Early injection treatment to prevent shoulder problems in babies with birth nerve injury

This trial is testing whether botulinum toxin type A injections given at 12 months of age can prevent shoulder deformity in babies born with obstetrical brachial plexus palsy, a nerve injury that affects arm movement. The medication works by relaxing the muscles that pull the shoulder inward, which helps prevent long-term damage to the shoulder joint. Half of the babies will receive the real injection, and half will receive a simulated procedure so researchers can fairly measure how well this treatment works.

Babies born with this nerve injury often develop shoulder problems as they grow, including pain, limited movement, and difficulty with everyday activities. Early studies suggest this medication may prevent these problems from developing, but doctors need to confirm whether it truly works and is safe.