Balance training may help ACL patients walk better

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adults aged 18-40 years who have undergone primary unilateral anterior cruciate ligament reconstruction (ACLR) using an autograft. * At least 3 weeks postoperatively and currently engaged in the early-stage rehabilitation phase following ACLR. * Demonstrate near-full passive knee extension (≤ 5° loss) and at least 90° of passive knee flexion in the operated limb. * Able to walk independently without assistive devices and perform basic functional tasks (e.g., normal walking, single-leg stance). * No prior surgery or major injury to the contralateral knee or other lower limb joints. * No neurological, vestibular, or systemic conditions affecting proprioception, motor control, or physical performance. * Not currently participating in any structured proprioceptive or neuromuscular training programs. * Willing and able to comply with the intervention protocol and follow-up, and able to provide written informed consent. Exclusion Criteria: * History of revision anterior cruciate ligament surgery, bilateral ACLR, or concurrent reconstruction of other knee ligaments (e.g., posterior cruciate ligament, medial collateral ligament, lateral collateral ligament) in the affected knee. * Meniscal repair or other intra-articular procedures that restrict knee range of motion beyond 3 weeks postoperatively. * Diagnosed osteoarthritis, rheumatoid arthritis, or other chronic joint diseases affecting the lower limbs. * Significant injury, surgery, or persistent pain in the contralateral knee, hip, ankle, or spine that could interfere with training or gait. * History or current diagnosis of neurological disorders (e.g., stroke, multiple sclerosis, Parkinson's disease) or vestibular dysfunction. * Any cardiopulmonary or systemic condition that contraindicates structured physical exercise. * Participation in other structured rehabilitation or proprioceptive training programs within the past 3 weeks. * Cognitive impairment or psychiatric conditions that may interfere with understanding instructions or complying with the protocol.