کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4075345 1267036 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biomechanical analysis of bursal-sided partial thickness rotator cuff tears
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Biomechanical analysis of bursal-sided partial thickness rotator cuff tears
چکیده انگلیسی

BackgroundTreatment of partial thickness supraspinatus tendon tears is controversial with no clearly defined treatment algorithms based on severity of tears. This study aims to evaluate the relationship between depth of partial thickness tears and strain.MethodsBursal-sided partial thickness tears were created at 1 mm increments in depth at the anterior portion of the supraspinatus tendon to ¾ tendon width on ten fresh-frozen shoulder specimens. The supraspinatus muscle was dynamically loaded from 0-50N, and strain recorded at both the anterior and posterior portions of the tendon.ResultsStrain in the intact posterior portion increased monotonically with tear depth and supraspinatus force. Strain in the torn anterior portion decreased with increasing tear thickness and loading force. At 60% thickness tear, strain was significantly higher (P = 0.023) in the intact posterior portion compared to intact tendon. As the tear thickness exceeded 50% tendon thickness, the strain in the intact tendon rapidly increased nonlinearly.ConclusionsBiomechanical results herein suggest increasing potential for tear propagation in the transverse plane with increasing depth of tears, and biomechanically supports repairs of grade III (>50% thickness).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 379–385
نویسندگان
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