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Lisfranc Injury (Mid-Foot Sprain or Fracture-Dislocation)

The Lisfranc joint complex spans the articulation between the mid-foot (cuneiforms) and the bases of the metatarsals. When that keystone is sprained, fractured, or dislocated, the entire arch loses integrity—often masquerading as a “bad mid-foot sprain” until chronic pain or degenerative arthritis appears. Our board-certified podiatrists provide on-site weight-bearing imaging, precise injury grading, and a spectrum of evidence-based care—from rigid immobilisation to low-profile plate fixation—so you regain a stable, pain-free push-off.

Mechanism & Risk Factors

High-Energy Trauma Low-Energy / Athletic Predisposing Anatomy
Motor-vehicle collision, heavy object crush Twist/fall while forefoot is plantar-flexed—common in football, soccer, gymnastics Metatarsus primus elevatus or long 2nd metatarsal creates instability
Fall from height Missed step off a curb with foot caught in pedal/strap Generalised ligamentous laxity
Equestrian stirrup injury Pivot while foot still strapped in ski or cycling binding Previous mid-foot sprain

Axial load + plantar-flexion forces the 2nd metatarsal base to displace—tearing the Lisfranc ligament and often fracturing adjacent joints.

Clinical Presentation

  • Mid-foot swelling & bruising—especially plantar ecchymosis (“bruise on sole” pathognomonic)
  • Pain with mid-foot squeeze test or rotational stress
  • Difficulty bearing weight; “standing on tiptoes” accentuates pain
  • Subtle widening between 1st and 2nd toes on inspection
  • In chronic/neglected cases: collapsing arch, forefoot widening, dorsal mid-foot bump

Diagnostic Work-Up

  • Weight-bearing AP, oblique & lateral foot X-rays Look for:
    • Diastasis > 2 mm between 1st-2nd metatarsals
    • “Fleck sign” (bony fragment in Lisfranc space)
  • Stress comparison X-ray or CT for subtle injuries.
  • MRI delineates purely ligamentous sprains, guides surgery vs casting.

Missed Lisfranc injuries are the #1 cause of mid-foot post-traumatic arthritis—why weight-bearing views are essential.

Evidence-Based Management

Injury Grade Management Outcome Notes
Stable sprain (no diastasis, pain only) Non-weight-bearing cast 6 wks → CAM boot 4 wks → PT > 90 % return to sport if strict NWB followed
Diastasis ≤ 2 mm or small avulsion fleck Percutaneous screw or suture-button fixation (single 3.5 mm trans-diastasis screw) Hardware removed at 3-4 mo; low arthritis rate
Fracture-dislocation or diastasis > 2 mm Open reduction + dorsal low-profile plate OR screw fixation across joints 1-3 Anatomic reduction halves risk of OA; NWB 8 wks
Comminuted or chronic collapse Primary fusion of 1st-3rd TMT joints Shown superior pain relief vs late ORIF in delayed cases

Meta-analyses: primary fusion for severe injuries yields comparable function and lower re-operation vs ORIF in high-energy patterns.

Treatment Philosophy

  • Weight-bearing imaging on day 1 If you can stand, we film it; subtle widening mandates early fixation.
  • Anatomic reduction > hardware choice Whether screw, plate, or suture-button, perfect alignment predicts success.
  • Sport-specific rehab Return-to-run protocol once pain-free single-leg calf raise & mid-foot squeeze negative.
  • Shared decision on hardware removal Athletes often elect screw removal at 3-4 mo; low-demand patients may leave asymptomatic screws.

Frequently Asked Questions

Yes—if the joint is truly stable (< 2 mm diastasis) and you commit to 6 weeks strict non-weight-bearing. Any displacement warrants fixation.

The Lisfranc ligament tears from underside up; blood pools on the sole first—an early clue that X-rays (especially weight-bearing) are mandatory.

Cleared for jogging around 12 weeks once fusion or screw sites consolidate; pivot-cut sports ~6 months, pending strength and CT/X-ray confirmation.

Regain a Solid Mid-Foot Foundation

Ignoring mid-foot pain after a twist or crush invites chronic arthritis. Schedule an urgent evaluation with North Texas Podiatry Associates for weight-bearing imaging, expert grading, and a personalized path—cast to precise fixation—back to confident push-off.

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