A biomechanical comparison of repair techniques in posterior type II superior labral anterior and posterior (SLAP) lesions.

Abstract:

:The purpose of this study was to compare the 3 different fixation methods of posterior type superior labral anterior posterior (SLAP) II lesion. Fifteen cadavers were randomly divided into 3 groups to compare the initial strength of 3 different fixation methods in posterior type II SLAP lesions. Group I used 1 anchor for 1-point fixation with a conventional simple suture; group II used 1 anchor passing both limbs through the posterior-superior labrum in a mattress fashion; and group III used 2 anchors for 2-point fixation with conventional simple sutures. Repair failure (2 mm permanent displacement of repaired site) and ultimate failure were measured. The mean load to (clinical) failure was 156 +/- 22 N in group I, 117 +/- 33 N in group II, and 161 +/- 44 N in group III. The mean load to ultimate failure was 198 +/- 6 N in group I, 189 +/- 23 N in group II, and 179 +/- 22 N in group III. The specimen stiffness was equivalent among groups. In mode of failure, clinical failure (more than 2 mm separations) first occurred between the markers on the biceps tendon just above (A) and below (B) compared to other markers, and ultimate failure occurred at the labral-implant interface. A single simple suture anchor repair in posterior type II SLAP seems sufficient to withstand the initial load without clinical failure. A mattress suture, although it anchors the biceps root, seems to be inferior than simple suture technique.

journal_name

J Shoulder Elbow Surg

authors

Yoo JC,Ahn JH,Lee SH,Lim HC,Choi KW,Bae TS,Lee CY

doi

10.1016/j.jse.2007.03.025

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

144-9

issue

1

eissn

1058-2746

issn

1532-6500

pii

S1058-2746(07)00405-3

journal_volume

17

pub_type

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