Lateral pterygoid muscle dystonia. A new technique for treatment with botulinum toxin guided by electromyography and arthroscopy.
Lateral pterygoid muscle dystonia is characterized by mandibular displacement towards the opposite side of the affected muscle. It may be associated with functional disorders affecting speech, swallowing, chewing and facial symmetry. Injection with botulinum toxin is recognized as the most effective treatment. Locating the lower head of the lateral pterygoid muscle for the injection is not difficult using electromyographic guidance; however, location of the upper head is more complicated, even with electromyography. We report a case of lateral pterygoid muscle dystonia in which precise injection of the upper head was achieved with the aid of arthroscopy.
Martos-Díaz
Pedro
P
Department of Maxillofacial Surgery, Hospital Universitario Nuestra Señora de la Candelaria, Tenerife, Spain. plmartos9@hotmail.com
Rodríguez-Campo
Francisco-José
FJ
Bances-del Castillo
Raquel
R
Altura-Guillén
Oscar
O
Cho-Lee
Gui-Youn
GY
Mancha-de la-Plata
María
M
Escorial-Hernandez
Veronica
V
D001182:Arthroscopy; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage*; D004421:Dystonia / Q000188:drug therapy*; D004576:Electromyography; D005260:Female; D006801:Humans; D008875:Middle Aged; D009465:Neuromuscular Agents / Q000008:administration & dosage*; D011626:Pterygoid Muscles
D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A