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Use of bioabsorbable nerve conduits as an adjunct to brachial plexus neurorrhaphy.
MedLine Citation:
PMID:  23021171     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
PURPOSE: The use of bioabsorbable conduits in digital nerve repair has demonstrated increased efficacy compared to direct repair (for gaps ≤ 4mm) and nerve grafting (for gaps ≥ 8 mm) for sensory recovery in a level 1 human trial. Although nonhuman primate studies on mixed motor-sensory nerves have documented comparable efficacy of the bioabsorbable nerve conduits when compared to nerve repair or grafting, there is minimal human clinical data on motor recovery following bioabsorbable nerve conduit repair. This study investigates the outcomes of bioabsorbable nerve conduits in pure motor nerve reconstruction for adult traumatic brachial plexus injuries.
METHODS: Over a 3-year period, 21 adult patients had 1 or more nerve-to-nerve transfers for traumatic brachial plexus palsy performed using the operative microscope. Ten nerve transfers were performed by advancing the nerve ends into a semi-permeable type I collagen conduit stabilized with 8-0 nylon sutures (conduit-assisted neurorrhaphy). Twenty-eight concurrent nerve transfers were performed using standard end-to-end neurorrhaphy and 8-0 or 9-0 nylon sutures. Clinical evaluation using the Medical Research Council grading system (MRC) was performed at 1 and 2 years postoperatively. Postoperative electromyographic studies were performed in 28 of 38 transfers at final follow-up.
RESULTS: Thirty transfers (17 patients) were available for 2-year follow-up evaluation. All 10 transfers performed with nerve conduits demonstrated clinical recovery and electromyographic reinnervation at 2 years. Eighteen of 20 transfers performed without conduits demonstrated clinical recovery.
CONCLUSIONS: Although no statistical difference in functional recovery was seen in nerve transfers performed with collagen nerve conduits or by traditional neurorrhaphy, this pilot series demonstrated clinical and electromyographic recovery in 10 of 10 motor nerve repairs performed using conduits. These findings warrant continued investigation into the efficacy of conduit-assisted repair for motor nerves, especially in regards to operative time, precision of repair, and speed of nerve recovery.
TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.
Authors:
Scott W Wolfe; Helene L Strauss; Rohit Garg; Joseph Feinberg
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of hand surgery     Volume:  37     ISSN:  1531-6564     ISO Abbreviation:  J Hand Surg Am     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7609631     Medline TA:  J Hand Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1980-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
Affiliation:
Hospital for Special Surgery, New York, and Weill Medical College of Cornell University, New York. Electronic address: WolfeS@HHS.edu.
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