Central motor reorganization after anastomosis of the musculocutaneous and intercostal nerves following cervical root avulsion
| Autor: | S Tamai, Yukio Mano, Tetsuya Takayanagi, K Kawanishi, Nakamuro T, Richard F. Mayer, Ryuji Tamura |
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| Rok vydání: | 1995 |
| Předmět: |
Adult
Male Adolescent Intercostal nerves Electromyography Biceps Musculocutaneous nerve Avulsion Magnetics Surgical anastomosis Reaction Time medicine Humans Paralysis Evoked Potentials Brain Mapping medicine.diagnostic_test business.industry Muscles Anastomosis Surgical Accidents Traffic Brain Anatomy Nerve Regeneration Motor unit medicine.anatomical_structure Motorcycles Neurology Musculocutaneous Nerve Anesthesia Arm Intercostal Nerves Neurology (clinical) Spinal Nerve Roots business Motor cortex |
| Zdroj: | Annals of Neurology. 38:15-20 |
| ISSN: | 1531-8249 0364-5134 |
| Popis: | In 4 patients with a complete upper limb palsy due to traumatic cervical root avulsion, surgical anastomosis of intercostal to musculocutaneous nerves was performed to restore function in the biceps brachii muscle. Four to 6 months after the operation, motor unit discharges were recorded from the biceps muscle on the operated side during deep breathing and by cortical magnetic stimulation. The motor unit discharges became independent from respirations gradually over 1 to 2 years. The latencies of the motor potentials evoked by cortical and thoracic root magnetic stimulation decreased gradually over 2 to 3 years. Motor cortex mapping of the reinnervated biceps muscle showed a gradual change over 4 to 33 months from the area of the intercostal muscles to that of the arm area, which was more lateral on the motor cortex. These findings suggest that reorganization of the motor cortex to arm flexor muscles occurs following peripheral nerve anastomosis. |
| Databáze: | OpenAIRE |
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