Abstract
The causes of graft failure after anterior cruciate ligament (ACL) reconstruction are multifactorial including the methods of graft fixation. The purpose of this study was to examine the ACL graft failure in three different methods of graft fixations including interference screw fixation, suture-post fixation and combined interference screw and suture-post fixation. We hypothesized that the fixation method after ACL reconstruction can affect the graft healing in tibial tunnel. Eighteen New Zealand white rabbits were categorized into three groups according to the method of fixation in unilateral ACL reconstruction with long digital extensor autograft. Histological examination demonstrated that the combined fixation and suture-post fixation groups showed significantly better integration between tendon and bone (P = 0.04). In immunohistochemical analysis, the combined fixation and suture-post fixation groups showed significantly higher BMP-2 and VEGF expressions than interference screw (P < 0.01). The tendon–bone healing after ACL reconstruction was affected by the method of graft fixation. Combined fixation with interference screw and suture-post reduced graft-tunnel micromotion and improved the graft healing in tibial tunnel.
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Funds were received in total or partial support for the research presented in this article. The funding source was the National Science Council (NSC-100-2314-B-182A-006).
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None declared, with any funds received for this study.
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Hsu, SL., Wang, CJ. Graft failure versus graft fixation in ACL reconstruction: histological and immunohistochemical studies in rabbits. Arch Orthop Trauma Surg 133, 1197–1202 (2013). https://doi.org/10.1007/s00402-013-1790-x
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DOI: https://doi.org/10.1007/s00402-013-1790-x