Search results for "Ulnar nerve"
showing 10 items of 23 documents
Transthyretin familial amyloid polyneuropathy (TTR‐FAP): Parameters for early diagnosis
2017
Abstract Background Familial transthyretin amyloidosis is a life‐threatening disease presenting with sensorimotor and autonomic polyneuropathy. Delayed diagnosis has a detrimental effect on treatment and prognosis. To facilitate diagnosis, we analyzed data patterns of patients with transthyretin familial amyloid polyneuropathy (TTR‐FAP) and compared them to polyneuropathies of different etiology for clinical and electrophysiological discriminators. Methods Twenty‐four patients with TTR‐FAP and 48 patients with diabetic polyneuropathy (dPNP) were investigated (neurological impairment score NIS; neurological disability score NDS) in a cross‐sectional design. Both groups were matched for gende…
Tuberculoid leprosy and Type 1 lepra reaction.
2008
Summary A patient is described with tuberculoid leprosy and Type 1 (lepra) reaction from Sicily a non-endemic region, who lived previously in Manila from 2000 to 2005. The skin lesions became acutely inflamed and edematous. The plaques were painless to touch or pinprick, and there was swelling of the nerves in the fibro-osseous tunnels under the surface of the skin, including both the ulnar nerve at the elbow, and the posterior tibial nerve (medial malleolus). During the course of electro-neurographic studies, conduction velocity in the motory nerves indicated a slowing-down. The diagnosis of leprosy was confirmed by residence in an endemic area for about 5 years, by simultaneous skin lesio…
Analysis of F response in upper motoneurone lesions
2009
The F response can provide a measure of motoneurone excitability (MNE) and so it may be used to investigate upper motoneurone disorders. This report studies the F-wave configuration in patients with stroke to evaluate the changes of the central excitability of the motoneurones at different times after an acute cerebral insult. Various parameters of the F response, including amplitude (absolute and F%/M), duration, and persistence have been determined in 26 patients with unilateral hemiplegia and in 32 healthy subjects of both sexes in the same age range. The investigation was carried out applying a series of 20 supramaximal stimuli at 0.5 Hz on tibial and ulnar nerves bilaterally. In all pa…
Increased risk of sensory neuropathy in workers with chloracne after exposure to 2,3,7,8-polychlorinated dioxins and furans
1999
Objective - The existence of a peripheral neuropathy after exposure to polychlorinated dioxins (PCDD) is still discussed, as studies concerning dioxin effects on the peripheral nervous system are rare and contradictory. Material and methods - Clinical and neurophysiological examinations (motor conduction velocity of the peroneal nerve, sensory conduction velocities of the sural and ulnar nerves) were made in 156 dioxin exposed workers (42 with, 114 without cloracne) from one pesticide producing plant. Because of known risk factors for peripheral neuropathy, 7 workers with and 28 without cloracne were excluded from further analysis. Results - Workers with chloracne had a significantly higher…
Simple endoscopic decompression of cubital tunnel syndrome with the Agee system: anatomic study and first clinical results.
2010
BACKGROUND Simple decompression in ulnar nerve compression syndromes offers options for endoscopic applications. OBJECTIVE The authors present their initial experience with the Agee device. PATIENTS AND METHODS The monoportal endoscopic technique (Agee system) was evaluated on 10 cadaveric arms. Subsequently, 32 arms of 29 patients were operated on between January 2006 and March 2009. All patients presented with typical clinical signs and neurophysiologic studies. Long-term follow-up examinations were obtained in 27 of 32 arms. RESULTS In the cadaver study, the ulnar nerve was always correctly identified. No nerve damage occurred, and sufficient decompression of the ulnar nerve was always a…
Endoscopic decompression of the ulnar nerve at the elbow.
2010
OBJECTIVE: Recently, several studies suggested that simple decompression is as effective as anterior transposition in ulnar nerve entrapment syndrome. Simple decompression might be performed with minimally invasive techniques. The authors present their technique and results with endoscopic decompression in ulnar nerve entrapment syndrome. MATERIAL AND METHODS: Between January 2005 and March 2008, 24 patients (mean age, 45.5 years; range, 26-67 years) underwent surgery for 26 ulnar nerve entrapment syndromes (2 bilateral). All patients presented with typical clinical signs and neurophysiologic studies. RESULTS: Intraoperatively, the ulnar nerve was localized directly at the sulcus, and subse…
Analysis of F-wave in metabolic neuropathies: a comparative study in uremic and diabetic patients.
1987
Motor nerve conduction study along the entire length of the ulnar and tibialis posterior nerves was carried out in 30 diabetics compared with 30 uremic patients and 30 control subjects. The conduction in the proximal and the distal nerve segments was evaluated by the determination of the M and F latencies, MNCV (between the stimulus sites), FWCV (between the spinal cord and the stimulus sites), and F-ratio (conduction time ratio of proximal to distal segment). In both groups of patients the lower limbs appear much more involved than the upper, where the ulnar nerve is more commonly affected in uremic than in diabetic patients. In diabetic neuropathy the motor conduction abnormalities are di…
Isometric muscle contractions after double pulse stimulation. comparison of healthy subjects and patients with myotonic dystrophy.
1996
Isometric contractions of the adductor pollicis muscle were studied in healthy subjects and patients with myotonic dystrophy after single and double stimuli of the ulnar nerve using a wide range of interstimulus intervals (ISI, 0.4-180 ms). In healthy subjects, the force contributed by a second stimulus was greater than the single twitch force being maximal (mean + 140%) at 12-ms ISI. In myotonic dystrophy, the force contributed by the second stimulus was (relative to a reduced twitch amplitude) increased (mean + 204%) with a maximum at 4.8-ms ISI. An abnormal increase of force was only recorded if the single twitch force was clearly reduced. The absolute refractory period of muscle contrac…
Fibroadipose Vascular Anomaly of the Upper Extremity
2021
ABSTRACT Alomari and colleagues described in 2014 for the first time a distinct combination of vascular malformation, fibrofatty muscular infiltration and contracture which was termed fibroadipose vascular anomaly (FAVA) (J Pediatr Orthoped 34, 109-117 (2014). So far only few publications (J Pediatr Orthoped (2014) 34, 109-117; J Hand Surg (2020). 45, 68.e1, 68.e13; Ann Vasc Dis (2014) 7, 316-319; Pediatr Radiol 46, 1179-1186 (2016)) concerning this newly described disease have been published, covering only a limited number of cases. We present a case of a 19-year-old male patient suffering from a FAVA of the proximal forearm with a severe contracture of the infiltrated flexor musculature. …
Changes of sensory conduction velocity and refractory periods with decreasing tissue temperature in man.
1977
Changes with temperature of maximum sensory nerve conduction velocity as well as absolute and relative refractory periods were tested in 14 human subjects. Corresponding to previously published findings maximum conduction velocity decreased with cooling following a Q10 of +1.4. The absolute and relative refractory periods were increased by cooling, the Q10 being -3.1 and -3.35 respectively. There was a tendency showing a more pronounced temperature effect at low temperatures. The Q10 and the steepness of the regressionline changed at the level of 26.9 degrees C, but were significant for the relative refractory period only.