Biomechanical evaluation of an arthroscopic transosseous repair as a revision option for failed rotator cuff surgery

BMC Musculoskeletal Disorders
Felix DyrnaCory Edgar

Abstract

The number of revision rotator cuff cases is increasing. The literature is lacking guidance or biomechanical evaluation for fixation strength in a revision case scenario. Therefore, the aim of the study was to provide biomechanical data investigating primary fixation strength of a transosseous technique after anchor pullout failure of a single row reconstruction. It was hypothesized that an arthroscopic transosseous repair system as a procedure for rotator cuff revisions is providing equivalent stability compared to a primary single row suture anchor fixation due to change of fixation site. Eight matched pairs (n = 16) of fresh frozen human shoulders were tested. The paired specimen shoulders were randomly divided into two repair groups (A single row and B primary transosseous repair). The potted specimens were mounted onto the Servohydraulic test system. Both groups were tested under cyclic loading followed by load to failure testing. Suture anchor repair shoulders (group A) that were tested to failure underwent a revision transosseous repair and were subsequently tested again using the same setup and protocol (group C). The mean native footprint areas did not show a significant difference between groups. The reconstructed foo...Continue Reading

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Methods Mentioned

BETA
dissection
pullout
pull outs

Software Mentioned

Stata
MaxTRAQ

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