The clinical presentation and MRI are consistent with an asymptomatic lateral discoid meniscus without evidence of tear. No intervention is indicated for asymptomatic discoid menisci. When these are symptomatic, surgical saucerization and possible repair are indicated. Klingele et al reviewed a series of 112 surgically treated patients and found that 28% were unstable, and 69% had an associated meniscus tear. Ogut et al reported their follow-up on 11 surgically treated discoid mensici, and had 82% excellent results and 18% good results. Davidson et al reported their results in 32 children who underwent partial, complete or no excision of the discoid meniscus, with 16 excellent, 10 good, 6 fair and 4 poor results.
Klingele KE, Kocher MS, Hresko MT, Gerbino P, Micheli LJ. Discoid lateral meniscus: prevalence of peripheral rim instability. J Pediatr Orthop. 2004 Jan-Feb;24(1):79-82.
PMID:14676539 (Link to Abstract)
Davidson D, Letts M, Glasgow R. Discoid meniscus in children: treatment and outcome. Can J Surg. 2003 Oct;46(5):350-8.
PMID:14577707 (Link to Abstract)
Ogüt T, Kesmezacar H, Akgün I, Cansü E. Arthroscopic meniscectomy for discoid lateral meniscus in children and adolescents: 4.5 year follow-up. J Pediatr Orthop B. 2003 Nov;12(6):390-7.
PMID:14530697 (Link to Abstract)