Optimizing Pressurized Contact Area in Rotator Cuff Repair: The Diamondback Repair

Burkhart SS, Denard PJ, Obopilwe E, et al (Univ of Texas Health Science Ctr at San Antonio; The San Antonio Orthopaedic Group, TX; Univ of Connecticut, Farmington) Arthroscopy 28:188-195, 2012^§

Abstract

Purpose

The purpose of this study was to compare tendon-bone footprint contact area over time under physiologic loads for 4 different rotator cuff repair techniques: single row (SR), triangle double row (DR), chain-link double row (CL), and diamondback double row (DBK).

Methods

A supraspinatus tear was created in 28 human cadavers. Tears were fixed with 1 of 4 constructs: SR, DR, CL, or DBK. Immediate post-repair measurements of pressurized contact area were taken in neutral rotation and 0° of abduction. After a static tensile load, pressurized contact area was observed over a 160-minute period after repair. Cyclic loading was then performed.

Results

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