title: 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.
authors: Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea.
authors: Jae Chul
authors: JC
authors: Yoo
authors: Jin Hwan
authors: JH
authors: Ahn
authors: Sang Hak
authors: SH
authors: Lee
authors: Hong Chul
authors: HC
authors: Lim
authors: Kui Won
authors: KW
authors: Choi
authors: Tae Soo
authors: TS
authors: Bae
authors: Chang Yang
authors: CY
authors: Lee
mesh_terms: D001182:Arthroscopy; D001696:Biomechanical Phenomena; D002102:Cadaver; D006801:Humans; D008023:Ligaments, Articular / Q000293:injuries* / Q000601:surgery; D019637:Orthopedic Procedures / Q000379:methods*; D011897:Random Allocation; D000070599:Shoulder Injuries; D053441:Suture Anchors; D013536:Suture Techniques