Karakida O, Aoki J, Fujioka F, Watanabe T, Seo G S, Sone S, Negata T
Department of Radiology, Shinshu University, School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. 1995 Jun;55(7):483-7.
The radiological findings in four cases of gluteus maximus tendinitis were retrospectively analyzed. All the patients underwent radiographic, CT and MRI examinations. Amorphous or round calcifications were detected on lateral radiographs in three cases, and on CT in all cases. A small cortical erosion was observed in three cases on both radiographs and CT. MRI showed a thickened gluteus maximus tendon, but no other specific features. In the supine position, which is common in routine CT and MRI studies, the calcific deposits appeared to be distributed along the vastus lateralis muscle tendon. To correlate these radiographic observations with the topographic anatomy of the tendon's insertion, we investigated 14 thighs of seven cadavers, and clarified that the tendon's insertion was the main component of the lateral femoral intermuscular septum. Consequently we performed MRI on a volunteer in a prone position who was asked to maintain contraction of the gluteus maximus and quadratus femoris muscles. The images obtained showed clearly that the gluteus maximus tendon was directed dorsally. In conclusion, radiography and CT are the modalities of choice for diagnosis of this entity. Additionally, radiologists should be aware that the gluteus maximus tendons are directed laterally as a main part of the lateral femoral intermuscular septum on routine CT and MRI.
对4例臀大肌肌腱炎的影像学表现进行回顾性分析。所有患者均接受了X线、CT和MRI检查。3例患者在X线平片上检测到无定形或圆形钙化，所有病例在CT上均检测到钙化。3例患者在X线平片和CT上均观察到小的皮质侵蚀。MRI显示臀大肌肌腱增厚，但无其他特异性表现。在常规CT和MRI检查常见的仰卧位，钙化沉积物似乎沿股外侧肌肌腱分布。为了将这些影像学观察结果与肌腱附着处的局部解剖结构相关联，我们对7具尸体的14条大腿进行了研究，并明确肌腱附着处是股外侧肌间隔的主要组成部分。因此，我们让一名志愿者俯卧位，保持臀大肌和股方肌收缩，对其进行了MRI检查。获得的图像清楚地显示臀大肌肌腱指向背侧。总之，X线和CT是诊断该病的首选检查方法。此外，放射科医生应注意，在常规CT和MRI上，臀大肌肌腱作为股外侧肌间隔的主要部分指向外侧。
