کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4075342 1267036 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Total shoulder arthroplasty: Downward inclination of the glenoid component to balance supraspinatus deficiency
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Total shoulder arthroplasty: Downward inclination of the glenoid component to balance supraspinatus deficiency
چکیده انگلیسی

HypothesisSupraspinatus deficiency associated with total shoulder arthroplasty (TSA) provokes eccentric loading and may induce loosening of the glenoid component. A downward inclination of the glenoid component has been proposed to balance supraspinatus deficiency.MethodsThis hypothesis was assessed by a numeric musculoskeletal model of the glenohumeral joint during active abduction. Three cases were compared: TSA with normal muscular function, TSA with supraspinatus deficiency, and TSA with supraspinatus deficiency and downward inclination of the glenoid.ResultsSupraspinatus deficiency increased humeral migration and eccentric loading. A downward inclination of the glenoid partly balanced the loss of stability, but this potential advantage was counterbalanced by an important stress increase within the glenoid cement. The additional subchondral bone reaming required to incline the glenoid component indeed reduced the bone support, increasing cement deformation and stress.ConclusionGlenoid inclination should not be obtained at the expense of subchondral bone support.Level of evidenceBasic science study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Shoulder and Elbow Surgery - Volume 18, Issue 3, May–June 2009, Pages 360–365
نویسندگان
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