Ulnar Neuropathy

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Poul Frost - One of the best experts on this subject based on the ideXlab platform.

  • Reply: lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.
    Muscle & nerve, 2014
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy like symptoms
    Muscle & Nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsangfrederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • Lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms: Risk Factors for Ulnar Neuropathy
    Muscle & nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43-7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m(2), OR 1.99 (95% CI 1.25-3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Findings suggest that smoking specifically affects the Ulnar nerve. Copyright © 2013 Wiley Periodicals, Inc.

  • prognosis of Ulnar Neuropathy and Ulnar Neuropathy like symptoms in relation to occupational biomechanical exposures and lifestyle
    Scandinavian Journal of Work Environment & Health, 2013
    Co-Authors: Susanne Wulff Svendsen, Birger Johnsen, Anders Fuglsangfrederiksen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–<65 years, 2001–2007. Potential prognostic factors included occupational biomechanical exposures, lifestyle factors, and NCS result. Outcomes were severity of symptoms and disability according to questionnaire scores. Referents delivered reference values. We used ordinal logistic regression. Results The percentage of those responding was 61%, comprising 324 patients with Ulnar Neuropathy and 396 with Ulnar Neuropathy-like symptoms. At follow-up, both patient groups had more severe symptoms and disability than age and sex matched referents. Abnormal NCS indicated a poorer prognosis regarding symptom severity [odds ratio (OR) 1.44, 95% confidence interval (95% CI) 1.01–2.01], but not disability (OR 0.78, 95% CI 0.57–1.08). High occupational force requirements indicated a poorer prognosis regarding both symptom severity (OR 1.78, 95% CI 1.10–2.88) and disability (OR 1.66, 95% CI 1.06–2.59). Other negative prognostic factors for both outcomes were current smoking, obesity, distal upper-extremity fractures, female sex, and a recent NCS date (suggesting improvement over time). Conclusions NCS confirmation of Ulnar Neuropathy identified patients with a poorer prognosis regarding symptoms. A negative impact of high occupational force requirements, current smoking, and obesity on both outcomes suggested that reduction of these factors might improve prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.

  • Prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms in relation to occupational biomechanical exposures and lifestyle.
    Scandinavian journal of work environment & health, 2013
    Co-Authors: Susanne Wulff Svendsen, Anders Fuglsang-frederiksen, Birger Johnsen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–

Susanne Wulff Svendsen - One of the best experts on this subject based on the ideXlab platform.

  • Reply: lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.
    Muscle & nerve, 2014
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy like symptoms
    Muscle & Nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsangfrederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • Lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms: Risk Factors for Ulnar Neuropathy
    Muscle & nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43-7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m(2), OR 1.99 (95% CI 1.25-3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Findings suggest that smoking specifically affects the Ulnar nerve. Copyright © 2013 Wiley Periodicals, Inc.

  • prognosis of Ulnar Neuropathy and Ulnar Neuropathy like symptoms in relation to occupational biomechanical exposures and lifestyle
    Scandinavian Journal of Work Environment & Health, 2013
    Co-Authors: Susanne Wulff Svendsen, Birger Johnsen, Anders Fuglsangfrederiksen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–<65 years, 2001–2007. Potential prognostic factors included occupational biomechanical exposures, lifestyle factors, and NCS result. Outcomes were severity of symptoms and disability according to questionnaire scores. Referents delivered reference values. We used ordinal logistic regression. Results The percentage of those responding was 61%, comprising 324 patients with Ulnar Neuropathy and 396 with Ulnar Neuropathy-like symptoms. At follow-up, both patient groups had more severe symptoms and disability than age and sex matched referents. Abnormal NCS indicated a poorer prognosis regarding symptom severity [odds ratio (OR) 1.44, 95% confidence interval (95% CI) 1.01–2.01], but not disability (OR 0.78, 95% CI 0.57–1.08). High occupational force requirements indicated a poorer prognosis regarding both symptom severity (OR 1.78, 95% CI 1.10–2.88) and disability (OR 1.66, 95% CI 1.06–2.59). Other negative prognostic factors for both outcomes were current smoking, obesity, distal upper-extremity fractures, female sex, and a recent NCS date (suggesting improvement over time). Conclusions NCS confirmation of Ulnar Neuropathy identified patients with a poorer prognosis regarding symptoms. A negative impact of high occupational force requirements, current smoking, and obesity on both outcomes suggested that reduction of these factors might improve prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.

  • Prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms in relation to occupational biomechanical exposures and lifestyle.
    Scandinavian journal of work environment & health, 2013
    Co-Authors: Susanne Wulff Svendsen, Anders Fuglsang-frederiksen, Birger Johnsen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–

Birger Johnsen - One of the best experts on this subject based on the ideXlab platform.

  • Reply: lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.
    Muscle & nerve, 2014
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy like symptoms
    Muscle & Nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsangfrederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • Lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy-like symptoms: Risk Factors for Ulnar Neuropathy
    Muscle & nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsang-frederiksen, Susanne Wulff Svendsen
    Abstract:

    We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43-7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m(2), OR 1.99 (95% CI 1.25-3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Findings suggest that smoking specifically affects the Ulnar nerve. Copyright © 2013 Wiley Periodicals, Inc.

