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MRI high-signal intensity in the menisci of asymptomatic children

Y. Takeda, MD, Instructor; T. Ikata, MD, Professor and Chairman; S. Yoshida, MD, Instructor; H. Takai, MD, Assistant Professor; and S. Kashiwaguchi, MD, Assistant Professor

Department of Orthopaedic Surgery, School of Medicine, University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770, Japan.

Correspondence should be sent to Dr Y. Takeda.

We reviewed retrospectively the MRI examinations of 108 knees of 80 children to identify the prevalence of a high signal in the menisci of those without symptoms. There were 51 boys and 29 girls with a mean age of 12.2 years (8 to 15).

The prevalence of a high signal within the menisci was 66%, significantly higher than that in an adult group (29%). The prevalence decreased with age: grade-2 and grade-3 changes were observed in 80% of menisci at ten years of age, in 65% at 13 years and in 35% at 15 years. The prevalence of high signals also decreased with increased skeletal maturity at the knee.

We emphasise the importance of awareness of the high prevalence of a high signal intensity in the menisci of children, especially in early adolescence.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General