Abstract
We compared functional outcomes after primary hamstring-graft anterior cruciate ligament (ACL) reconstruction in patients with different body mass index (BMI) classes. Functional outcomes after ACL reconstruction were measured using the Knee Injury and Osteoarthritis Outcome Score (KOOS) and the Lysholm score. The procedures were carried out by a single surgeon between 2001 and 2009 in 2 groups of patients with different BMI classes: a normal-BMI group (BMI 18.5 to 24.9) and a high-BMI group (BMI ≥ 25), with a minimum of 2 years' follow-up. Rolimeter readings for ligament laxity as well as complications between the 2 groups were also analyzed. A total of 92 patients were reviewed, with the normal-BMI group consisting of 49 patients, whereas there were 43 patients in the high-BMI group. There were no significant differences between the groups in any of the preoperative and postoperative scores or ligament laxity. Both groups showed comparable clinically significant improvement in their postoperative scores compared with their preoperative scores. Patients in the high-BMI group had a slightly increased postoperative complication rate when compared with the normal-BMI group. Primary hamstring ACL reconstruction is an effective treatment option in patients irrespective of preoperative BMI. High BMI does not adversely affect functional outcomes as measured by the KOOS and Lysholm scores up to and at 2 years postoperatively, and these patients benefit in a manner comparable to that of patients with normal BMI. Level III, retrospective comparative study.
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