Abstract
Purpose
The objective of present study was to introduce a modified double-layer bone-patellar tendon-bone (BPTB) allograft for arthroscopic single-bundle ACL reconstruction and investigate the clinical outcomes.
Methods
From 2007 to 2009, a total of 136 patients underwent arthroscopic single-bundle ACL reconstructions with BPTB allograft. Of which, 66 patients were with double-layer BPTB allograft (Group 1), and 70 patients were with conventional BPTB allograft (Group 2). Clinical outcomes including Lachman and pivot-shift tests, KT-1000 arthrometer measurements, and Lysholm and Tegner activity scores were compared between the two groups at a 2-year minimum follow-up.
Results
Forty-six patients in each group were at a two-year minimum follow-up. The mean side-to-side difference on the KT-1000 arthrometer was 1.2 ± 1.2 mm for group 1 and 2.1 ± 1.9 mm for group 2, with significant difference between the two groups (p = 0.017). The knee function was significantly better for group 1 than for group 2, because the mean Lysholm score was 94.2 ± 4.8 points versus 86.6 ± 7.1 points (p = 0.000), and the median Tegner score was 8 (range 5–10) points versus 6 (range 4–10) points (p = 0.001).
Conclusions
On the basis of the KT-1000 arthrometer evaluation and clinical measures, single-bundle ACL reconstruction with double-layer BPTB allograft achieves significantly lesser anterior laxity and better knee function than a single-layer allograft reconstruction.
Level of evidence
Therapeutic, retrospective comparative study, Level III.
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All authors have read and contributed to the submitted manuscript and there is no conflict of interest among the authors.
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This material has not been published and is not under consideration elsewhere. This study receives no financial support.
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Kang, H.J., Su, Y.L., Cao, H.J. et al. Arthroscopic single-bundle ACL reconstruction with modified double-layer bone-patellar tendon-bone allograft. Knee Surg Sports Traumatol Arthrosc 21, 2066–2071 (2013). https://doi.org/10.1007/s00167-012-2235-8
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DOI: https://doi.org/10.1007/s00167-012-2235-8