Wybier M, Hamze B, Champsaur P, Parlier C
Service de Radiologie Ostéo-articulaire, Hôpital Lariboisière, Paris.
Ann Radiol (Paris). 1997;40(1):51-5.
Stress fractures of the tibia may disclose a longitudinal orientation which is obvious at bone scanning; a mild periostosis may appear on plain films; CT demonstrates a radially-oriented fracture in one aspect of the diaphyseal cortex. A cortical dissection-like vertically oriented insufficiency fracture may involve the medial aspect of the femoral shaft underlying the lesser trochanter; the fracture is concentric to the femoral cortex at CT. Insufficiency fractures of the sacrum may be misdiagnosed on plain films; bone scanning displays a typical H-shaped increased uptake which is a specific pattern. Insufficiency fractures of the pubis may appear as tumoral bone destruction; however no soft tissue mass is present at CT which in addition demonstrates normal fat tissue abutting the osseous lesion.
胫骨应力性骨折在骨扫描时可能显示出纵向走行，这在骨扫描中很明显；在平片上可能出现轻度骨膜增生；CT显示骨干皮质某一部位呈放射状骨折。一种类似皮质剥脱的垂直方向的骨质疏松性骨折可能累及小转子下方股骨干的内侧；在CT上，骨折与股骨皮质同心。骶骨骨质疏松性骨折在平片上可能被误诊；骨扫描显示典型的H形摄取增加，这是一种特异性表现。耻骨骨质疏松性骨折可能表现为肿瘤样骨质破坏；然而，CT上没有软组织肿块，此外还显示正常脂肪组织邻接骨病变。
