Heideman Gregory M, Baynes Keith E, Mautz Alan P, DuBois Melissa S, Roberts Jason W
Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, Milwaukee, WI, USA.
Emerg Radiol. 2011 Aug;18(4):357-61. doi: 10.1007/s10140-011-0941-z. Epub 2011 Feb 9.
Fracture of the fabella is rare, may be easily overlooked, and can be a clinically important cause of posterolateral knee pain following traumatic injury or total knee arthroplasty. To date, nine case reports of fabella fracture with radiographic documentation have been reported in the literature. This report documents a 55-year-old male pedestrian who was struck by an automobile and presented with radiographs demonstrating depressed lateral tibial plateau and proximal fibula fractures. Computed tomography (CT) was performed for surgical planning and demonstrated the additional finding of a radiographically occult nondisplaced fabella fracture. To the best of our knowledge, this is the first case in which CT documentation of a fabella fracture is reported. Fracture of the fabella is a rare but important clinical entity which may be overlooked clinically and radiographically. Clinical information can provide a high index of suspicion, and when coupled with radiographic and CT findings, may lead to the correct diagnosis. CT imaging of the knee may confirm a suspected fabella fracture or may help detect a radiographically occult fracture.
籽骨骨折较为罕见，可能容易被忽视，并且在创伤性损伤或全膝关节置换术后，可能是导致膝关节后外侧疼痛的一个重要临床原因。迄今为止，文献中已报道了9例有影像学记录的籽骨骨折病例报告。本报告记录了一名55岁男性行人，他被汽车撞倒，X光片显示胫骨外侧平台凹陷和腓骨近端骨折。为进行手术规划而进行了计算机断层扫描（CT），结果显示了另外一项影像学隐匿的无移位籽骨骨折。据我们所知，这是第一例报告有籽骨骨折CT记录的病例。籽骨骨折是一种罕见但重要的临床病症，在临床和影像学上都可能被忽视。临床信息可提供高度的怀疑指数，再结合影像学和CT检查结果，可能会得出正确的诊断。膝关节的CT成像可以确认疑似籽骨骨折，或有助于检测出影像学隐匿的骨折。
