Hericourt

Patients who have experienced stroke, brain injury, spinal cord lesions, or multiple sclerosis may develop spastic muscle problems, especially in the leg muscles. This condition, called Stiff Knee Gait (SKG), causes stiffness in the leg that affects walking ability by limiting movement in the knee joint. The study evaluates the effects of Botulinum toxin (Botox®) injections in the rectus femoris muscle to reduce spasticity and improve leg motion in SKG patients, while also investigating whether these injections influence balance and risk of falls. The treatment involves injecting Botox® into the rectus femoris muscle to reduce its spasticity. Botox® works by blocking nerve signals that cause muscle stiffness, creating temporary muscle relaxation. The study compares patients' balance and walking ability before and four weeks after the Botox® injection. Functional tests used include the Time Up and Go test, Berg Balance Scale, Stair Climb and Descent test, and a falls questionnaire. No other treatments are modified during the study period. Participants will undergo clinical tests to assess their static and dynamic balance as well as walking function before the injection and once 4 weeks after. Researchers will measure the time taken to complete the Time Up and Go test as the main outcome. Additional assessments include balance scales, stair climbing times, and tracking of falls. The study aims to better understand the impact of Botox® injections on balance and fall risk in patients with SKG over a one-month timeframe.