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© 1994 British Society for Rheumatology

research-article

OSTEOARTHRITIS OF THE KNEE FOLLOWING MENISCECTOMY

P. NEYRET*, S. T. DONELL{dagger} and H. DEJOUR*

*Service de Chirurgie Orthopédique et Traumatologique (Pr Dejour) Centre Hospitaller Lyon-Sud Lyon, France
{dagger}Institute of Orthopaedics, Royal National Orthopaedic Hospital Stanmore, Middlesex

Correspondence to: S. T. Donell, Royal National Orthopaedic Hospital Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP

The relationship between age at meniscectomy and the time to developing OA requiring an operation was studied. A total of 63 patients (7.8% of those presenting for an operation for OA) had had a previous mensicectomy. It was found that there was a strong correlation between the age at meniscectomy and the time delay (r = –0.68, P<0.0001). The equation for the regression line was y = –0.68x + 41.8, where y = the delay in years between meniscectomy and operation for OA, and x = the age at meniscectomy.

It was noted that there were two distinct populations, those ≤35 yr old with a mean delay of 26 yr (95% CI 20.8–31.4), and those >35 yr old with a mean delay of 9.8 yr (95% CI 7.5–12.2). The development of OA requiring an operation following meniscectomy depends on the age at meniscectomy and the time delay. To show an increase rate of OA following meniscectomy in a young population would require follow-up of at least 26 yr.

KEY WORDS: Osteoarthritis, Knee, Meniscectomy


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