Closed Fractures of the Tibial Diaphysis David L. Rothberg, MD Erik N. Kubiak, MD University of Utah Original Authors: Robert V. Cantu, MD and David Templeman, MD; March 2004 Interim Authors: David Templeman and Darin Friess, MD; Revised June 2006 New Authors: David L. Rothberg, MD & Erik N. Kubiak, MD; Revised June 2010 Tibia Fractures Most common long bone fracture 492,000 fractures yearly Average 7.4 day hospital stay 100,000 non-unions per year History & Physical Low Energy – Minimal soft-tissue injury – Less complicated fracture pattern and management decisions 76.5% closed 53.5% mild soft-tissue energy History & Physical High Energy – High incidence of neurovascular energy and open injury – Low threshold for compartment syndrome – Complete soft-tissue injury may not declare itself for several days Radiographic Evaluation Full length AP and Lateral Views – Check joint above & below Oblique views may be helpful in followup to assess healing Injuries Associated 30% of patients will have multiple injuries – Ipsilateral Fibula Fracture – Foot & Ankle injury – Syndesmotic Injury – Ligamentous knee injuries Injuries Associated Ipsilateral Femur Fx – “Floating Knee” Neurovascular Injury – More Common In: High Energy Proximal Fracture Floating Knee Knee Dislocation Classification Numerous systems Important variables – Fracture Pattern – Location – Comminution – Associated Fibula Fx – Degree of soft-tissue injury OTA Classification Follows Johner & Wruh system Describes relationship between fracture pattern & mechanism Comminution is prognostic for time to union Henley’s Classification Applies Winquist & Hansen Femur classification to fractures of the Tibia Tscherne Classification of Soft-Tissue Injury • Grade 0 • negligible soft tissue injury • Grade 1 • superficial abrasion or contusion • Grade 2 • deep contusion from direct trauma • Grade 3 • Extensive contusion and crush injury with possible severe muscle injury, compartment syndrome Compartment Syndrome Incidence: – 5-15% History – High-Energy – Crush Exam – 4 Compartments – 6 P’s Pain Pain with passive stretch Parasthesias Pulsless Pallor Paralysis Compartment Anatomy Anterior – Deep Peroneal N. Lateral – Sup. Peroneal N. Deep Post. – Tibial N. Sup. Post. – Sural N. Anterior Compartment • • • Action • Ankle dorsiflexion Muscles • Tib. Ant. • EDL • EHL • Peroneus Tertius Vessels • • Anterior Tibial A./V. Nerves • Deep Peroneal N.. 1st webspace sensation Lateral Compartment • Action • Foot Eversion • Muscles • Peroneus Brevis & Longus • Nerves • Superficial Peroneal N. • Dorsal foot sensation Deep Posterior • Actions • Ankle plantarflexion • Foot inversion • Muscles • FDL • FHL • Tib. Post. • Vessels • Post Tibial A./V. • Peroneal A. • Nerve • Tibial N. Plantar foot sensation Superficial Posterior • Action • Ankle Plantarflexion • Muslces • • • • • Gastrocnemius Soleus Popliteus Plantaris Vessels • Greater and Lesser Saphenous V. • Nerve • Sural N. Lateral heel sensation Compartment Syndrome Remains a Clinical Diagnosis Pressure Measurements May be helpful in borderline cases – Basic Science Muscle ischemia present at 20 mmHg below DBP and 30 mmHg below MAP Various Thresholds – P = 30 mmHg – P = 45 mmHg – Whiteside’s Theory ∆ P = DBP – CP = < 30 mmHg Pressures Not Uniform Highest at Fracture Site Highest Pressures in: – Deep Posterior – Anterior Heckman JBJS ’76 Clinical Monitoring Close Observation – Repeat Exams – Repeat Pressure Measurements Indwelling Monitors – Reserved for intubated patient with high suspicion Goals of Fasciotomy Decompress the compartment – Minimize further soft- tissue damage Single vs. Two incisions – Go long No increased morbidity No difference in longterm outcome Plan for