Total lesion of the radial nerve in the arm with preservation of the superficial radial nerve sensory action potential

Davidovich, Eduardo; Caetano, Marcelo Ribeiro; Nascimento, Osvaldo J. M.

doi:10.1590/s0004-282x2013000100016

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Pattern C may be due to anatomical variation of the paths of the radial and musculocutaneous nerves. This possibility was investigated in 3 arms showing pattern C. Absence of the superficial branch of the radial nerve and total replacement of the innervation to the dorsum of the thumb and index finger by the LAC nerve has been reported . One of the 3 pattern C arms in this series was found to have this variation (Fig.…”

Section: Discussionmentioning

confidence: 70%

A new pitfall in a sensory conduction study of the lateral antebrachial cutaneous nerve: Spread to the radial nerve

et al. 2014

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Section: Discussionmentioning

confidence: 70%

A new pitfall in a sensory conduction study of the lateral antebrachial cutaneous nerve: Spread to the radial nerve

et al. 2014

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“…The idea for this study came from the observation of a patient with a complete lesion of the radial nerve (RN), in the arm segment and preservation of the superficial radial nerve (RSN) sensory nerve action potential (SNAP). This case could be explained by an anatomic variation (Davidovich et al 2013). As anatomic variation may complicate the interpretation of nerve conduction data, we searched for a nerve conduction technique for evaluating this particular problem, but were unable to find any in the literature at that time.…”

Section: Introductionmentioning

confidence: 86%

“…This case could be explained by an anatomic variation (Davidovich et al. 2013). As anatomic variation may complicate the interpretation of nerve conduction data, we searched for a nerve conduction technique for evaluating this particular problem, but were unable to find any in the literature at that time.…”

Section: Introductionmentioning

confidence: 99%

Superficial radial nerve–lateral antebrachial cutaneous nerve anatomic variation

Davidovich

Nascimento

2013

Brain and Behavior

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IntroductionThis study focuses on an anatomic variation in which the lateral antebrachial cutaneous nerve (LACN) innervates the radial border of the dorsum of the hand and thumb in addition to, or replacing, the superficial radial nerve (RSN). Here, we propose a technique of nerve conduction that identifies this variation.MethodsWe studied nerve conduction in 200 upper limbs of two series of 50 volunteers. We sought evidence of the aforementioned variation on the dorsum of the hand and in the thumb.ResultsWe found eight occurrences of this variation on the dorsum of the hand and 11 variants on the thumb within the two respective series of 100 upper limbs studied.DiscussionThe RSN–LACN anatomic variation can be studied using nerve conduction. The knowledge of this variation is particularly important for the evaluation of proximal radial nerve injury.

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Ultrasonographic and Surgical Findings of Acute Radial Neuropathy Following Blunt Trauma

Choi

Park²,

Kim³

2016

American Journal of Physical Medicine &Amp; Rehabilitation

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Ultrasonographic study is useful for decision making of treatment for focal neuropathy with unusual electrodiagnostic findings. We present a patient with severe acute radial neuropathy with sensory sparing around the distal arm secondary to twisting of the radial nerve following blunt trauma. A 24-year-old man with a 2-week history of left wrist drop and severe pain around the left elbow presented after hitting the left distal arm on the doorknob. The left wrist and finger extensions were grade 0, but elbow extension could not be tested because of severe pain during this action. The left superficial radial sensory territory was intact. Electrodiagnostic findings suggested severe left radial neuropathy around the distal arm with sensory sparing. Ultrasonographic study demonstrated 2 stenotic lesions around the distal arm and absence of the left superficial radial sensory nerve. Surgical exploration revealed 2 stenotic lesions with twisting of the nerve, concordant with ultrasonographic study. End-to-end anastomosis was performed in the proximal lesion. Sixteen months later, wrist and finger extension was grade 3, and reinnervation signs in the radial-innervated muscles except extensor indicis muscle were observed. The complementary relationship between electrophysiologic and ultrasonographic examinations is very important for precise lesion location and decision making for treatment of peripheral nerve injury.

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Total lesion of the radial nerve in the arm with preservation of the superficial radial nerve sensory action potential

Cited by 4 publications

References 2 publications

A new pitfall in a sensory conduction study of the lateral antebrachial cutaneous nerve: Spread to the radial nerve

A new pitfall in a sensory conduction study of the lateral antebrachial cutaneous nerve: Spread to the radial nerve

Superficial radial nerve–lateral antebrachial cutaneous nerve anatomic variation

Ultrasonographic and Surgical Findings of Acute Radial Neuropathy Following Blunt Trauma

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