Tensile Strength of Superior Labral Repairs in the Throwing Position

Autor: Dominic F.L. Southgate, Adam M. Hill, Anthony M. J. Bull, Andrew L. Wallace, Susan Alexander
Rok vydání: 2009
Předmět:
Zdroj: Shoulder & Elbow. 1:76-80
ISSN: 1758-5740
1758-5732
DOI: 10.1111/j.1758-5740.2009.00018.x
Popis: Background Type II superior labral (SLAP) tears commonly occur in athletes in the abducted and externally rotated position in the late cocking phase of throwing. This study investigates arthroscopic repairs of SLAP lesions using a knotless polymeric (KINSA) anchor. Methods Superficial tissues were dissected from 10 cadaveric shoulders. The glenohumeral capsule was preserved. Type II SLAP tears were created through arthroscopic portals and repaired with two anchors anterior and posterior to the biceps tendon. Glenohumeral joints were then fixed in 60° gleno-humeral abduction in the scapular plane with 1 Nm torque in external rotation to recreate the late cocking phase of the throwing cycle. Specimens were mounted onto an Instron machine and the biceps tendon was loaded until failure. Results The mean ultimate peak load was 239 N (SD 101 N). The primary mode of failure was in the tendon substance and 19 out of 20 anchors remained intact in bone. Conclusion To our knowledge this is the first study to investigate arthroscopic SLAP repairs in an intact joint in this susceptible position. We conclude that the KINSA anchor can withstand high tensile loads and may be used to treat SLAP tears in high-demand overhead throwing athletes.
Databáze: OpenAIRE
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