Is radiographic measurement of acromiohumeral distance on anteroposterior view after reverse shoulder arthroplasty reliable?

详细信息    查看全文

• 作者：Birgit S. Werner ; MD^a ; ^c ; ^{birgitwerner@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; Adrien Jacquot ; MD^b ; Daniel Molé ; MD^b ; Gilles Walch ; MD^c
• 关键词：Level IV ; Diagnostic Study
• 刊名：Journal of Shoulder and Elbow Surgery
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：25
• 期：9
• 页码：e276-e280
• 全文大小：379 K

文摘

Reverse shoulder arthroplasty leads to arm lengthening. Different techniques have been described to determine postoperative lengthening. The purpose of this study was to evaluate the reliability of the acromiohumeral distance (AHD) in determining arm lengthening after reverse shoulder arthroplasty.

Methods

At 2 centers, 44 patients who had received an onlay design reverse shoulder arthroplasty were observed for a minimum of 6 months. Examination followed a standardized protocol including preoperative and postoperative radiographs on anteroposterior view in neutral rotation. Two orthopedic surgeons independently performed the measurements in random order.

Results

Mean arm lengthening averaged 2.5 cm (range, 0.3-3.9 cm) according to AHD measurement. Significant differences in interobserver and intraobserver variability for postoperative AHD measurements were found (P < .01). The mean intrapatient difference was 0.5 cm (range, 0.02-1.5 cm).

Conclusion

According to our study, the AHD is not a reliable measurement technique to determine arm lengthening after reverse shoulder arthroplasty.