Saito Hidetomo, Itoi Eiji, Sugaya Hiroyuki, Minagawa Hiroshi, Yamamoto Nobuyuki, Tuoheti Yilihamu
Department of Orthopedic Surgery, Akita University School of Medicine, Hondo 1-1-1, Akita, Japan.
Am J Sports Med. 2005 Jun;33(6):889-93. doi: 10.1177/0363546504271521. Epub 2005 Apr 12.
In patients with recurrent anterior dislocations of the shoulder, it is well known that the glenoid rim is often deficient (8%-95%). However, little is known regarding the precise location of the bony defect of the glenoid.
The bony defect is anterior rather than anteroinferior to the glenoid.
Cohort study (symptom prevalence); Level of evidence, 2.
The authors studied 3-dimensional images of the glenoid reconstructed from computed tomography to determine the location of the glenoid defect in 123 shoulders of 123 patients with recurrent anterior dislocations of the shoulder. They measured the location, extent, and orientation of the defect based on the clock face of the glenoid.
The defects were located between 12:08 and 6:32, with the range between 2:30 and 4:20 being the most frequent. The extent of the glenoid defect was 106.7 degrees +/- 27.1 degrees (mean +/- standard deviation). The mean orientation of the defect was pointing toward 3:01 on the clock face of the glenoid, at a mean angle of 90.5 degrees +/- 10.4 degrees from the 12-o'clock direction.
The glenoid defect is located almost anterior to the glenoid.
在复发性肩关节前脱位患者中，众所周知，肩胛盂边缘常常存在缺损（8% - 95%）。然而，关于肩胛盂骨缺损的确切位置却知之甚少。
骨缺损位于肩胛盂前方而非前下方。
队列研究（症状患病率）；证据等级，2级。
作者研究了从计算机断层扫描重建的肩胛盂三维图像，以确定123例复发性肩关节前脱位患者的123个肩胛盂缺损的位置。他们基于肩胛盂的钟面来测量缺损的位置、范围和方向。
缺损位于12:08至6:32之间，其中2:30至4:20范围最为常见。肩胛盂缺损的范围为106.7度±27.1度（平均值±标准差）。缺损的平均方向指向肩胛盂钟面上的3:01，与12点方向的平均角度为90.5度±10.4度。
肩胛盂缺损几乎位于肩胛盂前方。
