Humeral-sided Radiographic Changes Following Reverse Total Shoulder Arthroplasty
Message:
Abstract:
Background
We sought to characterize humeral-sided radiographic changes at a minimum of 2 years after reverseshoulder arthroplasty (RSA) to determine their association with specific implantation techniques.
Methods
The immediate and most recent postoperative anteroposterior radiographs of 120 shoulders with primary RSAand a minimum of 2-years of radiographic follow-up were analyzed (mean follow-up 35.2 months). Stress shielding wasevaluated by measuring cortical thickness at 4 different locations. Three independent examiners evaluated radiographsfor humeral osteolysis, radiolucent lines, stress shielding, stem loosening, and scapular notching.
Results
The cortical diameter, marker of external stress shielding, significantly decreased from initial to mostrecent measurement (P<0.001), but did not differ between cemented and uncemented groups. Cemented stems hadsignificantly more osteolysis and radiolucent lines; uncemented stems had significantly more internal stress shielding(P<001). The presence of scapular notching was significantly correlated with the presence of humeral osteolysis(P<0.001). Three (2.5%) stems were deemed “at risk” for loosening and 2 (1.7%) were loose.
Conclusion
Cemented humeral stems were associated with an increased rate of radiolucent lines and osteolysis,whereas uncemented stems were associated with more internal stress shielding. Humeral cortical thickness significantlydecreased over time regardless of fixation. There was an association between scapular notching and increasedhumeral osteolysis.Level of evidence: III
Article Type:
Research/Original Article
Language:
English
Published:
Archives of Bone and Joint Surgery , Volume:8 Issue:1, 2020
Pages:
50 - 57
magiran.com/p2083917  
روش‌های دسترسی به متن این مطلب
اشتراک شخصی
در سایت عضو شوید و هزینه اشتراک یک‌ساله سایت به مبلغ 300,000ريال را پرداخت کنید. همزمان با برقراری دوره اشتراک بسته دانلود 100 مطلب نیز برای شما فعال خواهد شد!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی همه کاربران به متن مطالب خریداری نمایند!