Brown D D, Gumbs R V
Department of Radiology, Howard University Hospital, Washington, DC 20060.
J Natl Med Assoc. 1991 Apr;83(4):366-9.
Lisfranc fracture-dislocation is a rare but sometimes dramatic injury, most commonly associated with motor vehicle and industrial accidents, and falls from heights. Radiographic examination is a crucial point in the work-up of these patients. The most common findings on plain radiographs are separation of the bases of the first and second metatarsals and the "fleck" sign, a bony fragment resulting from a fracture of the base of the first or second metatarsal. These fractures are demonstrated in the two cases presented. We conclude that these lesions can usually be diagnosed with plain radiographs if scrupulous attention is paid when evaluating the normal anatomic alignments. Computed tomography should be reserved for equivocal cases.
跖跗关节骨折脱位是一种罕见但有时情况严重的损伤，最常与机动车事故、工业事故以及高处坠落相关。影像学检查是这些患者检查过程中的关键环节。普通X线片上最常见的表现是第一和第二跖骨基底分离以及“斑点”征，即第一或第二跖骨基底骨折产生的骨碎片。在给出的两例病例中显示了这些骨折情况。我们得出结论，如果在评估正常解剖对线时格外仔细，这些损伤通常可以通过普通X线片诊断出来。对于不明确的病例，应采用计算机断层扫描。
