Mueller, Michael B. and Fredrich, H. H. and Steinhauser, E. and Schreiber, U. and Arians, A. and Imhoff, Andreas B. (2005) Biomechanical evaluation of different suture anchors for the stabilization of anterior labrum lesions. ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, 21 (5). pp. 611-619. ISSN 0749-8063, 1526-3231
Full text not available from this repository. (Request a copy)Abstract
Purpose: The aim of the study was to investigate the biomechanical performance of different devices for anterior shoulder reconstruction in a clinically relevant human cadaver shoulder model. Type of Study: Biomechanical cadaveric study. Methods: The soft tissue, except for the joint capsule, was dissected from 28 fresh-frozen human shoulder specimens. A Bankart lesion was created and repaired with 3 suture anchors. The devices tested were the 2.4-mm Fastak (Arthrex, Karlsfeld, Germany) with either Ethibond (Ethicon, Westwood, MA) no. 2 or 3, the 2.8-mm Fastak with Ethibond no. 2, the Panalok (Mitek, Norwood, MA) with Ethibond no. 2 with a modified setting technique, and the 8-mm Suretac (Acufex Microsurgical, Mansfield, MA). The specimens were anteriorly dislocated in 60 degrees glenohumeral abduction and 90 degrees external rotation. Load was measured continuously and failures were noted. The experimental groups were compared with each other and with a control group with intact shoulders. Results: Bankart repair with 2.4-mm Fastaks and Ethibond no. 2 and 3 failed at a mean load of 342.0 N and 692.2 N, respectively, predominantly by suture rupture at the eyelet of the anchor. Shoulder reconstruction with 2.8-mm Fastaks failed at an average load of 722.8 N, mostly by suture rupture at the knot. The difference to the 2.4-mm Fastak with Ethibond no. 2 was significant (P <.05). The mean load to failure was 983.8 N in the Panalok group, and the most frequent failure mode was suture rupture at the knot. Bankart repair with Suretac failed at an average load of 468.4 N, typically by capsular damage at the repair site. Capsular injuries in the control group occurred at a mean load of 958.2 N. Anterior shoulder reconstruction with 2.4-mm Fastak with Ethibond no. 2 and with Suretac were statistically significantly inferior to the control group (P <.05). Conclusions: All tested devices allow stable anterior shoulder reconstruction, but we recommend the Panalok and the 2.8-mm Fastak because they provided greater stability than either the 2.4-mm Fastak or the Suretac in our experiments. Suretac can possibly cause additional capsular damage in redislocations after Bankart repair. Clinical Relevance: This cadaveric study gives an insight into the biomechanical performance of a Bankart repair with different devices directly postoperative and shows possible failure modes and additional injuries in case of early traumatic redislocation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ROTATOR CUFF REPAIRS; INFERIOR GLENOHUMERAL LIGAMENT; PULL-OUT STRENGTH; SHOULDER JOINT; PROXIMAL HUMERUS; TENSION OVERLOAD; FAILURE STRENGTH; TISSUE FIXATION; BANKART REPAIRS; BONE; suture anchors; shoulder reconstruction; bankart lesion; shoulder instability |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 May 2021 06:27 |
| Last Modified: | 14 May 2021 06:27 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36152 |
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