Medical decision making in patients with knee pain, meniscal tear, and osteoarthritis
Article first published online: 29 OCT 2009
Copyright © 2009 by the American College of Rheumatology
Arthritis Care & Research
Volume 61, Issue 11, pages 1531–1538, 15 November 2009
How to Cite
Suter, L. G., Fraenkel, L., Losina, E., Katz, J. N., Gomoll, A. H. and Paltiel, A. D. (2009), Medical decision making in patients with knee pain, meniscal tear, and osteoarthritis. Arthritis & Rheumatism, 61: 1531–1538. doi: 10.1002/art.24893
- Issue published online: 29 OCT 2009
- Article first published online: 29 OCT 2009
- Manuscript Accepted: 23 JUL 2009
- Manuscript Received: 15 DEC 2008
- NIH Mentored Career Development Award. Grant Number: K23-AR054095-01
- Arthritis Foundation Arthritis Investigator Award
- NIH. Grant Number: K23-AR048826
- Arthritis Foundation Innovative Research Grant
- NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases. Grant Numbers: R01-AR053112, P60-AR-47782, K24-02123, R01-AR55557, R01-AR053112, P60-AR-47782, K24-02123, R01-AR55557
Meniscal tears and osteoarthritis (OA) frequently coexist, but to our knowledge, no data exist to identify who will benefit from arthroscopic partial meniscectomy (APM) versus nonoperative management. Our objective was to evaluate the capability of preoperative information to predict APM outcomes in OA.
Using a mathematical model and published data, we combined 2 clinical (mechanical symptoms and pain pattern) and 2 magnetic resonance imaging (tear type and bone marrow lesions) indicators into 36 possible combinations and ranked each combination according to the likelihood of having primarily tear- versus OA-related pain in individuals ages 45–65 years with knee pain, OA, and meniscal tears. By considering alternative thresholds for performing APM, we identified the cutoff rank that maximized the overall population International Knee Documentation Committee (IKDC) score (0–100 scale).
Rank 1 (e.g., displaced tear, locking, increased pain, no bone marrow lesions) represented the highest likelihood of APM benefit; rank 36 (e.g., oblique tear, no mechanical symptoms, static pain, severe bone marrow lesions) represented the lowest likelihood of APM benefit. Indeterminate middle ranks included individuals with mixed findings (i.e., 2 findings consistent with high and 2 with low likelihood of APM benefit). APM thresholds between ranks 17 and 23 resulted in >82% of the population receiving treatment producing the greatest possible IKDC improvement, with mean incremental gains in IKDC score of >24 points. Findings were robust across a broad range of indicator assumptions, but were sensitive to outcome assumptions.
Among individuals with degenerative meniscal tears and OA, easily obtainable clinical information can differentiate those who are more likely to benefit from APM.