Injuries to the lower extremity II :Injury to lower extremity Injuries to the lower extremity II Aree Tanavalee MD Associate Professor Department of Orthopaedics Faculty of Medicine Chulalongkorn University


Topics :Injury to lower extremity Topics Fracture of the shaft of the femur Fractures around the knee Knee dislocation and fracture dislocation Fractures of tibia and fibular Fractures around the ankle Fracture and fracture dislocation of the foot


Common symptoms and signs of fractures :Injury to lower extremity Common symptoms and signs of fractures Pain Deformity Shortening Swelling Ecchymosed Loss of function Open injury Gross finding of fractures


Radiographic evaluation for fractures :Injury to lower extremity Radiographic evaluation for fractures At least, 2 different planes of Fx site Includes joint above and below Some types of Fx, special views Sometimes, 2 different times Sometimes, calls second opinion


Complications of fractures :Injury to lower extremity Complications of fractures General Delayed union Nonunion Malunion Shortening Infection Severe Neurovascular injuries Compartment syndrome Fat embolism Adult respiratory distress syndrome (ARDS)


Fat embolism :Injury to lower extremity Fat embolism Common in Fx of long bone and pelvis Multiple Fxs >> single Fx Respiratory insufficiency Usually manifests within 48 hr Clinical Fever Tachepnea Tachycardia Alters consciousness Treatment Respiratory support Early Fx stabilization


Compartment syndrome :Injury to lower extremity Compartment syndrome Impaired circulation and function of tissues within a closed space Most common: closed Fx in Leg, forearm Irreversible damage to muscles if > 6 hr Irreversible damage to nerves if > 12 hr Clinical Pain out of proportion, pain with passive ROM Discolation Paresthesia Paralysis Pulseless


Compartment syndrome :Injury to lower extremity Compartment syndrome Risks injuries Fx tibia Knee dislocation Crush injury: leg, foot Prolong Fx with vascular compromised Treatment Fasciotomy


Type of fractures :Injury to lower extremity Type of fractures Closed No wound connects to Fx site Open Grade 1 Simple fracture Wound less than 1 cm Grade 2 Moderate-severe fracture Wound bet 2-10 cm Grade 3 Severe fracture Wound > 10 cm Loss of skin coverage Vascular compromised


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur General The strongest and longest bone Canal widening: proximal and distal Gluteal and psoas muscles Proximal third: flex, external rotate, abduct Adductors Varus deformity Gastrocnemius muscles Supracondylar: distal part: posterior angulation


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Mechanisms of injury General Major trauma High-energy injury Pathological Lesser degree of trauma Often: metaphysis-shaft junction Common mechanisms of Fx Bending load >> transverse Fx


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Type of fractures (according to geometry of Fx line) Transverse Oblique (angle> 30 deg to transverse line) Spiral Segmental Comminution


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Symptoms and signs Common S&S of fracture Radiographic evaluation Standard: AP, lateral, CXR Including: hip and knee joint Findings: fracture


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Initial evaluation and management Live support: as major traumatized patient Assessment of associated orthopaedic injuries Pelvic fracture Hip fracture Ligamentous injury: around the knee Neurovascular injury Immobilization


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Complications Commom Fx complications Fat embolism ARDS (multiple Fx)


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Treatment Nonoperative Traction Cast brace


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Treatment Operative Plating Intramedullary nailing External fixator


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Traction Commonly used in the past Now, indicated in Fracture in children Temporary purpose Surgery is limited Type Skeleton Proximal tibia Distal femur Skin


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Traction Disadvantages Limited rotational control of fracture Limb-length discrepancy Loss of range of motion (ROM) Prolonged hospitalization Pin tract infection


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Cast brace Provides external support effect Permits progressive weight bearing Prerequisites Good reduction Traction until pain swelling have subsided Indicated in Distal third fracture


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Cast brace Disadvantages Limb-length discrepancy Varus angulation Limb-length discrepancy Limited area of usage


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Operative treatment Immediate fracture stability More anatomical reduction Early ambulation and ROM Less hospitalization


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Plating No need for special instruments Favorable results Ipsilateral neck-shaft fracture (same side) Disadvantages Extensive tissue exposure Higher complications than nailing


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Intramedullary nailing Treatment of choice Load-sharing implant Predictable shaft alignment Early recovery Type Open nailing Closed nailing


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Intramedullary nailing Closed nailing Interlocking nailing Less invasive Minimal surgical surgical scar Rapid fracture healing


