J Korean Orthop Assoc.  2001 Dec;36(6):555-560.

Results of Microfracture Surgery in Osteoarthritic Knee

  • 1Department of Orthopaedic Surgery, School of Medicine, Kyung Hee University, Seoul, Korea.


To analyze factors influencing clinical results after microfracture surgery in patients with osteoarthritic knee.
After microfracture surgery, in sixty-six patients with sixty-eight knees having full thickness chondral defect by arthroscopic evaluation, clinical results were evaluated with Baumgartner's nine-point scale during the follow-up of 1 year 4 months (range, 1-2 years 5 months). Results were analyzed according to age, the degree of preoperative varus and the existence of flexion contracture.
Sixty-three knees showed excellent or good results at clinical evaluation. According to age, a significant difference was observed about 65 years old (p<0.05). The patients without flexion contracture and with less varus change had better clinical results, as did patients whose medial deviation of mechanical axis was less than 75% (p<0.05).
Better clinical results, after microfracture surgery, were obtained in patients who were under the age of 65, with less than 75% of medial deviation of the mechanical axis on standing AP radiogram and no flexion contracture.


Knee; Osteoarthritis; Microfracture
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