The muscles most often injected with botulinum toxin
| Muscles | Per cent of total number of injections | Standardised dose of botulinum toxin | |
|---|---|---|---|
| Doses are expressed as IU Dysport (500 U/2.5 ml). | |||
| Pectoralis major, dorsal muscles, adductor pollici, and abductor pollici brevis were injected occasionally. | |||
| Flexion of the wrist | Flexor carpi ulnaris | 13% | 80 U |
| Flexor carpi radialis | 12% | 80 U | |
| Pronation of the forearm | Pronator teres | 11% | 60 U |
| Pronator quadratus | 3% | 40 U | |
| Extension of the wrist | Extensor carpi radialis | 6% | 70 U |
| Supination of the forearm | Supinator | 5% | 70 U |
| Forced flexion of the thumb and index finger | Flexor pollicis longus | 7% | 50 U |
| Flexion of the fingers (or selective flexion of one finger, for example the index finger) | Flexor digitorum superficialis | 4% | 70 U |
| Flexor digitorum profundus | 7% | 70 U | |
| Extension of the thumb and index finger | Extensor pollicis | 6% | 40 U |
| Extensor indici | 5% | 40 U | |
| Extension of the fingers (or selective extension of one finger) | Extensor digitorum communis and extensor digiti mini | 2% | 50 U |
| Shoulder elevation | Deltoid | 6% | 100 U |
| Levator scapulae | 4% | 160 U | |
| Supraspinatus | 4% | 120 U | |