Watanabe H, Shinozaki T, Arita S, Chigira M
Department of Orthopedic Surgery, Gunma University School of Medicine, Japan.
Can Assoc Radiol J. 1995 Oct;46(5):380-5.
To report the findings of magnetic resonance imaging (MRI) in two cases of apophyseal irregularity of the ischial tuberosity.
The authors describe the MRI findings for two males who presented with pain of sudden onset in the buttock. Both patients were examined by radiography, MRI and computed tomography, and one underwent bone scanning.
On T1-weighted images, signal intensity was decreased in both the apophysis and the body adjacent to it; however, the signal intensity on T2-weighted images was increased. These findings are consistent with avulsion fracture of the apophysis.
The MRI findings in these cases may support the previously suggested hypothesis that apophyseal irregularity with characteristic radiographic changes over time is caused by avulsion fracture of the apophyseal line. The relation between the characteristic radiographic features and the structural changes associated with fracture in this condition is discussed.
报告两例坐骨结节骨骺不规则的磁共振成像（MRI）检查结果。
作者描述了两名男性患者的MRI检查结果，这两名患者均表现为突发臀部疼痛。两名患者均接受了X线摄影、MRI及计算机断层扫描检查，其中一名患者还接受了骨扫描。
在T1加权图像上，骨骺及其相邻的骨干信号强度均降低；然而，在T2加权图像上信号强度增加。这些表现符合骨骺撕脱骨折。
这些病例的MRI检查结果可能支持先前提出的假说，即随着时间推移出现特征性影像学改变的骨骺不规则是由骨骺线撕脱骨折引起的。本文讨论了这种情况下特征性影像学特征与骨折相关结构变化之间的关系。
