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Microfracture success dependent on cartilage defect size, preoperative varus deformity
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Knee survival rate after microfracture was 88.8% at 5-year follow-up and 67.9% at 10-year follow-up, according to this study.
“When considering microfracture, surgeons must consider factors affecting survival, such as size of the cartilage defect and severity of the preoperative varus deformity,” Dae Kyung Bae, MD, and colleagues wrote in the study abstract.
Bae and colleagues examined the long-term effects of microfracture in 124 patients (134 knees). At mean 6.8-year follow-up, 51 knees underwent total knee arthroplasty, according to the abstract. Although gender, body mass index, age and the presence of meniscal lesions did not affect survival, patient knees with cartilage defects less than 2 cm² had a higher survivorship than knees with larger cartilage defects, according to the abstract. Knees with a mechanical axis greater than 25% after microfracture also showed a higher survivorship than knees with a mechanical axis less than 25%.
Disclosure: The authors have no relevant financial disclosures.
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