Preoperative and postoperative dynamic gait electromyography (EMG) weas performed on 15 patients 8 to 13 year of age with Duchenne's muscular dystrophy who underwent Achilles tendon lengthening and posterior tibial tendon transfer anteriorly through the interosseous ligament for correction of equinus and equinovarus foot deformities. The muscles tested preoperatively (anterior tibial, soleus, gastrocnemius, posterior tibial, peroneal longus, and peroneal brevis) showed phase changes. It is believed that patients with weakened leg muscles fire multiple muscle groups out of phase in an attempt to overcome the action of the stronger muscles, thus stabilizing the limb for ambulation. Postoperative EMGs, performed with the patients walking in long leg braces after the deformity had been corrected, showed little activity in the muscles tested. As the patients became dependent on the brace, the need for the muscles to be active out of phase was eliminated. The transferred posterior tibial muscle appeared to be active both clinically and electromyographically.
SUMMARY
Electromyographic studies were performed on 13 patients with cerebral palsy before and after flexor carpi ulnaris transfers. No changes in activity of the extensor digit communis were noted in the transferred muscles. This further validates the rationale of pre‐operative planning based on such studies.
RÉSUMÉ
Fonction électromyographique post‐opératoire aprés transfert tendineux dans l'IMC
Des études électromyographiques ont été réalisées chez 13 IMC avant et après transfert du cubital antérieur. Aucune modification dans l'activité de l'extenseur commun des doigts n'a été observée au niveau des muscles transfèreś. Cela valide la reflexion sur la prévision pré‐opératoire à partir de telles études.
ZUSAMMENFASSUNG
Postoperative elektromyographische Funktion nach Sehnenverlagerung bei Cerebralparese
Bei 13 Patienten mit Cerebralparese wurden vor und nach der Verlagerung des Flexor carpi ulnaris elektromyographische Untersuchungun durchgeführt. In den verlagerten Muskeln wurden keine Aktivitätsveränderungen des Extensor digit communis festgestellt. Dies unterstreicht erneut den Sinn einer präoperativen Planung anhand solcher Studien.
RESUMEN
Función electromiográfica postoperatoria después de transposition tendinosa en la paralisis cerebral Se realizaron estudies EMG en 13 pacientes con parálisis cerebral antes y después de una transposiciòn del flexor cubital del carpo. No se observó ningún cambio en la actividad del extensor común de los dedos en los músculos transferidos. Esto da más valor a la planificación racional preoperatoria basada en tales estudios.
A large New England family with autosomal dominant familial spastic paraplegia is described. In a pedigree of 173 individuals, 71 affected individuals are identified. Seventeen cases examined by the authors are described with regard to the natural history of FSP in this family. A staging system for following progress and planning interventions is proposed. Three illustrative cases are presented. In this family, FSP is found to have a homogeneous clinical course with nearly complete penetrance. Onset occurs at or before 3 years of age with involvement limited to the lower extremities. After the initial onset, no significant progression was noted. Early aggressive habilitative care may result in more functional ambulation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.