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Meniscal rim instability has a high prevalence and a variable location.
Ammann, Nora; Kaelin, Raphael; Ammann, Elias; Rutz, Erich; Studer, Kathrin; Valdarrabano, Victor; Camathias, Carlo.
Affiliation
  • Ammann N; Medical School Basel, University of Basel, Basel, Switzerland. nora.ammann@ksgr.ch.
  • Kaelin R; Department of Surgery, Kantonsspital Graubünden, Loëstrasse 170, 7000, Chur, Switzerland. nora.ammann@ksgr.ch.
  • Ammann E; Practice LEONARDO, Hirslanden Klinik Birshof, Münchenstein, Switzerland.
  • Rutz E; Department of Orthopedic Surgery, Spital Thurgau AG, Frauenfeld, Switzerland.
  • Studer K; Medical School Basel, University of Basel, Basel, Switzerland.
  • Valdarrabano V; Department of Orthopedics, The Royal Children's Hospital, The University of Melbourne, Melbourne, Australia.
  • Camathias C; Praxis Zeppelin, St. Gallen, Switzerland.
Arch Orthop Trauma Surg ; 143(10): 6113-6116, 2023 Oct.
Article in En | MEDLINE | ID: mdl-37208476
ABSTRACT

INTRODUCTION:

Most classification systems for lateral discoid meniscus do not evaluate instability of the meniscal peripheral rim. Considerable variability in the prevalence of peripheral rim instability has been published, and it appears that instability is underestimated. The purpose of this study was first, to evaluate the prevalence of peripheral rim instability and its location in the symptomatic lateral discoid meniscus, and second, to investigate if patient age or type of discoid meniscus are possible risk factors for instability.

METHODS:

A cohort of 78 knees that underwent operative treatment due to symptomatic discoid lateral meniscus was analyzed retrospectively for the rate and location of peripheral rim instability.

RESULTS:

Out of the 78 knees, 57.7% (45) had a complete and 42.3% (33) had an incomplete lateral meniscus. The prevalence of peripheral rim instability in symptomatic lateral discoid menisci was 51.3%, and with 32.5%, the anterior attachment was most commonly affected, followed by the posterior (30%) and central (10%) attachment. 27.5% of the tested menisci were unstable anteriorly and posteriorly. There was no significant difference in the prevalence of rim instability between the type of discoid menisci (complete vs. incomplete), nor was there a significant correlation for age as a risk factor for instability.

CONCLUSION:

The discoid lateral meniscus has a high prevalence and variable location of peripheral rim instability. Meniscal rim stability must be tested and addressed cautiously in all parts and in all types of discoid lateral menisci during operative treatment.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Lower Extremity Deformities, Congenital / Tibial Meniscus Injuries / Joint Diseases Type of study: Observational_studies / Prevalence_studies / Risk_factors_studies Limits: Humans Language: En Journal: Arch Orthop Trauma Surg Year: 2023 Document type: Article Affiliation country: Switzerland

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Lower Extremity Deformities, Congenital / Tibial Meniscus Injuries / Joint Diseases Type of study: Observational_studies / Prevalence_studies / Risk_factors_studies Limits: Humans Language: En Journal: Arch Orthop Trauma Surg Year: 2023 Document type: Article Affiliation country: Switzerland