Abstract
Purpose
The current systematic review and meta-analysis aim to pool together the incidence and risk factors of osteoarthritis following osteochondritis dissecans of the knee.
Methods
The systematic review was conducted according to PRISMA guidelines. A search was conducted using PubMed and Cochrane Library with the keywords being “knee” and “osteochondritis dissecans” or “osteochondral lesion”. All original human studies that reported the incidence or risk factors of osteoarthritis following osteochondritis dissecans of the knee were included.
Results
Nine studies with 496 patients were included. The incidence of osteoarthritis following osteochondritis dissecans is 0.39 (95% CI 0.19–0.59). Patients with a body mass index greater than 25 kg/m2 had a significantly increased risk of osteoarthritis. Fragment excision had an increased relative risk of 1.89 (95% CI 1.19–3.01) of osteoarthritis as compared to fragment preservation. Significant heterogeneity was identified when comparing between juvenile and adult osteochondritis dissecans. The size of the lesions moderated the between-study heterogeneity with regards to the incidence of osteoarthritis, with the relative risk of osteoarthritis in lesions bigger than 4 cm2 being 2.29 (95% CI 1.24–4.23). No other risk factors, including gender of the patient, location of osteochondritis dissecans, stability of osteochondritis dissecans, and surgical versus non-surgical management were significant risk factors.
Conclusion
Significant risk factors for osteoarthritis were increased body mass index and fragment excision. Probable but inconclusive risk factors were the age of the patients and the size of the osteochondritis dissecans. The gender of the patient, location of osteochondritis dissecans, the stability of osteochondritis dissecans, and surgical versus non-surgical management of osteochondritis dissecans when appropriate were not significant risk factors.
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Tan, S.H.S., Tan, B.S.W., Tham, W.Y.W. et al. The incidence and risk factors of osteoarthritis following osteochondritis dissecans of the knees: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc 29, 3096–3104 (2021). https://doi.org/10.1007/s00167-020-06365-y
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DOI: https://doi.org/10.1007/s00167-020-06365-y