arthroscopic repair with anchors loaded Traumatic anterior with absorbable shoulder instability sutures Partial- or fullArthroscopic repair + thickness rotator cuff HA/carboxymethylated tear cellulose injection Arthroscopic repair + Complete rotator cuff autologous platelet tear rich plasma UK First-time traumatic anterior dislocation Robinson 2008 Arthroscopic examination and lavage 31 Arthroscopic rotator cuff 2 repair 52 Random number 4 table NR 19 Immobilization and 0 rehabilitation 21 2 NR NR 37 Arthroscopic double-row 6 repair 34 3 Computer At surgery 10 0 Open acromioplasty 10 NR 32 Arthroscopic double-row 5 repair 32 ASES, UCLA, pain, AC joint tenderness, cross body adduction test NR WOSI, ROM, redislocation Pain VAS, Constant, ASES, UCLA, re-tear, MRI Assessor Assessors (radiologist and examiner) At surgery Osteophyte recurrence, ROM, UCLA NR UCLA, ASES, strength, magnetic resonance arthrography NR At surgery WORC (primary), ASES, revision Patients and Assessor 45 20 9 Arthroscopic repair Arthroscopic Bankart reconstruction with selfreinforced poly-L-lactic 0 acid polymer 0 NR Computer; Sealed 6 envelopes Computer; Sealed 9 envelopes 20 Sealed 0 envelopes Just before surgery Strength, ROM, Rowe, Constant, stability, radiography Assessor (radiologist) 40 3 Arthroscopic repair 40 At surgery Constant, DASH NR At surgery DASH (primary),,Rowe, Constant, recurrence Assessor 36 6 Computer Random sequence generator; Sealed 5 envelopes Random sequence 6 generator Computer; Sealed 5 envelopes 25 Sealed 1 envelopes 41 37 Arthroscopic repair with biodegradable suture 3 anchor Arthroscopic repair with biodegradable suture 3 anchor Arthroscopic acromioplasty with mini8 open repair 25 Arthroscopic repair with anchors loaded with 4 nonabsorbable sutures 39 55 39 55 40 NR Arthroscopic repair 40 26 4 Arthroscopic repair 27 45 Arthroscopic examination 3 and Bankart lesion repair 43 NR Computer Computer; Sealed 4 envelopes Computer; weighted 1 minimization At surgery NR NR NR At surgery NR DASH, Constant RC-QOL (primary), ASES, SRQ, FSET, ROM, strength Assessor Rowe, ASOSS Pain VAS, PROM, ASES, ultrasonography, CTA Pain VAS, SST, UCLA, Constant, strength, MRI Recurrence, functional scores, DASH, patient satisfaction, SF-36, WOSI, ROM, cost Assessor Assessor Injection and Assessor Assessors (radiologist and examiner) Patients and Assessor (physiotherapist) Rodeo 2012 USA Full-thickness rotator cuff tear Arthroscopic repair + platelet-rich fibrin matrix Sachs 1994 USA Impingement syndrome (stage II) Arthroscopic acromioplasty Shin 2012 South Korea Shin 2012 South Korea Small-medium rotator cuff tear Partial-thickness articular-sided rotator cuff tear Arthroscopic repair + acromioplasty Arthroscopic repair with transtendon technique Silberberg 2011 Spain Spangehl 2002 Canada Sperber 2001 Sweden Syed 2010 USA Tan 2006 UK Taverna 2007 Italy Wintzell 1996 Sweden 40 5 Arthroscopic repair 39 Sealed 7 envelopes 22 3 Open acromioplasty 22 0 NR 75 15 NR 75 15 Arthroscopic repair At surgery Healing on ultrasound (primary), ASES, L'Insalata, manual muscle testing Patients and Assessor NR Pain, function, ROM, strength, RTA, LOHS NR VAS, UCLA, ASES, Constant, MRI, ROM Pain and satisfaction VAS, ASES, Constant, MRI, ROM NR Assessors (radiologist and examiner) Before surgery 24 Arthroscopic repair with 0 full-thickness conversion 24 0 Computer At surgery Isolated type II SLAP Arthroscopic repair lesion with vertical suture 15 Arthroscopic repair with 0 horizontal suture 17 0 Minimization At surgery Impingement syndrome Arthroscopic acromioplasty 32 ?/25* Open acromioplasty 30 Traumatic anterior shoulder instability Soft tissue fluid retention after shoulder arthroscopy Arthroscopic stabilization 30 NR Open stabilization 26 Sealed NR envelopes 14 Sealed 0 envelopes NR 65 Sealed 4 envelopes At surgery Recurrent traumatic anterior instability Chronic supraspinatus tendinosis Acute traumatic primary anterior dislocation Fenestrated outflow cannula Arthroscopic Bankart repair with nonabsorbable anchor Arthroscopic subacromial decompression Arthroscopic lavage 14 ?/25* NR NR At surgery 65 0 Conventional cannula Arthroscopic Bankart repair with absorbable 2 anchor 30 Radiofrequency-based 0 plasma microtenotomy 30 Sealed 0 envelopes Just before surgery 15 0 Conservative treatment 15 0 NR NR Pain and instability VAS, ASES, ROM Pain and function VAS (primary), UCLA, satisfaction, strength Recurrence, ROM, apprehension sign, relocation test, Constant, Rowe Fluid weight gain OISS, pain and instability VAS, SF-12, recurrence Pain VAS, Constant, ASES, UCLA, SF-36 Recurrence, apprehension test, ROM, Lysholm score Assessor Assessor NR Patients Patients and Assessors Patients and Assessor (physician) Assessor Abbreviations in alphabetical order: ADL – Activities of Daily Living; ASES – American Shoulder and Elbow Surgeons shoulder score; ASOSS – Athletic Shoulder Outcome Scoring System; ATH – Athletic Shoulder Scoring System score; Constant – Constant shoulder score; CRP – C-Reactive Protein; CTA – Computed Tomography Arthrography; DASH – Disabilities of the Arm, Shoulder and Hand score; D/W – dropouts/withdrawals; FSET – Functional Shoulder Elevation Test; LOHS – length of hospital stay; MRI – Magnetic Resonance Imaging; N – number of patients randomized; NR – not reported; OISS – Oxford Instability Shoulder Score; PROM – Passive Range Of Motion; RC-QOL – Rotator Cuff Quality Of Life score; ROM – Range Of Motion; Rowe – Rowe shoulder score; RTA – return to activities; RTW – return to work; SANE – Single Assessment Numeric Evaluation score; SF-12 – Short Form 12 survey; SF-36 – Short Form 36 survey; SRQ – Shoulder Rating Questionnaire; SST – Simple Shoulder Test; UCLA – University of California-Los Angeles shoulder rating scale; VAS – Visual Analogue Scale; WORC – Western Ontario Rotator Cuff index; WOSI – Western Ontario Shoulder Instability index *Dropouts/withdrawals were mentioned but the exact number in each group was not clear in the article