... 1Botulinum toxin injection points. Illustration of the loca-tions of the botulinum toxin injections into the adductor, tensor fascia lata, and rectus femoris muscles.BioMed CentralPage 1 of ... degrees of flexion at one monthfollow-up. At six weeks after surgery, the patient wasinjected with 200 units of botulinum toxin type A in the long head of the biceps femoris and the semitendinosusmuscle, ... injection, in a lateralposition for the injection of the tensor fascia lata muscle,and in a supine position for injection of the rectus femorismuscle. The injections were performed using a 23...