Early postoperative assessment technique: a time-to-remission technique after condylar replacement.
Inconsistencies in reports of clinical outcome occur on many levels. Using life-table techniques for remission can increase reproducibility, facilitate comparisons with other studies, and answer patient questions about rehabilitation time. The complementary rate of Kaplan-Meier's cumulative survival rate was calculated for pain and knee mobility after unicondylar and bicondylar knee replacement in osteoarthritis and rheumatoid arthritis. Pain relief was quick, often within 2 months. Eventually, >50% had attained both pain alleviation and normal mobility. The probability of regaining at least 90 degrees flexion was greater than regaining 0 degrees extension. The probability of increasing the preoperative extension capacity was higher than that of increasing the flexion capacity.
Department of Orthopedics, Stockholm Söder Hospital, Karolinska Institute, Sweden.
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D001168:Arthritis / Q000601:surgery*; D019645:Arthroplasty, Replacement, Knee; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D017063:Outcome Assessment, Health Care / Q000379:methods; D010147:Pain Measurement; D011184:Postoperative Period; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D016019:Survival Analysis