Background: All-inside meniscal repairs have gained popularity in the past few years. However, only a few prospective, randomized clinical studies have been done to compare different all-inside meniscal repair techniques.
Hypothesis: Meniscal repair with bioabsorbable meniscal screws and arrows results in similar clinical outcome on short-term follow-up.
Study Design: Randomized controlled trial; Level of evidence, 2.
Methods: Forty-two patients were prospectively randomized to have all-inside meniscal repair either by using bioabsorbable meniscal screws or bioabsorbable meniscus arrows (21 patients, 23 meniscal repairs in each group) for the fixation. The evaluation methods were clinical examination, Lysholm score, the International Knee Documentation Committee (IKDC) knee score, and magnetic resonance arthrography (MRA) evaluation. The average follow-up time was 27 months (standard deviation, 8).
Results: There were no differences between the study groups preoperatively. All 42 patients (100%) were available for the follow-up. However, during the follow-up, 11 patients had clinical failure, confirmed at second-look arthroscopy, of the repair leading to partial meniscal resection. Four failures (all on the medial meniscus) were observed with the use of meniscal screw fixation (17%), and 7 (4 on the medial meniscus, and 3 on the lateral meniscus) with the use of meniscus arrow fixation (30%) (P = .242). Six patients with meniscus arrows (29%) had chondral damage on the femoral condyles evaluated by MRA or at second-look arthroscopy, while none of the patients with the meniscal screws had the same (P = .018). However, the Lysholm and the IKDC scores were similar in both groups at follow-up.
Conclusion: All-inside meniscal repair with bioabsorbable meniscal screws and arrows resulted in similar clinical outcome, although significantly more chondral damage was observed when using bioabsorbable meniscus arrows for fixation.
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