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Sinquinesis óculomotora: dos casos de pacientes excepcionales / Oculomotor synkinesis: two cases excepcional patients
Muci-Mendoza, Rafael.
  • Muci-Mendoza, Rafael; Academia Nacional de Medicina. Caracas. VE
Gac. méd. Caracas ; 120(3): 218-224, jul.-sept. 2012. ilus
Article in Spanish | LILACS | ID: lil-706243
RESUMEN
Las sinquinesis son movimientos simultáneos o coordinados en secuencia de mivimientos de músculos suplidos por diferentes nervios o por ramas independientes del mismo nervio que ocurren luego de la recuperación de una lesión axonal periferica; son debidos a la dirección errónea ("misdirection") que toman algunos axones hacia otros músculos que no constituyen su objetivo o blanco; así, cuando el paciente intenta mover algunos músculos, ocurren contracciones involuntarias en otros, no esperadas anatómicamente. Es una suerte de recableado mal realizado y confuso. En las dos pacientes que constituyen nuestro informe, ocurrieron alteraciones óculomotoras excepcionales. En la primera de 60 años portadora de un aneurisma gigante del senocavernoso izquierdo, la sinquinesis nerviosa aberrante ocurrió entre los nervios craneales tercero y sexto. En la segunda de 22 años a quien se resecó un osteocondroma gigante de la fosa media derecha, desarrolló una parálisis total del tercer nerviocraneal con sinquinesis trigémino-oculomotora entre el músculo pterigoideo derecho y el elevador del párpado superior; así como también entre el tercero (recto inferior) y sexto nervios (recto externo) ipsolateral. Se revisa la literatura al respecto.
ABSTRACT
Synkinesis are simultaneous or coordinated sequential movements of muscles that are supplied by different nerves or have independent nerve branches. They occur after the recovery a peripheral axonal injury. They are due to axons taking a wrong direction ("misdirection") towards muscles that do not constitute their objetives or targets. Thus, when the patient attempts to move a muscle, other muscles show anatomically unexpected involuntary contractions. It is a sort of confusing rewiring. Our report is based on the exceptional oculomotor alterations that occurred in two patients. In the first patient, a 60 years-old female carrying a giant aneurysm of the left cavernous sinus, the aberrant nerve synkinesis ocurred between the third and sixth cranial nerves. In the second patient, a 22 year-old female to whom was resected a giant osteochondroma of the right middle fossa, developed a total paralysis of the third cranial nerve with trigeminal oculomotor synkinesis between the right pterygoid muscle and the elevator of the upper eyelid; as well as between the inferior rectus and ipsilateral external rectus. We review the literature on the subject.
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Index: LILACS (Americas) Main subject: Axons / Blepharoptosis / Osteochondroma / Facial Muscles / Oculomotor Nerve Injuries / Nervous System Diseases Limits: Aged / Female / Humans Language: Spanish Journal: Gac. méd. Caracas Journal subject: Medicine Year: 2012 Type: Article Affiliation country: Venezuela Institution/Affiliation country: Academia Nacional de Medicina/VE

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Index: LILACS (Americas) Main subject: Axons / Blepharoptosis / Osteochondroma / Facial Muscles / Oculomotor Nerve Injuries / Nervous System Diseases Limits: Aged / Female / Humans Language: Spanish Journal: Gac. méd. Caracas Journal subject: Medicine Year: 2012 Type: Article Affiliation country: Venezuela Institution/Affiliation country: Academia Nacional de Medicina/VE