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Incidence and risk of chondrolysis in Denmark: A nationwide population-based study

Original Research

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Authors: Christian F Christiansen, Sandra K Thygesen, Lars Pedersen

Published Date May 2010 Volume 2010:2 Pages 85 - 89
DOI: http://dx.doi.org/10.2147/CLEP.S10216

Christian F Christiansen, Sandra K Thygesen, Lars Pedersen

Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark

Background: Chondrolysis is a rare disease with destruction of cartilage of joints. Incidence and risk factors have not been studied in a formal epidemiologic population-based setting.

Methods: We used the Danish National Registry of Patients (NRP) covering all Danish hospitals to identify all cases of chondrolysis from 1994 to 2008. Incidence rates were estimated using the general population as the denominator. For each chondrolysis patient, 10 age-matched population controls were sampled for a case-control analysis. For cases and controls, we ascertained in the NRP history of diabetes, rheumatoid arthritis, orthopedic surgery, including surgery of shoulder and upper arm, injury to shoulder girdle or upper arm, and treatment with pain pump. We determined the prevalence of these risk factors in cases and controls, and computed odds ratios (OR).

Results: We identified 43 patients with chondrolysis in the 15-year study period. The incidence rate was 5.5 per 10,000,000 person-years. Diabetes was more prevalent in chondrolysis cases, compared with the 430 controls (OR = 6.7; 95% confidence intervals [CI]: 1.1–39.9). Orthopedic surgery was also associated with an increased risk of chondrolysis (OR = 28.8, 95% CI: 11.0–75.6), while previous injury was not (OR = 0.8; 95% CI: 0.1–5.9).

Conclusion: Chondrolysis was rarely diagnosed in Denmark. Diabetes and orthopedic surgery may be risk factors.

Keywords: epidemiology, surgery, incidence, risk factors








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