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Meniscoplasty leads to good mid-term to long-term outcomes for children and adolescents with discoid lateral meniscus

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Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

To date, there have been limited studies reporting the mid- to long-term outcomes of meniscoplasties for discoid lateral meniscus. The current study aims to evaluate the mid- to long-term outcomes of arthroscopic meniscoplasty for discoid lateral meniscus in children and adolescents.

Methods

In the study, all patients under the age of 21 years who had undergone arthroscopic meniscoplasty with or without meniscal repair or partial meniscectomy for symptomatic lateral discoid meniscus were included. All patients were then followed up for a minimum of 5 years (median 84 months; range 68–110 months). The Lysholm scores and Ikeuchi scores were collected pre-operatively and at final follow-up and were compared.

Results

A total of 24 knees were included in the study. The median duration of follow-up was 84.0 months (range 68–110 months). The Lysholm score improved from 53 (range 11–95) pre-operatively to 100.0 (range 60–100) at final follow-up (p < 0.001). Based on the Ikeuchi score pre-operatively, 15 knees were rated as poor (62.5%), 7 knees were rated as fair (29.2%), and 2 knees were rated as good (8.4%). The Ikeuchi score improved significantly at the final follow-up, such that 1 knee was rated as good (4.2%) and 23 knees were rated as excellent (95.8%) (p < 0.001). When analysing the effect of concomitant meniscal repair or partial meniscectomy on the outcomes at final follow-up, there was no apparent difference in the improvement in Lysholm score or Ikeuchi score when comparing between patients who had meniscoplasty alone and patients who had concomitant meniscal repair, as well as when comparing between patients who had meniscoplasty alone and patients who had concomitant partial meniscectomy.

Conclusion

Meniscoplasty leads to good mid-term to long-term outcomes for children and adolescents with discoid lateral meniscus. Concomitant procedures such as meniscal repair or partial meniscectomy do not improve or worsen the mid- to long-term outcomes in these patients.

Level of evidence

IV.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, University Orthopaedic, Hand and Reconstructive Microsurgery Cluster, National University Health System (NUHS), 1E Kent Ridge Road, NUHS Tower Block, Level 11, Singapore, 119074, Singapore

    Yau Hong Ng, Si Heng Sharon Tan, Andrew Kean Seng Lim & James Hoipo Hui

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  1. Yau Hong Ng
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  2. Si Heng Sharon Tan
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Correspondence to Si Heng Sharon Tan.

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The study was performed in accordance with the ethical standards of the institutional research committee.

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Dr Yau Hong Ng and Dr Si Heng Sharon Tan are both co-first authors.

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Ng, Y.H., Tan, S.H.S., Lim, A.K.S. et al. Meniscoplasty leads to good mid-term to long-term outcomes for children and adolescents with discoid lateral meniscus. Knee Surg Sports Traumatol Arthrosc 29, 352–357 (2021). https://doi.org/10.1007/s00167-020-05929-2

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