Beischer A D, Simmons T D, Torode I P
Royal Children's Hospital, Melbourne, Australia.
J Pediatr Orthop. 1999 May-Jun;19(3):359-61.
Glenoid version in a group of 29 children with obstetric brachial plexus paralysis and posterior dislocation of the shoulder was studied by using computed axial tomography (CT). The CT scan in most patients was done before an open release and reduction of the shoulder. A comparison was made between the normal and affected sides in regard to glenoid version and structure. In the study population, there were 16 girls and 13 boys with an average age at the time of initial CT of 2.8 years. Sixteen of the patients had posterior dislocations of the right shoulder, and none was bilateral. In 18 patients, the neurologic lesion was confined to the upper roots of the brachial plexus, with the remaining patients having whole plexus involvement. A significant difference in glenoid version between normal and affected sides was found in these patients. The mean glenoid version for the dislocated side was -29.5 +/- 2.5 degrees and that of the normal side was -6.9 +/- 2.4 degrees. Glenoid structure was different in dislocated shoulders. The glenoid articular surface was observed to be laterally convex in the majority of cases, and in these cases, the posterior rim of the glenoid was often hypoplastic and rounded.
利用计算机断层扫描（CT）对一组29例患有产瘫性臂丛神经麻痹及肩关节后脱位的儿童的肩胛盂倾斜度进行了研究。大多数患者在进行开放性肩关节松解及复位手术前接受了CT扫描。就肩胛盂倾斜度和结构而言，对正常侧与患侧进行了比较。在该研究人群中，有16名女孩和13名男孩，初次CT检查时的平均年龄为2.8岁。16例患者为右肩关节后脱位，无一例为双侧脱位。18例患者的神经损伤局限于臂丛神经的上根，其余患者则为整个臂丛神经受累。在这些患者中，发现正常侧与患侧的肩胛盂倾斜度存在显著差异。脱位侧肩胛盂倾斜度的平均值为-29.5±2.5度，正常侧为-6.9±2.4度。脱位肩关节的肩胛盂结构有所不同。在大多数情况下，肩胛盂关节面呈外侧凸起，在这些病例中，肩胛盂后缘常发育不全且呈圆形。