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur External fixator Open fracture: need wound care Severe comminution Marked contaminated wound Temporary device


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Disadvantages of operative treatment Infection Nonunion Delayed union Loss of fixation Others surgical complications


Fracture of the shaft of the femur :Injury to lower extremity Fracture of the shaft of the femur Postoperative rehabilitation Early mobilization Muscle activity: following stability Progressive weight bearing: stable Delayed weight bearing: less stability, proximal or distal fracture


Fractures around the knee :Injury to lower extremity Fractures around the knee Fracture of the distal femur Fractures of the tibial plateau Fractures of the tibial spine and intercondylar eminence Fracture of the patella


Fracture of the distal femur :Injury to lower extremity Fracture of the distal femur General Supracondylar area 5 cm above the flare of metaphysis Intercondylar area Require careful neurovascular assessment Distal part: posterior angulation Joint Tibiofemoral joint (TF) Patellofemoral joint (PF)


Fracture of the distal femur :Injury to lower extremity Fracture of the distal femur Mechanisms of injuries High energy trauma in young patients Low energy trauma in the elderly Symptoms and signs Pain around the knee Swelling around the knee Tenderness over the fracture site Radiographic evaluation Usually standard x-ray views


Fracture of the distal femur :Injury to lower extremity Fracture of the distal femur Treatment Goal: restore joint surface and alignment Nonoperative Nondisplaced Traction 4-6 wk Cast brace with NWB and early ROM Operative Significant displaced Implant Condylar blade plate Condylar sliding nail-plate Intramedullary nail


Slide 33:Injury to lower extremity


Fractures of the tibial plateau :Injury to lower extremity Fractures of the tibial plateau General Concomitant ligament injuries Depression and displacement Mechanisms Varus or valgus force with axial loading Symptoms and signs Pain around the knee Swelling around the knee Tenderness over the fracture site Valgus or varus deformity


Fractures of the tibial plateau :Injury to lower extremity Fractures of the tibial plateau Nonoperative Long leg cast (LLC) Brace with NWB and early ROM Traction Operative Screw or pin Plate and screws Rehabilitation Non weight bearing 6-8 weeks Partial weight bearing until 12 weeks Full weight bearing after 12 weeks


Slide 36:Injury to lower extremity


Fractures of the tibial plateau :Injury to lower extremity Fractures of the tibial plateau Complications Common Fx complications Peroneal nerve injury Popliteal artery injury Compartment syndrome Associate injuries Meniscal injury 15% Cruciate ligament and collateral ligament injuries 22%


Fractures of the tibial spine and intercondylar eminence :Injury to lower extremity Fractures of the tibial spine and intercondylar eminence Mechanism of injury: tibial spine Knee twisting Mechanism of injury: intercondylar eminence Hyperflexion Hyperextension Valgus-varus force


Fractures of the tibial spine and intercondylar eminence :Injury to lower extremity Fractures of the tibial spine and intercondylar eminence Symptoms and signs Pain and swelling of the knee A block to full extension Treatment Nonoperative Most fractures Long leg cast in full extension 4-6 wk Operative Arthrotomy and screw fixation Arthroscopy and screw fixation Complication Fragment becomes a loose body


Fracture of the patella :Injury to lower extremity Fracture of the patella General The largest sesamoid bone Accessory ossification center Superolateral corner Named “bipatite patetta” Increases the extensor mechanism Protect the femoral condyles Forces across PF joint Daily activity: >3 times body weight Stair climbing and deep squatting: >7 times body weight


Fracture of the patella :Injury to lower extremity Fracture of the patella Mechanisms of injury Direct injuries: direct force Pattern:Comminuted Usually minimal displacement Indirect injuries: muscle forces Pattern:Transverse Combined injuries Pattern:Comminuted with displaced Symptoms and signs Pain and tenderness at the anterior of the knee Skin contusion: direct injuries Ability to extend the knee Depends on the continuity of the extensor mechanism


Fracture of the patella :Injury to lower extremity Fracture of the patella Treatment Nonoperative Within 2-3 mm displacement or stepping Cylinder cast for 4-6 wk Operative More than 2-3 mm displacement or stepping ORIF Circlage wiring Tension band wiring Patellectomy


Slide 43:Injury to lower extremity


Slide 44:Injury to lower extremity


Fracture of the patella :Injury to lower extremity Fracture of the patella Complications Common Fx complications Results after treatment Late OA change of the PF joint Painful retained hardware


Knee dislocation and fracture dislocation :Injury to lower extremity Knee dislocation and fracture dislocation Knee dislocation Patella dislocation Fracture dislocation


Knee dislocation :Injury to lower extremity Knee dislocation Description Position of the distal relates to the proximal Type of dislocation Anterior Posterior Medial Lateral Rotatory


Knee dislocation :Injury to lower extremity Knee dislocation Anterior Hyperextension injury Injury to PCL, ACL and popliteal vessels Common Posterior Common Medial Varus injury Injury to lateral structures


Knee dislocation :Injury to lower extremity Knee dislocation Lateral Valgus injury Injury to medial structures, cruciate ligaments Rotatory Posterolateral Often associate with peroneal nerve injury


Knee dislocation :Injury to lower extremity Knee dislocation Symptoms and signs Gross distortion of the knee Instability after reduction May have neurological deficit (35% of cases) Most common: common peroneal nerve May have vascular compromise Most common: popliteal artery


Knee dislocation :Injury to lower extremity Knee dislocation Treatment Principle Operative better than conservative Emergency vascular assessment Torn; vascular repair or graft Repairs ligament if possible Nerve assessment Torn: repair


Knee dislocation :Injury to lower extremity Knee dislocation Postoperative care Establishes ROM as early as possible At 4-6 wk: begins muscle strengthening Prognosis Depends on the extent of neurovascular injury


Patellar dislocation :Injury to lower extremity Patellar dislocation General Common in female Symptoms and signs Pain Distorted knee anatomy Limited ROM in flexed position Treatment Closed reduction (CR) Cylinder cast 4-6 wk Vastus medialis strengthening


Fracture dislocation around the knee :Injury to lower extremity Fracture dislocation around the knee General Combination of fractures and dislocation Symptoms and signs The same as major fracture around the knee Distorted knee anatomy Treatment immediate CR and immobilization Definite fracture treatment


Fractures of tibia and fibular :Injury to lower extremity Fractures of tibia and fibular General Anterior compartment Ankle and foot dorsiflexion Deep peroneal N Lateral compartment Foot plantaflexion and eversion Sup peroneal N Superficial posterior compartment Foot plantaflexion Deep posterior compartment Foot plantaflexion and inversion Posterior tibial N Posterior tibial vessels


Fractures of the tibia :Injury to lower extremity Fractures of the tibia Mechanism of injury of tibial shaft Fx Direct Indirect Penetrating Symptoms and signs of tibial shaft Fx Usually obvious deformed leg Pain Swelling Associated neurovascular injuries


Fractures of the tibia :Injury to lower extremity Fractures of the tibia Treatment of tibial shaft Fx Nonoperative Criteria Angulation < 10 deg Rotation < 10 deg Shortening <1 cm Apposition 50% Closed reduction Long leg cast At 4 wk: progressive WB At12 wk: full WB


Fractures of the tibia :Injury to lower extremity Fractures of the tibia Treatment of tibial shaft Fx Operative Indications Failed nonoperative Multiple Fx Associated vascular problems Type External fixator Plate and screws Intramedullary nail


Fractures of the tibia :Injury to lower extremity Fractures of the tibia Complications Common Fx complications Vascular injury Compartment syndrome Nerve injury


Fractures of the fibular :Injury to lower extremity Fractures of the fibular General Most are associated with fx of the tibia Isolate fx results from direct injury Local signs and symptoms Difficulty in walking Treatment Mild: elastic bandage support Mod to sev: SLC or brace for pain relief Ambulation Progressive weight bearing as possible Remove cast within 6 wk


Fractures around the ankle :Injury to lower extremity Fractures around the ankle Fracture of the tibial plafond Ankle fractures Ankle dislocation and fracture dislocation


Fracture of the tibial plafond :Injury to lower extremity Fracture of the tibial plafond Definition Fx of the distal tibia extending into the ankle May be called “pilon fracture” Treatment Nonoperative No signification articular displacement Closed reduction and LLC Non weight bearing for 6 wk Progressive weight bearing until 12-18 wk Operative Signification articular displacement Plate and screws Distraction ring


Ankle fractures :Injury to lower extremity Ankle fractures General Deltoid ligament Between med malleolus and talus Posterior tibial lip Posterior part of tibia The third malleolus Distal tibiofibular syndesmosis Maintains ankle stability Symptoms and signs Pain Swelling Deformity Difficult or unable weight bearing


Ankle fractures :Injury to lower extremity Ankle fractures investigation X-ray standard AP and lateral X-ray mortise view Treatment Nonoperative Minimal displaced CR and short leg cast 6-8 wk Operative Displaced Internal fixation Plating Screws Tension band wiring


