Peripheral Nerve Ultrasound and Short-Segment Nerve Conduction Studies Before and After Ulnar Nerve Decompression

2016 ◽  
Vol 35 (6) ◽  
pp. 1367-1368
Author(s):  
Jonathan K. Smith ◽  
Matthew E. Miller ◽  
David E. Reece ◽  
Yin-Ting Chen ◽  
Mark E. Landau
Keyword(s):  
Peripheral Nerve ◽  
Ulnar Nerve ◽  
Nerve Conduction ◽  
Nerve Conduction Studies ◽  
Nerve Ultrasound ◽  
Short Segment ◽  
Nerve Decompression ◽  
Before And After

scholarly journals Pearls & Oy-sters: False positives in short-segment nerve conduction studies due to ulnar nerve dislocation

Neurology ◽  
2008 ◽  
Vol 70 (3) ◽  
pp. e9-e13 ◽  
Author(s):  
B. J. Kim ◽  
S. B. Koh ◽  
K. W. Park ◽  
S. J. Kim ◽  
J. S. Yoon
Keyword(s):  
Ulnar Nerve ◽  
Nerve Conduction ◽  
False Positives ◽  
Nerve Conduction Studies ◽  
Short Segment

Neurophysiological assessments for peripheral nerve injury

2021 ◽  
pp. 261-263
Author(s):  
Arup Mallik
Keyword(s):  
Peripheral Nerve ◽  
Nerve Injury ◽  
Nerve Conduction ◽  
Peripheral Nerve Injury ◽  
Nerve Conduction Studies ◽  
Anatomical Distribution

Neurophysiology is a useful investigation to assess peripheral nerve injury. It consists of nerve conduction studies and electromyography, providing information on anatomical distribution of the lesion (pre/postganglionic, single/multiple nerves), whether the lesion is primarily demyelinating or axonal, and whether the lesion is in continuity, as well as the overall prognosis.

The effect of in-situ decompression on ulnar nerve stability: a cadaveric study

2017 ◽  
Vol 42 (7) ◽  
pp. 715-719 ◽  
Author(s):  
B. Butler ◽  
J. Peelman ◽  
L.-Q. Zhang ◽  
M. Kwasny ◽  
D. Nagle
Keyword(s):  
Ulnar Nerve ◽  
Medial Epicondyle ◽  
Cadaveric Study ◽  
Flexion Angle ◽  
Anterior Translation ◽  
Nerve Decompression ◽  
Flexor Carpi Ulnaris ◽  
Before And After ◽  
Fresh Frozen

Ten fresh frozen right cadaver arms were placed in a motorized jig and an in-situ ulnar nerve decompression was performed in 5 mm increments distally to the flexor carpi ulnaris (FCU) aponeurosis then proximally to the intermuscular septum. The elbows were ranged 0–135° after each incremental decompression and the ulnar nerve to medial epicodyle distance was measured to assess for nerve translation/subluxation compared with baseline (prerelease) values. None of the specimens had ulnar nerve subluxation (defined as anterior translation past the medial epicondyle) even after full decompression. Furthermore, there were no statistically significant ulnar nerve translations (defined as any difference in distance from ulnar nerve to medial epicondyle before and after each decompression) for any flexion angle or extent of decompression. This study provides biomechanical evidence that in situ ulnar nerve decompression from the FCU aponeurosis to the intermuscular septum does not result in significant ulnar nerve translation or subluxation.

Electrodiagnostic Findings in Neuromuscular Disorders

2018 ◽  
Author(s):  
Bashar Katirji
Keyword(s):  
Neuromuscular Junction ◽  
Peripheral Nerve ◽  
Myasthenia Gravis ◽  
Nerve Conduction ◽  
Neuromuscular Disorders ◽  
Nerve Conduction Studies ◽  
Anterior Horn Cell ◽  
Peripheral Neuropathies ◽  
Peripheral Nerve Lesions ◽  
Myasthenic Syndrome

Neuromuscular disorders are often classified into four major categories: anterior horn cell disorders, peripheral neuropathies, neuromuscular junction disorders and myopathies. This chapter discusses the electrodiagnostic and clinical EMG findings in these various neuromuscular disorders. Peripheral neuropathies are subdivided into focal mononeuropathies, radiculopathies, plexopathies and generalized peripheral polyneuropathies. Focal peripheral nerve lesions and generalized peripheral polyneuropathies may be axonal or demyelinating, and manifest quite distinctly on nerve conduction studies. Neuromuscular junction disorders may be presynaptic, as seen with the Lambert-Eaton myasthenic syndrome, or postsynaptic, as seen with myasthenia gravis.

Use of Nerve Conduction Studies and the Pressure-Specified Sensory Device in the Diagnosis of Carpal Tunnel Syndrome

2009 ◽  
Vol 34 (1) ◽  
pp. 60-65 ◽  
Author(s):  
D. J. SLUTSKY
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Nerve Conduction ◽  
Diagnostic Yield ◽  
Carpal Tunnel Release ◽  
Nerve Conduction Studies ◽  
Control Group ◽  
Asymptomatic Volunteers ◽  
Before And After ◽  
Tunnel Syndrome

Sixty-nine patients with signs of carpal tunnel syndrome (CTS) underwent nerve conduction studies (NCS) and testing with the Pressure-Specified Sensory Device (PSSD). A total of 102 tests were performed (28 bilateral). Twenty patients underwent a carpal tunnel release and were retested after 4 to 6 months. The Symptom Severity Score (SSS) was calculated before and after surgery. A control group of 20 hands in 10 asymptomatic volunteers underwent identical testing. The NCS sensitivity was 87% with a specificity of 90% whereas the PSSD sensitivity was 81% with a specificity of 65%. The combined sensitivity of the two tests was 93%. In the operative group the SSS improved from a mean of 3.34 pre-operatively to 1.95 postoperatively. The NCS improved in 19/21 hands whereas the PSSD improved in 16/19 hands. The non-invasive SSS and PSSD can increase the diagnostic yield in CTS, especially when the NCS are normal.

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