alexa A randomized trial of treatment for acute anterior cruciate ligament tears.

Sports Nutrition and Therapy

Author(s): Frobell RB, Roos EM, Roos HP, Ranstam J, Lohmander LS

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Abstract BACKGROUND: The optimal management of a torn anterior cruciate ligament (ACL) of the knee is unknown. METHODS: We conducted a randomized, controlled trial involving 121 young, active adults with acute ACL injury in which we compared two strategies: structured rehabilitation plus early ACL reconstruction and structured rehabilitation with the option of later ACL reconstruction if needed. The primary outcome was the change from baseline to 2 years in the average score on four subscales of the Knee Injury and Osteoarthritis Outcome Score (KOOS)--pain, symptoms, function in sports and recreation, and knee-related quality of life (KOOS(4); range of scores, 0 [worst] to 100 [best]). Secondary outcomes included results on all five KOOS subscales, the Medical Outcomes Study 36-Item Short-Form Health Survey, and the score on the Tegner Activity Scale. RESULTS: Of 62 subjects assigned to rehabilitation plus early ACL reconstruction, 1 did not undergo surgery. Of 59 assigned to rehabilitation plus optional delayed ACL reconstruction, 23 underwent delayed ACL reconstruction; the other 36 underwent rehabilitation alone. The absolute change in the mean KOOS(4) score from baseline to 2 years was 39.2 points for those assigned to rehabilitation plus early ACL reconstruction and 39.4 for those assigned to rehabilitation plus optional delayed reconstruction (absolute between-group difference, 0.2 points; 95\% confidence interval, -6.5 to 6.8; P=0.96 after adjustment for the baseline score). There were no significant differences between the two treatment groups with respect to secondary outcomes. Adverse events were common in both groups. The results were similar when the data were analyzed according to the treatment actually received. CONCLUSIONS: In young, active adults with acute ACL tears, a strategy of rehabilitation plus early ACL reconstruction was not superior to a strategy of rehabilitation plus optional delayed ACL reconstruction. The latter strategy substantially reduced the frequency of surgical reconstructions. (Funded by the Swedish Research Council and the Medical Faculty of Lund University and others; Current Controlled Trials number, ISRCTN84752559.) 2010 Massachusetts Medical Society This article was published in N Engl J Med and referenced in Sports Nutrition and Therapy

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