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- Title
Biomechanical evaluation of bovine stifles stabilized with an innovative braided superelastic nitinol prosthesis after transection of the cranial cruciate ligament.
- Authors
Constant, Caroline; Braïlovski, Vladimir; Wagnac, Éric; Petit, Yvan; Desrochers, André; Nichols, Sylvain
- Abstract
Objective: To determine the stability bovine stifles stabilized with nylon or nitinol superelastic prostheses after transection of the cranial cruciate ligament (CCL). Study design: Ex vivo study. Sample population: Stifles (n = 15) harvested from adult bovine cadavers. Methods: The stifles were randomly assigned pairwise to a ligament reconstruction technique (n = 5): (1) and (2) Hamilton's technique using a prosthesis made of 24 nitinol strands (0.39 mm) braided at 40°or single 600‐lb test nylon implant, and (3) nitinol prosthesis placed in femoral and tibial bone tunnels (bone‐to‐bone). Craniocaudal tibial translation at ±2000 N was applied to the tibia, and mediolateral angular displacement via measured under torsional tibial loading at ±60 Nm on three occasions: intact CCL, transected, and stabilized. Outcomes were evaluated with a mixed effect linear model for repeated measures. Results: Bone‐to‐bone using nitinol was the only repair that decreased tibial translation after CCL transection (p =.001) with a 23% change magnitude compared with intact CCL. Hamilton was the only stabilization reestablishing angular displacement, similar to intact CCL (p =.109 and.134 for nitinol and nylon). Bone‐to‐bone nitinol stabilization decreased angular displacement after CCL‐transection with an 8% change magnitude (p =.040) without returning to normal values. Conclusion: CCL replacement with nylon did restore joint stability. Nitinol prostheses passed through single femoral and tibial bone tunnels (bone‐to‐bone) were the only techniques reducing tibial translation. Clinical significance/impact: Bone‐to‐bone stabilization with a nitinol prosthesis may be considered as an alternative to nylon for CCL replacement in cattle. These results provide evidence to justify clinical evaluation in cattle undergoing CCL replacement.
- Subjects
ANTERIOR cruciate ligament; NICKEL-titanium alloys; PROSTHETICS; TORSIONAL load; FEMUR
- Publication
Veterinary Surgery, 2021, Vol 50, Issue 7, p1398
- ISSN
0161-3499
- Publication type
Article
- DOI
10.1111/vsu.13715