Abstract
ObjectiveTo evaluate the clinical and radiologic outcomes of meniscal allograft transplantation (MAT) using a modified bone plug technique.MethodsWe conducted a retrospective single-center study of 73 patients who underwent MAT between January 2007 and December 2013. The International Knee Documentation Committee (IKDC) score, Lysholm score, Tegner score, visual analogue scale (VAS), and physical examinations were retrospectively reviewed to measure clinical outcomes after MAT, and questionnaires regarding activity and factors were analyzed. Magnetic resonance imaging (MRI) was used to assess the cartilage status and meniscal extrusion.ResultsThe mean follow-up was 37 months for 61 patients (65 knees), and 12 patients were lost to follow-up. The mean meniscal extrusion was 3.39 ± 0.90 mm, the relative percentage of extrusion (RPE) was 34.82% ± 12.71%, and arthrosis progression was observed in 8 of 61 cases (13.1%). The mean results for VAS, IKDC, and Lysholm scores were significantly improved after MAT (P < 0.05), but there were no significant differences in the range of motion or Tegner score (P > 0.05). Thirty-eight (62.3%) patients were able to return to their previous level of activity, and 23 (37.7%) patients reached a mean 76.7% of the previous level of activity. Of the 23 patients reporting a decrease in activity, 10 reported a fear of reinjury as the primary factor limiting activity. The patient satisfaction rate in the study was 78.7%.ConclusionOur modified bone plug method with anatomical meniscal root reinsertion was an effective surgical method, and the majority of active patients with meniscal disorders returned to preinjury levels of activity.
Highlights
The meniscus plays an essential role in the function and biomechanics of the knee joint, providing an even load distribution across the joint, thereby decreasing peak contact forces on the tibiofemoral articular cartilage [1]
The Wilcoxon rank sum test showed there was no significant difference between preoperative and postoperative cartilage status (Table 2), and there was no significant difference in meniscal allograft transplantation (MAT) follow-up results between different preoperative cartilage status groups (Table 3)
During this research, cartilage status was evaluated by Magnetic resonance imaging (MRI) according to the modified Outerbridge system, and the Wilcoxon rank sum test showed there was no significant difference between preoperative and postoperative cartilage status
Summary
The meniscus plays an essential role in the function and biomechanics of the knee joint, providing an even load distribution across the joint, thereby decreasing peak contact forces on the tibiofemoral articular cartilage [1]. Ren et al Journal of Orthopaedic Surgery and Research (2018) 13:97 allograft transplantation (MAT) has become a viable option in meniscus-deficient patients. It is essential to ensure a precise size match between the graft and the host in techniques involving bone plugs, which can increase the risk of cartilage degeneration and incorrect positioning [7]. It can reduce the morbidity of surgery with suture fixation and can be performed under arthroscopy. The purpose of this study was to evaluate the clinical and radiologic outcomes of MAT using a new modified bone plug technique with anatomical meniscal root reinsertion
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