This prospective longitudinal observational cohort study will characterize recovery of donor-ankle sensorimotor function in adults who have undergone primary anterior cruciate ligament reconstruction using a peroneus longus tendon autograft. Twenty participants aged 18 to 55 years will be evaluated at postoperative 6-8 weeks, 3 months, and 6 months. The donor limb and the contralateral non-donor limb will be compared using surface electromyography of the peroneus longus, force-platform measures of postural control, inertial-sensor gait analysis, active ankle joint-position sense testing, and clinical and patient-reported foot and ankle function measures. The study does not assign the surgical procedure or rehabilitation treatment.
Age 18 to 55 years.
Unilateral primary anterior cruciate ligament tear confirmed by clinical examination and magnetic resonance imaging.
Primary anterior cruciate ligament reconstruction performed using a peroneus longus tendon autograft.
Able and willing to attend the postoperative assessments at 6-8 weeks, 3 months, and 6 months.
Multiligament knee injury.
Previous surgery on the index knee or donor ankle.
Pre-existing ankle instability or major foot or ankle pathology.
Neurological or neuromuscular disease.