  • prognosis of Ulnar Neuropathy and Ulnar Neuropathy like symptoms in relation to occupational biomechanical exposures and lifestyle
    Scandinavian Journal of Work Environment & Health, 2013
    Co-Authors: Susanne Wulff Svendsen, Birger Johnsen, Anders Fuglsangfrederiksen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–<65 years, 2001–2007. Potential prognostic factors included occupational biomechanical exposures, lifestyle factors, and NCS result. Outcomes were severity of symptoms and disability according to questionnaire scores. Referents delivered reference values. We used ordinal logistic regression. Results The percentage of those responding was 61%, comprising 324 patients with Ulnar Neuropathy and 396 with Ulnar Neuropathy-like symptoms. At follow-up, both patient groups had more severe symptoms and disability than age and sex matched referents. Abnormal NCS indicated a poorer prognosis regarding symptom severity [odds ratio (OR) 1.44, 95% confidence interval (95% CI) 1.01–2.01], but not disability (OR 0.78, 95% CI 0.57–1.08). High occupational force requirements indicated a poorer prognosis regarding both symptom severity (OR 1.78, 95% CI 1.10–2.88) and disability (OR 1.66, 95% CI 1.06–2.59). Other negative prognostic factors for both outcomes were current smoking, obesity, distal upper-extremity fractures, female sex, and a recent NCS date (suggesting improvement over time). Conclusions NCS confirmation of Ulnar Neuropathy identified patients with a poorer prognosis regarding symptoms. A negative impact of high occupational force requirements, current smoking, and obesity on both outcomes suggested that reduction of these factors might improve prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.

  • Prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms in relation to occupational biomechanical exposures and lifestyle.
    Scandinavian journal of work environment & health, 2013
    Co-Authors: Susanne Wulff Svendsen, Anders Fuglsang-frederiksen, Birger Johnsen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–

David C. Preston - One of the best experts on this subject based on the ideXlab platform.

  • Neuromuscular ultrasound in electrically non-localizable Ulnar Neuropathy.
    Muscle & nerve, 2018
    Co-Authors: Mohammad Alrajeh, David C. Preston
    Abstract:

    INTRODUCTION The aim of this study was to determine the value of high-resolution ultrasound (HRUS) in patients with Ulnar Neuropathy whose electrophysiology displayed an axonal, non-localizing pattern. METHODS A prospective study of patients referred to an electromyography laboratory for Ulnar Neuropathy was performed. Of the 56 patients with clinical and electrodiagnostic (EDx) evidence of Ulnar Neuropathy, 12 were identified with non-localizing electrophysiology who subsequently underwent HRUS of the Ulnar nerve. RESULTS HRUS localized the Ulnar Neuropathy in all patients. In 2 patients, HRUS demonstrated structural lesions not at the elbow. DISCUSSION HRUS often adds complementary information to standard EDx studies, including Ulnar Neuropathy. Thus, HRUS should be employed in patients with a non-localizing Ulnar Neuropathy on EDx studies. Muscle Nerve 58: 655-659, 2018.

  • Neuromuscular Ultrasound Localizes Electrically Non-Localizable Ulnar Neuropathy (P4.083)
    Neurology, 2016
    Co-Authors: Mohammad Alrajeh, David C. Preston
    Abstract:

    Background: Ulnar Neuropathy is the second most common entrapment Neuropathy. In contrast to median Neuropathy at the carpal tunnel, localizing the Ulnar nerve lesion by electrodiagnostic (EDX) studies is often more difficult. In these case, the pathophysiology is that of axonal loss, and EDX studies only demonstrate a non-localizable Ulnar Neuropathy at or proximal to the most proximal abnormal muscle on EMG. Although the elbow is most common site of compression, Ulnar nerve fibers are susceptible to compression at other sites, including the wrist, forearm, arm and lower brachial plexus. High-Resolution ultrasonography (HRUS) is an evolving tool in the evaluation of peripheral nervous system, especially entrapment neuropathies. HRUS is an accepted and validated method in the assessment of median Neuropathy at the wrist. In Ulnar Neuropathy, HRUS has also been found useful, but has not been studied in this common subset of Ulnar Neuropathy patients. Objective: To assess the use of HRUS in localizing Ulnar Neuropathy in patients with clinical symptoms and abnormal but non-localizing Ulnar EDX studies. Methods: We prospectively studied sequential patients referred to the EMG laboratory with signs and symptoms consistent with Ulnar Neuropathy in whom EDX studies demonstrated a non-localizable Ulnar Neuropathy. HRUS was performed of the Ulnar nerve from the wrist to the upper arm. Cross sectional area measurements were performed at the wrist, forearm, cubital tunnel, epicondylar groove and upper arm. Results: Eight patients with an EDX study showing a non-localizing Ulnar Neuropathy were studied. In all patients, HRUS was able to definitively localize the Ulnar Neuropathy: 5 at the groove, 2 at the cubital tunnel, and 1 at the wrist. Conclusion: In patients with suspected Ulnar Neuropathy clinically and in whom EDX studies demonstrate a non-localizable Ulnar Neuropathy, HRUS should be performed as a highly effective measure to localize the lesion. Disclosure: Dr. Alrajeh has nothing to disclose. Dr. Preston has nothing to disclose.

