Randelli M, Gambrioli P L
Clin Orthop Relat Res. 1986 Jul(208):151-6.
Past radiologic and anthropometric studies report a high incidence of glenoid anteversion and increased humeral retrotorsion in patients with recurrent anterior dislocation (RAD) of the shoulder. However, recent radiologic studies do not demonstrate significant developmental variations between normal and unstable shoulders. To investigate these conditions, the authors used computed tomography (CT), which offered the advantage of permitting a transverse view at different levels of the glenohumeral joint. CT also avoided the typical distortion inherent in plain radiographs performed in the axial projection. No significant developmental differences in glenohumeral index, glenoid anteroposterior orientation, and humeral retrotorsion were found between 50 normal subjects and 40 patients with RAD. Only erosions and fractures of the glenoid may affect orientation and anteroposterior diameter of the glenoid. Mainly, traumatic lesions rather than developmental abnormalities seem to affect these parameters in RAD patients.
过去的放射学和人体测量学研究报告称，复发性肩关节前脱位（RAD）患者的肩胛盂前倾角较高，肱骨后扭转增加。然而，最近的放射学研究并未显示正常肩部和不稳定肩部之间存在显著的发育差异。为了研究这些情况，作者使用了计算机断层扫描（CT），其优点是能够在不同层面提供盂肱关节的横断面视图。CT还避免了轴向投照的普通X线片固有的典型失真。在50名正常受试者和40名RAD患者之间，未发现盂肱指数、肩胛盂前后方向和肱骨后扭转存在显著的发育差异。只有肩胛盂的侵蚀和骨折可能会影响肩胛盂的方向和前后径。主要是创伤性病变而非发育异常似乎会影响RAD患者的这些参数。