Slide 65:Injury to lower extremity


Ankle dislocation and fracture dislocation :Injury to lower extremity Ankle dislocation and fracture dislocation General Combination of fractures around the ankle and dislocation Associated fractures Malleoli Talus Distal tibia Require neurovascular assessment


Ankle dislocation and fracture dislocation :Injury to lower extremity Ankle dislocation and fracture dislocation Symptoms and signs Common symptoms and signs of fracture Distorted ankle anatomy May associated neurovascular deficits Treatment immediate CR and immobilization Definite fracture treatment


Fractures of the foot and fracture dislocations :Injury to lower extremity Fractures of the foot and fracture dislocations Stress and neuropathic fractures Fracture of the talus Dislocation around the talus Fracture of the calcaneus Fractures of the tarsals and joint injuries Fractures of the metatarsals and phalanges


Stress fractures :Injury to lower extremity Stress fractures Excessive, repetitive stress applied to bone Most common: 2nd metatarsal, calcaneus Mild to moderate pain and/or swelling Diagnosis X-ray: from 2 wk Bone scan: from 2 days Treatment Nonoperative: SLC 4-6 wk


Neuropathic fractures :Injury to lower extremity Neuropathic fractures “Charcot joint” Associated with DM, peripheral nerve diseases Initiating event is fracture around the joint Rapid joint destruction without pain Usually,patients present late Treatment Nonoperative: SLC with non weight bearing until heal


Fracture of the talus :Injury to lower extremity Fracture of the talus Neck, head, body and process Fracture of the talar neck Hyperdorsiflexion injury May associated dislocation Subtalar joint Ankle joint Talonavicular joint Treatment Nonoperative Operative


Frcacture of the talus :Injury to lower extremity Frcacture of the talus Treatment Nonoerative No displacement, no dislocation Short leg cast (SLC) 8-12 wk Displaced and/or dislocation CR and SLC 8-12 wk Operative Screws or K-wires fixation and cast Complications Common Fx complications Avascular necrosis (AVN) Skin necrosis Posttraumatic OA


Dislocation around the talus :Injury to lower extremity Dislocation around the talus Subtalar dislocation Inversion & eversion injuries to the foot Common S&S of dislocation Compromised neurovascular function CR if failed open reduction SLC 4 wk Talar dislocation Most are open injuries Reduction with soft tissue management SLC (may be with pins) 6 wk Results in AVN


Fracture of the calcaneus :Injury to lower extremity Fracture of the calcaneus General The most common tarsal bone Fx Thin cortex with cancellous bone inside Support the body weight Mechanisms of injury Most are falling from heights Associated spinal injury Radiographic findings Standard AP, lateral Bohler’s angle (tuber angle) 25-40 deg Calcaneal axial view


Fracture of the calcaneus :Injury to lower extremity Fracture of the calcaneus Treatment Nonoperative Non or minimal displaced SLC 6-8 wk Operative Percutaneous pin and SLC Open reduction and internal fixation (ORIF) Plate Screws Staples


Fractures of the tarsals and joint injuries :Injury to lower extremity Fractures of the tarsals and joint injuries General Midfoot 3 cuneiforms Navicular Accessory navicular Cuboid Midtarsal joint (Chopart’s joint) Talonavicular Calcaneocuboid Tarsometatarsal joint (Linfranc’s joint)


Fractures of the tarsals and joint injuries :Injury to lower extremity Fractures of the tarsals and joint injuries Diagnosis Usually overlooked Less appreciated Treatment Tarsal bones Usually nonoperative SLC 4-6 wk Midtarsal joint CR and/or pin and SLC Arthrodesis in late case Tarsometarsal joint Requires adequate Rx CR and pinning ORIF


Fractures of the metatarsals and phalanges :Injury to lower extremity Fractures of the metatarsals and phalanges General Usually nonoperative treatment SLC 4-6 wk Some conditions Open Fx with problem of skin etc. Posterior splint Operative treatment Soft tissue management Displaced Fx Longitudinal K-wire Small screws


Fractures of the metatarsals and phalanges :Injury to lower extremity Fractures of the metatarsals and phalanges Common Fx Ballet dancer Fx Spiral Fx at distal of 5th metatarsal Treatment: SLC 6 wk Jones Fx (Dancer Fx) Fx base of 5th metatarsal Treatment: SLC 6 wk Phalanges Fx Posterior splint 4 wk


Thank You :Injury to lower extremity Thank You