[Botulinum toxin A in orthopedic pain therapy].

Botulinum toxin A (BTX A) has been used for more than 20 years as a safe and effective treatment for numerous diseases characterized by pathological muscle hypertension. In patients suffering from dystonia or spasticity, it has been observed that use of BTX A results not only in muscle relaxation but also frequently relieves associated pain. This pain relief is often seen earlier and to a much greater extent than the muscular relaxation itself. This has led to extending the use of BTX A to treat various focal pain syndromes. The results of initial studies in specific musculoskeletal pain therapy suggest that BTX A infiltrations are effective in the treatment of chronic, therapy-resistant pain of the shoulder and back region. Furthermore, BTX A has been found to be a less invasive option for the treatment of chronic epicondylitis and similar tendonitis conditions. The healing process following rupture of tendons or muscle transfer operations may be improved. In adults with increased muscle tone and endoprostheses, the targeted relaxation of spastic muscles might increase the lifetime of the implant and diminish aseptic loosening. In children with cerebral palsy, prophylactic treatment of hip luxation appears possible. The doses used in pain therapy are low; if correctly applied, the tolerance and safety are high and the effect lasts for a number of weeks.