C7 nerve root sensory distribution in peripheral nerves: a bold functional magnetic resonance imaging investigation at 9.4 T. Muscle Nerve 2014 Jan;49(1):40-6
Date
04/06/2013Pubmed ID
23558801Pubmed Central ID
PMC3966650DOI
10.1002/mus.23864Scopus ID
2-s2.0-84890438990 (requires institutional sign-in at Scopus site) 7 CitationsAbstract
INTRODUCTION: In this study we used a rat model to elucidate the linear make-up of each major nerve of the upper limb by the C7 root through sensory stimulation and functional magnetic resonance imaging (fMRI).
METHODS: The C7 nerve root and major nerves of the right forelimb were stimulated electrically. Blood oxygen level-dependent functional magnetic resonance imaging (BOLD fMRI) was performed concurrently. Voxel overlap within the primary sensory cortex was calculated.
RESULTS: C7 comprised sensation in <1% in the musculocutaneous nerve, 6% in the ulnar nerve, 16% in the radial nerve, and 19% in the median nerve (P<0.005 for each). The overlap was always <25% for each major nerve.
CONCLUSIONS: This study helps explain why C7 is a suitable donor for brachial plexus injury treatment and why there is only a transient sensory deficit after transfer.
Author List
Li R, Machol JA 4th, Liu X, Hettinger PC, Flugstad NA, Yan JG, Matloub HS, Hyde JSAuthor
Hani S. Matloub MD Professor in the Plastic Surgery department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AnimalsElectric Stimulation
Facial Nerve
Magnetic Resonance Imaging
Male
Median Nerve
Models, Animal
Peripheral Nerves
Radial Nerve
Rats
Rats, Sprague-Dawley
Somatosensory Cortex
Spinal Nerve Roots
Ulnar Nerve
