Correlation between lower limb biomechanics during single-leg landing and hip joint muscle strength in patients with anterior cruciate ligament reconstruction

• Two years after anterior cruciate ligament reconstruction, muscle strength on the surgical side had not recovered to the level of the healthy side, possibly due to neural inhibition. • Patients adopted a buffering strategy recruiting hip joint muscle strength to actively reduce vertical ground reaction force during single-leg landing. • The smaller hip abduction moment peak on the surgical side reduced knee joint stability in the coronal plane. • Continued hip and knee muscle strength training, especially hip abduction, extension, and knee flexion, extension, is recommended for at least 2 years post-surgery.