A prospective study of the effect of botulinum toxin A on masseteric muscle hypertrophy with ultrasonographic and electromyographic measurement
| Autor: | Anil T. Ahuja, W. W. K. King, Edward W.H. To, A. C. F. Hui, W. S. Ho, W. K. Wong, Peter C.W. Pang |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Adult
Male medicine.medical_specialty Percutaneous Adolescent Electromyography Injections Intramuscular Muscle hypertrophy Masseter muscle Atrophy Recurrence medicine Humans Prospective Studies Botulinum Toxins Type A Prospective cohort study Ultrasonography medicine.diagnostic_test Masseter Muscle business.industry Ultrasound Hypertrophy medicine.disease Surgery Otorhinolaryngology Anesthesia Female business Intramuscular injection |
| Zdroj: | British Journal of Plastic Surgery. 54:197-200 |
| ISSN: | 0007-1226 |
| DOI: | 10.1054/bjps.2000.3526 |
| Popis: | We evaluated the effect of botulinum toxin A on masseteric muscle hypertrophy by using ultrasound and electromyography. Five patients (four with bilateral and one with unilateral masseteric muscle hypertrophy) were studied prospectively. In each patient, ultrasound-guided percutaneous intramuscular injection of botulinum toxin A was carried out. The change in muscle bulk was evaluated using serial ultrasonography and the electrical activity was assessed with electromyography. All five patients (nine hypertrophic muscles) showed a good response, with the maximal effect of a 31% reduction in muscle bulk seen 3 months after treatment. The effect remained stable one year after injection for six of the hypertrophic muscles, whereas three muscles needed a second injection to maintain the atrophy. This preliminary prospective study suggests that botulinum toxin A is a safe alternative method of treating masseteric muscle hypertrophy. However, the effect may be temporary and further intramuscular injection may be required to maintain atrophy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect