Lisfranc Injuries Selene G. Parekh, MD, MBA Associate Professor North Carolina Orthopaedic Clinic Department of Orthopaedic Surgery Adjunct Faculty Fuqua Business School Duke University Durham, NC 919.471.9622 www.seleneparekhmd.com @seleneparekhmd
Lisfranc Injuries
Selene G. Parekh, MD, MBAAssociate Professor
North Carolina Orthopaedic ClinicDepartment of Orthopaedic Surgery
Adjunct Faculty Fuqua Business SchoolDuke University
Durham, NC919.471.9622
www.seleneparekhmd.com@seleneparekhmd
Overview• Anatomy
• Radiographic Findings
• Surgical Technique
Anatomy
• 3 Column Model• Medial Column
• Medial Cuneiform• 1st Metatarsal
• Middle Column• Middle and Lateral
Cuneiforms• 2nd and 3rd Metatarsals
• Lateral Column• Cuboid• 4th and 5th Metatarsals
Ligamentous Anatomy
• Medial cuneiform – 2nd metatarsal ligament complex • Dorsal ligament• Interosseous
• Lisfranc ligament• Plantar ligament
• Inserts into 2nd and 3rd metatarsal bases
( Solan et al. Foot Ankle Int 2001: 22(8) and de Palma et al. Foot Ankle Int 1997: 18(6) )
Ligamentous Anatomy
• Biomechanical evaluation ( Solan et al. Foot Ankle Int 2001: 22(8) )
Stiffness(N/mm) Strength(N)• Dorsal 40 ± 9 170 ± 33• Lisfranc 90 ± 3 449 ±58• Plantar 62 ± 3 305 ± 38
Lisfranc ligament is stiffest and strongest overall
Diagnosis
• Mechanism of Injury• Indirect
• Loading of plantarflexed foot
• Failure of weak dorsal ligaments
• Most common mechanism
• MVA• Sports injuries• Falls from heights
Diagnosis
• Mechanism of Injury• Direct
• Loading or crushing of dorsum of foot
• Significant soft tissue injury
• Compartment syndrome
• Open injuries
Diagnosis
• Clinical Evaluation• Plantar midfoot ecchymosis
• Gap between 1st and 2nd phalanges
• Tarsometatarsal tenderness
• Pain at TMT joint 2°• PROM metatarsal heads• Weightbearing• Single limb rise
Radiographic Evaluation
• AP view – 15o cephalad tilt (Stein RE. Foot Ankle, 1983)
• Middle Column• Medial border 2nd
metatarsal • Medial border middle
cuneiform• IM space between 1st and
2nd metatarsals is equal to space between the medial and middle cuneiforms
Radiographic Evaluation
• 30o oblique view (Stein RE. Foot Ankle 1983)• Lateral border 3rd
metatarsal continuous with lateral border lateral cuneiform
• Medial border 4th metatarsal continuous with medial border cuboid
• IM space b/w 2nd and 3rd metatarsals equal to space b/w middle and lateral cuneiforms
Radiographic Evaluation
• Lateral View• Superior border of
second metatarsal is continuous with superior border second cuneiform
• No dorsal nor plantar displacement of metatarsal bases
• Subtle
Radiographic Findings
• Fleck Sign
Radiographic Findings
• Intercuneiform Variant
Radiographic Findings
• Fracture/Dislocation
Radiographic Findings
• Cuboid Fracture
Radiographic Findings
• Complete Dislocation
Radiographic Findings
Surgical Management
• Approach• Dorsum of 1st IM space
• Access 1st, 2nd, and 3rd MTC joints
• Avoid• Medial SPN, DPN,
DP artery• Full thickness flaps
Surgical Management
• Approach• Dorsum 4th metatarsal
• Access to 4th and 5th MTC joints
• Avoid Intermediate SPN
Surgical Management
• Direct Visualization of the TMT joints
• Metatarsal fractures addressed first
• Fixation proceeds from medial to lateral
Case Presentation - Subtle
Case Presentation - HWR
Postop Protocol
• Week 0-2 NWB splint
• Week 2-6 in SLNWBC
• Week 6-12 CAM - NWB
• Week 12 – WBAT Shoe
• Week 16-20 – Hardware Removal
Case Presentation – Fracture/Dislocation
Case Presentation – Fracture/Dislocation
Case Presentation – 3 column injury
Case Presentation – 3 column injury
Surgical Approach – Lateral Column Fixation
• Buried K-wire utilized for 4th and 5th TMT• Lateral Column is mobile• Prevents Stiffness• Remove at 6 weeks.
Case Presentation – Cuboid Fracture
Case Presentation – Cuboid Fracture
Surgical Approach – ORIF Cuboid
• Fracture is comminuted• Fixation difficult to achieve
• Locking plate
• Bone graft to support articular surface• Autogenous calcaneus is good source
Case Presentation – Intercuneiform Variant
Case Presentation
Case Presentation
Summary
• Maintain High Level of Suspicion• Weight bearing radiograph critical
• Single Limb WB xray• Stress radiography with sedation
• Multiple presentation types• Surgical Technique
• ORIF metatarsal fracture• Medial to Lateral Fixation• Intraop Stress radiography to ensure joints stable and
reduced.
RE ECT
the ankle
the foot