Shoulder: Rotator Cuff

Comparable Biomechanical Results for a Modified Single-Row Rotator Cuff Reconstruction Using Triple-Loaded Suture Anchors Versus a Suture-Bridging Double-Row Repair

Lorbach O, Kieb M, Raber F, et al (Saarland Univ, Homburg/Saar, Germany; et al) Arthroscopy 28:178-187, 2012^§

Abstract

Purpose

To compare the biomechanical properties and footprint coverage of a single-row (SR) repair using a modified suture configuration versus a double-row (DR) suture-bridge repair in small to medium and medium to large rotator cuff tears.

Methods

We created 25- and 35-mm artificial defects in the rotator cuff of 24 human cadaveric shoulders. The reconstructions were performed as either an SR repair with triple-loaded suture anchors (2 to 3 anchors) and a modified suture configuration or a modified suture-bridge DR repair (4 to 6 anchors). Reconstructions were cyclically loaded from 10 to 60   N. The load was increased stepwise up to 100, 180, and 250   N. Cyclic displacement and load to failure were determined. Furthermore, footprint widths were quantified.

Results

In the 25-mm rupture, ultimate load to failure was 533 ± 107   N for the SR repair and 681 ± 250   N for the DR technique (P

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