Linking Gait Biomechanics and Daily Steps After ACL Reconstruction.
Linking Gait Biomechanics and Daily Steps After ACL Reconstruction.
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前交叉韧带重建后步态生物力学与日常步数的关联
DOI：
10.1249/mss.0000000000002860
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发表时间：
2022-05-01
影响因子：
4.1
通讯作者：
Pietrosimone, Brian G.
中科院分区：
文献类型：
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作者：
Lisee, Caroline;Davis-Wilson, Hope C.;Evans-Pickett, Alyssa;Horton, W. Zachary;Blackburn, J. Troy;Franz, Jason R.;Thoma, Louise M.;Spang, Jeffrey T.;Pietrosimone, Brian G.
Aberrant biomechanics and altered loading frequency are associated with poor knee joint health in osteoarthritis development. After ACLR, individuals demonstrate underloading (lesser vertical ground reaction force [(vGRF]) with stiffened knee gait biomechanics (lesser knee extension moment [KEM] and knee flexion angle) and take fewer daily steps as early as 6 months post-surgery. The purpose of this cross-sectional laboratory study is to compare gait biomechanics throughout stance between individuals 6-12 months post-ACLR who take the lowest, moderate, and highest daily steps. Individuals with primary, unilateral history of ACLR between the ages of 16-35 were included (n=36, 47% females, age=21±5 years, months since ACLR=8±2). Barefoot gait biomechanics of vGRF (body weight [BW]), KEM (BW x height), and knee flexion angle during stance were collected and time-normalized. Average daily steps were collected via a waist-mounted accelerometer in free-living settings over 7 days. Participants were separated into tertiles based on lowest daily steps (3,326-6,042 daily steps), moderate (6,043-8,198 daily steps), and highest (8,199-12,680 daily steps). Biomechanical outcomes of the ACLR limb during stance were compared between daily step groups using functional waveform gait analyses. There were no significant differences in sex, body mass index, age, or gait speed between daily step groups. Individuals with the lowest daily steps walk with lesser vGRF and lesser KEM during weight acceptance, and lesser knee flexion angle throughout stance in the ACLR limb compared to individuals with highest and moderate daily steps. After ACLR, individuals who take the fewest daily steps also walk with lesser vGRF during weight acceptance and a stiffened knee strategy throughout stance. These results highlight complex interactions between joint loading parameters post-ACLR.
