Dai Sugimoto Ph.D., A.T.C. , Matthew D. Milewski M.D. , Kathryn A. Williams M.S. , Ryan P. Coene M.S. , Kianna D. Nunally B.A. , Mininder S. Kocher M.D., M.P.H. , Dennis E. Kramer M.D. , Lyle J. Micheli M.D. , Yi-Meng Yen M.D., Ph.D. , Melissa A. Christino M.D.
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Abstract
Purpose
To examine age- and sex-related differences in postoperative functional outcomes at approximately 6 months after anterior cruciate ligament reconstruction (ACLR).
Methods
In this study, patients who underwent primary ACLR performed a series of return-to-sport functional tests at 5 to 8 months after surgery. Functional tests included strength tests (knee extensors, knee flexors, hip abductors, and hip extensors), a balance test (Y-balance composite score), and hop tests (single, triple, crossover, and 6-m timed hop tests). Limb symmetry was calculated to compare the reconstructed limb with the uninvolved limb. A 2-way multivariate analysis of covariance was used, and effect size was calculated for data analysis.
Results
A total of 176 subjects were included in this study. There were no significant interaction between age and sex on return-to-sport functional tests after ACLR. Also, no main effects of age and sex on return-to-sport functional tests were found in our data.
Conclusions
Age and sex do not significantly affect functional test performance after ACLR 6 months postoperatively.
Level of Evidence
Level III, retrospective review of prospective cohort study.