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    Superior 2-Year Functional Outcomes Among Young Female Athletes After ACL Reconstruction in 10 Return-to-Sport Training Sessions Comparison of ACL-SPORTS Randomized Controlled Trial With Delaware-Oslo and MOON Cohorts

    Capin, Jacob J.
    Failla, Mathew
    Zarzycki, Ryan
    Dix, Celeste
    Johnson, Jessica L.
    Smith, Angela H.
    Risberg, May Arna
    Huston, Laura J.
    Spindler, Kurt P.
    Snyder-Mackler, Lynn
    : http://hdl.handle.net/1803/16178
    : 2019-08-01

    Abstract

    Background: Outcomes after anterior cruciate ligament reconstruction (ACLR) are not uniformly good and are worse among young female athletes. Developing better rehabilitation and return-to-sport training programs and evaluating their outcomes are essential. Purpose: (1) Test the effect of strength, agility, plyometric, and secondary prevention (SAPP) exercises with and without perturbation training (SAPP - PERT) on strength, hops, function, activity levels, and return-to-sport rates in young female athletes 1 and 2 years after ACLR and (2) compare 2-year functional outcomes and activity levels among young female athletes in the Anterior Cruciate Ligament Specialized PostOperative Return-to-Sports (ACL-SPORTS) trial to homogeneous cohorts who completed criterion-based postoperative rehabilitation alone (Multicenter Orthopaedic Outcomes Network [MOON)) and in combination with extended preoperative rehabilitation (Delaware-Oslo). Study Design: Randomized controlled trial, Level of evidence, 1; and cohort study, Level of evidence, 3. Methods: A total of 40 level 1 and level 2 female athletes were enrolled after postoperative impairment resolution 3 to 9 months after primary ACLR. Participants were randomized to 10 SAPP or SAPP - PERT sessions and were tested 1 and 2 years after ACLR on quadriceps strength, hop tests, functional outcomes, and return-to-sport rates. Participants were then compared with homogeneous cohorts of young (<25 years) female athletes who completed criterion-based postoperative rehabilitation alone (MOON) and in combination with extended preoperative rehabilitation (Delaware-Oslo) on 2-year functional outcomes. Results: No significant or meaningful differences were found between SAPP and SAPP + PERT, so groups were collapsed for comparison with the other cohorts. At 2-year follow-up, ACL-SPORTS had the highest scores (P < .01) on the Marx activity rating scale (ACL-SPORTS, 13.5 +/- 3.3; Delaware-Oslo, 12.5 +/- 2.7; MOON, 10.6 = 5.1); International Knee Documentation Committee Subjective Knee Evaluation Form (96 +/- 7, 92 +/- 9, and 84 = 14, respectively); and Knee injury and Osteoarthritis Outcome Score (KOOS) subscales for Pain (98 = 4, 94 = 9, and 90 +/- 10, respectively), Symptoms (94 +/- 6, 90 +/- 9, and 83 +/- 14, respectively), Activities of Daily Living (100 +/- 1, 99 = 4, and 96 +/- 7, respectively), Sports and Recreation (94 +/- 8, 86 +/- 15, and 82 = 17, respectively), and Quality of Life (89 +/- 14, 78 = 18, and 76 = 19, respectively). The Patient Acceptable Symptom State threshold on the KOOS-Sports and Recreation was achieved by 100% of the ACL-SPORTS cohort compared with 90% of Delaware-Oslo and 78% of MOON (P = .011). Conclusion: Although perturbation training provided no added benefit, 10 sessions of return-to-sport training, compared with criterion-based postoperative rehabilitation alone, yielded statistically significant and clinically meaningfully higher 2-year functional outcomes among young, high-level female athletes after ACLR.
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