Mini All-Suture Anchors for Repairing the Central Slip of the Extensor Tendon at the Proximal Interphalangeal Joint: A Biomechanical Investigation.

Autor:	Salas C; Department of Orthopaedics & Rehabilitation, The University of New Mexico Health Sciences Center, Albuquerque, NM; Center for Biomedical Engineering, The University of New Mexico, Albuquerque, NM., Brantley J; Department of Orthopaedics & Rehabilitation, The University of New Mexico Health Sciences Center, Albuquerque, NM; Center for Biomedical Engineering, The University of New Mexico, Albuquerque, NM., Mercer D; Department of Orthopaedics & Rehabilitation, The University of New Mexico Health Sciences Center, Albuquerque, NM. Electronic address: dmercer@salud.unm.edu., Gross J; Division of Biostatistics, Epidemiology, and Research Design, The University of New Mexico Health Sciences Center, Albuquerque, NM., Scott KL; Department of Orthopaedics & Rehabilitation, The University of New Mexico Health Sciences Center, Albuquerque, NM., Mikola E; Department of Orthopaedics & Rehabilitation, The University of New Mexico Health Sciences Center, Albuquerque, NM.
Jazyk:	angličtina
Zdroj:	The Journal of hand surgery [J Hand Surg Am] 2024 Oct; Vol. 49 (10), pp. 1042.e1-1042.e6. Date of Electronic Publication: 2023 Mar 03.
DOI:	10.1016/j.jhsa.2023.01.005
Abstrakt:	Purpose: This study evaluated 1.0-mm mini suture anchors for repairing the central slip of the extensor mechanism at the proximal interphalangeal joint. Studies have reported a requirement for central slip fixation to withstand 15 N during postoperative rehabilitation exercises and 59 N during forceful contraction. Methods: Index and middle fingers from 10 matched pairs of cadaveric hands were prepared with 1.0-mm mini suture anchors with 2-0 sutures or threaded with 2-0 sutures through a bone tunnel (BTP). In total, 10 index fingers from unmatched hands were prepared with suture anchors and fixed to the extensor tendons to evaluate the tendon/suture interface response. Each distal phalanx was secured to a servohydraulic testing machine, and ramped tensile loads were applied to suture or tendon until failure. Results: All anchors for the all-suture bone tests failed because of pullout from the bone (Mean failure force = 52.5+/-17.3 N). Three anchors from the tendon-suture pull out test failed by pullout from the bone and seven failed at the tendon/suture interface (Mean failure force = 49.0+/-10.1 N). Conclusions: The 1.0-mm mini suture anchor provides enough strength for early short-arc motion, but it may not be adequate for forceful contraction in the early postoperative rehabilitation stage. Clinical Relevance: The site of fixation, the type of anchor, and the type of suture used are key factors to consider for early range of motion, after surgery. (Copyright © 2024 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu