Background: Despite the fact that meniscocapsular anterior detachment is the most common location of instability in children with a Discoid Lateral Meniscus (DLM), there is a lack of consensus about the type of repair that should be utilized for stabilization. The aim of this study was to determine the best fixation method for anterior detachment of DLM in children. Our hypothesis was that excessive rigidity with fixation would restrict meniscal mobility and increase the rate of failure or prevent full knee flexion.
Methods: This study was a retrospective single-center study consisting of 51 consecutive knees (45 children) with menico-capsular anterior detachment that underwent stabilization and minimal saucerization of the meniscus between 2007 and 2018. We aimed to compare the need for revision surgery and knee flexion between the different types of fixations utilized; namely we compared meniscopexy using anchors on the tibia (n=30) with outside-in arthroscopic soft tissue fixation (n=21), and absorbable (n=18) and nonabsorbable sutures (n=33) were compared.
Results: The mean age at surgery was 10.4 years (3 to 17) with a mean follow-up of 52 months (18 to 148). The group of knees treated with absorbable sutures had a significantly better rate of full knee flexion (15/18) compared with the nonabsorbable group (17/33) ( P =0.03). Despite the absence of significance ( P =007), there was a lower rate of revision surgery due to suture failure in the soft tissue fixation group (0 revision operations) compared with the meniscopexy group (5 revision operations).
Conclusions: For anterior meniscocapsular detachment of DLM, it is recommended to perform soft tissue fixation with absorbable sutures, as this technique resulted in better knee flexion and a lower rate of revision surgery when compared with meniscopexy and nonabsorbable suture fixation.
Level of evidence: Level III-retrospective case studies.
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