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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Characterization of Posterior Glenoid Bone Loss
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Characterization of Posterior Glenoid Bone Loss

机译：后关节盂骨丢失的特征

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Objectives: The purpose of this study was to characterize the morphology and location of posterior glenoid bone loss in pat ients with posterior instability instability utilizing computed tomography (CT). Methods: Clinical data was selected for patients with posterior shoulder instability that had undergone posterior stabilization (open or arthroscopic) or posterior osseous augmentation (distal tibia or iliac crest). Three fellowship-trained surgeons from two institutions contributed patients. Pre-operative CT data was collected for all patients. The axial cuts were segmented and reformatted in three-dimensions for glenoid analysis using Osirix. From this three-dimensional model, the following was calculated: percent bone loss (Nobuhara), total arc of the defect (degrees), and a clock-face description (start point, stop point, and average or direction). Pearson correlation coefficients were performed using significance of p<0.05. Results: Fifty shoulders from 50 patients were reviewed. Fourteen patients (average age 30 years; 93% male) had evidence of posterior glenoid bone loss and were included for evaluation. Defects on average involved 13.7±8.6% of the glenoid (range, 2-35%). The average start time (assuming all right shoulders) on the clock face was 10 o’clock ± 40 minutes and stopped at 6:30 ± 25 minutes. The average direction of the defect pointed toward 8:15 ± 25 minutes. The percent bone loss correlated with the total arc of the defect (Pearson: 0.93, p<0.05, R2: 0.86) and the direction of the bone loss (Pearson: 0.64, p<0.05, R2: 0.40). The direction of bone loss significantly moved more posterosuperior the larger the defect became (Pearson: 0.63, p<0.05, R2: 0.40). Conclusion: Posterior bone loss associated with posterior glenohumeral instability is typically directed posteriorly at 8:15 on the clock. As defect get bigger, this direction moves more posterosuperior. This information will help guide clinicians in understanding the typical location of posterior bone loss aiding in diagnosis, cadaveric models, and treatment.
机译：目的：本研究的目的是利用计算机断层扫描（CT）来表征后路不稳定不稳患者的后关节盂骨丢失的形态和位置。方法：选择经过后路稳定（开放或关节镜）或后骨增强（胫骨远端或顶）后路肩不稳定的患者的临床资料。来自两个机构的三名经过研究金培训的外科医生为患者提供了帮助。收集所有患者的术前CT数据。使用Osirix将轴向切口分割并重新格式化为三维尺寸以进行关节盂分析。从这个三维模型中，可以计算出以下内容：骨丢失百分比（Nobuhara），缺损的总弧度（度）和表盘描述（起点，终点和平均值或方向）。使用p <0.05的显着性进行皮尔逊相关系数。结果：回顾了50例患者的50例肩膀。 14例患者（平均年龄30岁; 93％男性）有后关节盂骨丢失的证据，并纳入评估。缺损平均占关节盂的13.7±8.6％（范围2-35％）。钟面上的平均开始时间（假设是所有右肩）为10点±40分钟，并于6:30±25分钟停止。缺陷的平均方向指向8:15±25分钟。骨丢失百分比与缺损的总弧度（皮尔森：0.93，p <0.05，R2：0.86）和骨丢失的方向（皮尔森：0.64，p <0.05，R2：0.40）相关。骨丢失的方向显着地向后上方移动，越大越远（Pearson：0.63，p <0.05，R2：0.40）。结论：与后肱骨肱骨不稳相关的后路骨丢失通常在时钟的8:15处向后定向。随着缺陷变大，该方向向后移动。这些信息将有助于指导临床医生了解后骨丢失的典型位置，以帮助诊断，尸体模型和治疗。

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