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May 1, 1996

Botulinum toxin type A in the treatment of upper extremity spasticity
A randomized, double‐blind, placebo‐controlled trial

May 1996 issue
46 (5) 1306

Abstract

Spasticity is a disorder of excess muscle tone associated with CNS disease. We hypothesized that botulinum toxin, a neuromuscular blocking agent, would reduce tone in spastic muscles after stroke. This randomized, double-blind, placebo-controlled, multicenter clinical trial evaluated the safety and efficacy of botulinum toxin type A (BTXA) in the treatment of chronic upper limb spasticity after stroke. Thirty-nine patients received IM injections of a total dose of either 75, 150, or 300 units of BTXA or placebo into the biceps, flexor carpi radialis, and flexor carpi ulnaris muscles. At baseline, patients demonstrated a mean wrist flexor tone of 2.9 and elbow flexor tone of 2.6 on the Ashworth Scale (0 to 4). Treatment with the 300-unit BTXA dose resulted in a statistically and clinically significant mean decrease in wrist flexor tone of 1.2 (p = 0.028), 1.1 (p = 0.044), and 1.2 (p = 0.026) points and elbow flexor tone of 1.2 (p = 0.024), 1.2 (p = 0.028), and 1.1 (p = 0.199) at weeks 2, 4, and 6 postinjection. In the placebo group, tone reduction at the wrist was 0.3, 0.2, and 0.0 and at the elbow was 0.3,0.3, and 0.6 at weeks 2, 4, and 6 postinjection. BTXA groups reported significant improvement on the physician and patient Global Assessment of Response to Treatment at weeks 4 and 6 postinjection. There were no serious adverse effects. In this 3-month study, BTXA safely reduced upper extremity muscle tone in patients with chronic spasticity after stroke.

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Information & Authors

Information

Published In

Neurology®
Volume 46Number 5May 1996
Pages: 1306
PubMed: 8628472

Publication History

Published online: May 1, 1996
Published in print: May 1996

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Authors

Affiliations & Disclosures

Department of Neurology, The Mount Sinai Medical Center, New York, New York (Dr. Simpson) (Dr. Tagliati)
Daniel Freeman Memorial Hospital and UCLA School of Medicine, Los Angeles, CA (Dr. Alexander)
Movement Disorders Center, The Colorado Neurological Institute, Englewood, CO (Dr. O'Brien)
Allergan, Inc., Irvine, CA. (Dr. Aswad) (Dr. Leon) (Dr. Gibson) (Dr. Mordaunt) (Dr. Monaghan)

Notes

Address correspondence and reprint requests to Dr Simpson, Department of Neurology, Mount Sinai Hospital, Box 1052, One Gustave Levy place, New York, NY 10029.

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Cited By
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  3. Botulinum toxin for motor disorders, Motor System Disorders, Part II: Spinal Cord, Neurodegenerative, and Cerebral Disorders and Treatment, (539-555), (2023).https://doi.org/10.1016/B978-0-323-98817-9.00003-X
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  7. Time course response after single injection of botulinum toxin to treat spasticity after stroke: Systematic review with pharmacodynamic model-based meta-analysis, Annals of Physical and Rehabilitation Medicine, 65, 3, (101579), (2022).https://doi.org/10.1016/j.rehab.2021.101579
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  9. Shortening wrist arthrodesis using a Rush pin in adult spastic wrist: A series of 15 cases, Hand Surgery and Rehabilitation, 41, 1, (48-53), (2022).https://doi.org/10.1016/j.hansur.2021.09.011
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