Midfoot Injuries
A 32-year-old man presents after a motorcycle accident with severe midfoot pain and swelling. Weight-bearing is not possible. Radiographs show lateral displacement of the base of the second metatarsal relative to the intermediate cuneiform, with a small avulsion fracture at the medial aspect of the second metatarsal base. The other metatarsals are also displaced laterally with no medial displacement of the first metatarsal. Regarding Lisfranc injuries:
Mark each as TRUE or FALSE
The Lisfranc ligament is the key stabilizer connecting the medial cuneiform to the base of the secon...
Myerson classification: Type A (total incongruity - all metatarsals displaced in same direction), Ty...
The Lisfranc ligament connects the first to third metatarsal; the dorsal component is the strongest;...
Diagnosis: weight-bearing radiographs are essential for subtle injuries (comparison to contralateral...
Treatment: purely ligamentous injuries with instability often have worse outcomes than fracture-disl...
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Click T (True) or F (False) for each option