fracture fixation Plan for wound closure Coordinate with location of future incisions and/or internal fixation Closed Tibial Shaft Fracture Broad Spectrum of Injures w/ many treatments Closed Management Intramedullary Nails Plates External Fixation Non-Operative Treatment Indications Minimal soft tissue damage Non-intact fibula Stable fracture pattern Higher rate of nonunion & varus with intact fibula < 5° varus/valgus < 10° pro/recurvatum < 1 cm shortening Ability to bear weight in cast or fx brace – Requires frequent follow-up Fracture Brace Closed Functional Treatment – – 1,000 Tibial Fractures 60% Lost to F/U Fracture Characteristics – All < 1.5cm shortening – Non with intact fibula – Only 5% more than 8° varus Treatment Course – Average 3.7 wks in long leg cast – Transition to Function Fracture Brace • Sarmiento JBJS ‘84 Sarmiento Union Rate – 98.5% Time to Union – 18.1 weeks Shortening – <1.4% Initial Shortening = Final Shortnening Natural History Long-term angular deformities – Well tolerated without associated knee or ankle arthrosis – Kristensen All patients >10 degree deformity No radiographic Ankle arthrosis – Merchant & Dietz 22 pt F/U: 20-29 yrs 37 pt F/U: 29 yrs 76% of Ankles had G/E radiographic results 92% of Knees had G/E radiographic results Post Tibia Fracture Ankle Motion 25% Post Tibia Fracture will lose 25% of Ankle ROM Surgical Indications Patient Characteristics – Obesity – Poor compliance with non- operative management – Need for early mobility Injury Characteristics – – – – – – High Energy Moderate soft-tissue injury Open Fracture Compartment Syndrome Ipsilateral Femur Fx Vascular Injury Fracture Characteristics – – – – – – – Meta-Diaphyseal location Oblique fracture pattern Coronal Angulation > 5° Sagittal Angulation > 10° Rotation > 5° Shortening > 1cm Comminution > 50% cortical circumference – Intact fibula Surgical Options • Intramedullary Nail • ORIF with Plate • External Fixation • Combination of fixation Advantage of IM Nail Less malunion Early weight-bearing Early motion Early WB (load sharing) Patient satisfaction L Bone, JBJS Cost – Less expensive to society when compared to casting – Busse Acta Ortho ‘05 Disadvantages of IM Nail Anterior knee pain 2/3, improve w/in year • Risk of infection Increased hardware failure with unreamed nails Thermal Necrosis Medial HW prominence IM Nails PRCT 62 pts – If displacement >50% angulation >10° – Nails superior to cast treatment Hooper JBJS-B ‘91 IM Nails – Bone et.al. Retrospective review 99 patients Cast Time to union 26 wks SF-36 74 Knee score 89 Ankle score 84 Nail 18 wks 85 96 97 Bone JBJS ‘97 Reamed vs. Nonreamed Nails Reamings (osteogenic) Larger Nails (& locking bolts) – Hardware failure rare w/ newer nail designs Damage to endosteal blood supply? – Clinically proven safe even in open fx Forster Injury ‘05 Bhandari JOT ‘00 Reamed vs. Nonreamed Nails # pts. Nonunion Malunion Broken Bolts Reamed 73 4% 4% 3% Non-Reamed 63 11% 3% 16% Blachut JBJS ‘97 Time to Union 16.7 wks 25.7 wks Larsen JOT ‘04 IM Nails – Interlocking Bolts Loss of alignment w/o interlocking Spiral Transverse Metaphyseal 7/22 0/27 7/28 Templeman CORR ‘97 Complications Infection Union Knee Pain – w/ kneeling – w/ running – at rest 1-5% >90% 56% 90% 56% 33% Court-Brown JOT ‘96 Knee Pain after IMN Incidence – Varied in lit. 10-86% Attributed to: – – – – – Skin Incision Approach Insertion Site Quad weakness Nail Prominence Removal – 27% resolved – 69% marked improvement – 3% worse Court-Brown JOT ‘96 Neurologic Complications 63 pts – compared types of anesthesia – Epidural Anesthesia 4.1 x greater risk of neurologic injury – Illustrates need to monitor post-op exam • Iaquinto Am J Orth ‘97 Expanded Indications