Tıp Fakültesi / Faculty of Medicine

Permanent URI for this collectionhttps://hdl.handle.net/11727/1403

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2017 - 20182

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Subject: search.filters.subject.Electromyography

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    A Comparison of Magnetic Resonance Imaging and Electroneuromyography for Denervated Muscle Diagnosis
    (2017) Tepeli, Betul; Karatas, Metin; Coskun, Mehmet; Yemisci, Oya Umit; https://orcid.org/0000-0002-0501-5127; 27893494; AAJ-8820-2021
    Purpose: The aim of this study was to evaluate the diagnostic value of magnetic resonance imaging (MRI) for muscle denervation due to focal lesions of the median nerve and to compare electrophysiological findings with MRI findings. Methods: Twenty-six patients with electrophysiological studies diagnosed for focal lesions of the median nerve were included in this study. Electrophysiological studies and MRI were conducted on 34 patients' hands. Patients' hands were divided into two groups based on edema findings revealed by the MRI: group 1 (edema-negative group; n = 24) and group 2 (edema-positive group; n = 10). Results: Positive correlations were found between the existence of edema in MRI and fibrillation, positive sharp waves, denervation, and the level of reduced recruitment pattern. In median nerve conduction studies, amplitude of compound muscle action potential and palm-to-wrist segment mixed-nerve action potentials were significantly lower, and also the third-digit wrist sensory nerve conduction velocity and mixed-nerve palm-wrist conduction velocity were significantly slower in group 2. Conclusions: For muscle denervation resulting from median nerve lesions, MRI findings correlated with electrophysiological findings; further study is required for the use of MRI.
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    Case of an Unusual Suprascapular Neuropathy: Case Report and Literature Review
    (2018) Afsar, Sevgi Ilkbali; Karatas, Metin
    Suprascapular neuropathy is a rare cause of shoulder pain and muscle weakness. Common causes include space-occupying lesions such as paralabral cysts, soft tissue or bone tumors, recurrent overhead activities in athletes, direct trauma, fractures of the scapula and iatrogenic causes. Diagnosis of suprascapular neuropathy can be difficult due to overlap in the clinical presentation with cervical region and other pathologies of the shoulder. We present a 33-year-old male patient admitted to our clinic with complaints of left shoulder pain and arm weakness starting in 8 months ago. The clinical and electrophysiological evaluations confirmed the left suprascapular nerve lesion at suprascapular notch level. This case is presented to emphasize that suprascapular neuropathy should keep in mind in the differential diagnosis of shoulder pain also without of a mass, trauma or excessive physical activity that may cause the neuropathy.