Tingart, Markus J. and Apreleva, M. and Lehtinen, J. and Zurakowski, D. and Warner, J. J. P. (2004) Anchor design and bone mineral density affect the pull-out strength of suture anchors in rotator cuff repair - Which anchors are best to use in patients with low bone quality? AMERICAN JOURNAL OF SPORTS MEDICINE, 32 (6). pp. 1466-1473. ISSN 0363-5465,
Full text not available from this repository. (Request a copy)Abstract
Background: Different metal and biodegradable suture anchors are available for rotator cuff repair. Poor bone quality may result in anchor loosening and tendon rerupture. Hypotheses: Higher bone mineral density is associated with higher pull-out strength of suture anchors. Depending on anchor placement, pull-out strengths of anchors are different within the greater tuberosity. Study Design: Cadaveric biomechanical study. Methods: Trabecular and cortical bone mineral densities were determined for different regions within the greater tuberosity. Metal screw-type and biodegradable hook-type anchors were cyclically loaded. Results: Mean failure load of metal and biodegradable anchors was 273 N and 162 N, respectively, for the proximal part (P < .01) and 184 N and 112 N, respectively, for the distal part (P < .01). Both types of anchors showed higher failure loads in the proximal-anterior and -middle parts of the greater tuberosity than in the distal part (P < .01). A significant positive correlation was found between cortical bone mineral density and failure load of metal anchors (P < .01). Conclusion: Bone quality, anchor type, and anchor placement have a significant impact on anchor failure loads. Clinical Relevance: Suture anchors should be placed in the proximal-anterior and -middle parts of the greater tuberosity. In the distal parts, biodegradable hook-like anchors should be used with caution.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MECHANICAL STRENGTH; rotator cuff repair; bone mineral density; suture anchor; anchor design; pull-out strength |
| Subjects: | 600 Technology > 615 Pharmacy |
| Divisions: | Medicine > Lehrstuhl für Orthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Jun 2021 10:23 |
| Last Modified: | 28 Jun 2021 10:23 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37200 |
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