Proximal 1/3 fractures Beware Valgus and Procurvatum Distal 1/3 fractures Beware Varus or valgus Beware of intraarticular extension Proximal Tibia Fracture Entry site is critical Reference – Lateral Tibial Spine Too Low! Procurvatum Too Medial! Valgus Semiextended Position Neutralize quadriceps pull on proximal fragment Medial parapatellar approach – subluxate patella laterally Use handheld awls to gently ream through the trochlear groove Tornetta CORR ‘96 Hyperextended position Pulls patella proximally to allow straight starting angle Universal distractor Beuhler JOT ‘97 Blocking (Poller) Screws Functionally narrows IM canal – Increases strength and rigidity of fixation – Place on concave side of deformity 21 patients – All healed within 3-12 months – Mean alignment 1° valgus, 2° Krettek JBJS ‘99 procurvatum Technique Screws placed on concave side of deformity Proximal or distal fractures Distal Tibial Fractures Reduction before reaming Distractor Fibula plate/nail Joy Stick Calcaneal Traction Universal Distractor Reduction Beuhler JOT ‘97 Plate Fibula Distal Tibial Joystick Outcomes of IM Nailing • • • • • 859 closed tibia fractures 92.5% union rate 18.5 weeks to union 1.9% infection rate 4.4% aseptic nonunion • “Reamed intramedullary nailing will probably continue to be the best method of treating tibial diaphyseal fractures.” Court-Brown JOT ‘04 Plating of Tibial Fractures • 3.5 mm or Narrow 4.5mm DCP plate can be used for shaft fractures • Newer periarticular plates available for metaphyseal fractures Subcutaneous Tibial Plating • Newer alternative is use of limited incisions and subcutaneous plating- requires indirect reduction of fracture and hybrid screw fixation options Advantages of Plating Anatomic reduction usually obtained In low energy fractures – 97% G/E results reported • Ruedi Injury Disadvantages of Plating • Increased risk of infection and soft tissue problems, especially in high energy fractures • Higher rate hardware failure than IM nail • Delayed WB (load bearing) Johner CORR ‘83 External Fixation • Generally reserved for open tibia fractures or periarticular fractures AO Technique of Tibia Plating • Anterior longitudinal incision • • 1 cm lateral to tibial crest Maintain AT paratenon and periosteum • Plate on medial border of tibia • 3.5 mm or 4.5mm LCDCP plate secured to bone on distal fragment • Butterfly fragment can be secured with interfragmentary screw • The AO articulating tension device can be secured to proximal part of plate to aid reduction • With fracture reduced, screws placed through plate on either side of fracture Technique of External Fixation • Unilateral frame with half pins • 5mm half pins • near-near and far-far • Stay out of zone of injury • Pre-drilling of pins recommended • Fracture held reduced while clamps and connecting bar applied Advantages of External Fixator • Can be applied quickly in polytrauma patient • Allows easy monitoring of soft tissues and compartments • Modifiable • No long term deep HW Outcomes of External Fixation 95% union rate for group of closed and open tibia fractures 20% malunion rate Loss of reduction associated with removing frame prior to union Risk of pin track infection Anderson CORR ‘74 Edge JBJS ‘81 Conclusions Common fracture w/ several treatment options Closed stable fx can be treated in a cast Unstable fx often best treated by intramedullary nail Acknowledgments 1st Edition lecture R. Cantu M.D. Cases Courtesy R. Winquist M.D. E. Kubiak M.D. If you would like to volunteer as an author for the Resident Slide Project or recommend updates to any of the following slides, please send an e-mail to ota@aaos.org E-mail OTA about Questions/Comments Return to Lower Extremity Index