  • Comparison of the flexed and extended elbow positions in localiziing Ulnar Neuropathy at the elbow
    Muscle & nerve, 1995
    Co-Authors: Milind J. Kothari, David C. Preston
    Abstract:

    Electrophysiologic localization of Ulnar Neuropathy at the elbow often depends on demonstration of segmental slowing. Based on normative data obtained from 50 control subject, we compared the utility of flexed and extended elbow positions in demonstrating focal slowing at the elbow as compared to the forearm segment in patients with Ulnar Neuropathy. We studied 35 patients with Ulnar Neuropathy with definite electrophysiologic localization to the elbow segment defined by conduction block across the elbow segment or by focal slowing demonstrated either in the flexed or extended position. Applying cutoff values from the control group, all 35 patients demonstrated focal slowing at the elbow in the flexed position, whereas only 5 of 35 (14%) patients did so in the extended position. We Conclude that the flexed elbow position is more sensitive than the extended position in localizing Ulnar Neuropathy at the elbow and should be the preferred method when performing Ulnar motor conduction studies.© 1995 John Wiley &Sons, Inc.

  • Sensory and mixed nerve conduction studies in the evaluation of Ulnar Neuropathy at the elbow
    Muscle & nerve, 1994
    Co-Authors: Elizabeth M. Raynor, David C. Preston, Jeremy M. Shefner, Eric L. Logigian
    Abstract:

    The relative sensitivities of sensory, mixed nerve, and motor conduction studies in assessing Ulnar Neuropathy at the elbow have not yet been established. Using surface electrodes, we performed conduction studies across the elbow segment in 43 patients with symptoms referable to the Ulnar nerve and 40 control subjects. Segmental slowing of motor conduction localized the lesion to the elbow in 14 of 21 patients (67%) with clear evidence of Ulnar Neuropathy on physical examination but only in 2 of 22 (9%) with subtle or no physical examination abnormalities. The diagnostic yield was increased by the finding of segmental slowing of sensory or mixed nerve conduction across the elbow to 86% and 68%, respectively, for each of the groups. We conclude that surface-recorded sensory and mixed nerve conduction studies appear to be more sensitive than motor studies in the electrodiagnosis of Ulnar Neuropathy at the elbow and are especially valuable in patients with subtle clinical involvement.

Anders Fuglsangfrederiksen - One of the best experts on this subject based on the ideXlab platform.

  • lifestyle risk factors for Ulnar Neuropathy and Ulnar Neuropathy like symptoms
    Muscle & Nerve, 2013
    Co-Authors: Poul Frost, Birger Johnsen, Anders Fuglsangfrederiksen, Susanne Wulff Svendsen
    Abstract:

    Introduction: We examined whether lifestyle factors differ between patients with Ulnar Neuropathy confirmed by electroneurography (ENG) and those with Ulnar Neuropathy-like symptoms with normal Ulnar nerve ENG. Methods: Among patients examined by ENG for suspected Ulnar Neuropathy, we identified 546 patients with Ulnar Neuropathy and 633 patients with Ulnar Neuropathy-like symptoms. These groups were compared with 2 separate groups of matched community referents and to each other. Questionnaire information on lifestyle was obtained. The electrophysiological severity of Neuropathy was also graded. We used conditional and unconditional logistic regression. Results: Responses were obtained from 59%. Ulnar Neuropathy was related to smoking, adjusted odds ratio (OR) 4.31 (95% confidence interval [CI] 2.43–7.64) for >24 pack-years. Ulnar Neuropathy-like symptoms were related to body mass index ≥30 kg/m2, OR 1.99 (95% CI 1.25–3.19). Smoking was associated with increased severity of Ulnar Neuropathy. Conclusions: Findings suggest that smoking specifically affects the Ulnar nerve. Muscle Nerve 48: 507–515, 2013

  • prognosis of Ulnar Neuropathy and Ulnar Neuropathy like symptoms in relation to occupational biomechanical exposures and lifestyle
    Scandinavian Journal of Work Environment & Health, 2013
    Co-Authors: Susanne Wulff Svendsen, Birger Johnsen, Anders Fuglsangfrederiksen, Poul Frost
    Abstract:

    Objective The aim of this paper was to identify prognostic factors for severity of symptoms and disability among patients with Ulnar Neuropathy confirmed by nerve conduction studies (NCS) or Ulnar Neuropathy-like symptoms with normal Ulnar nerve NCS. Methods We conducted a cohort study based on a matched case-referent study. In 2008, we mailed a questionnaire to 1179 patients who were examined by NCS for suspected Ulnar Neuropathy at the age of ≥18–<65 years, 2001–2007. Potential prognostic factors included occupational biomechanical exposures, lifestyle factors, and NCS result. Outcomes were severity of symptoms and disability according to questionnaire scores. Referents delivered reference values. We used ordinal logistic regression. Results The percentage of those responding was 61%, comprising 324 patients with Ulnar Neuropathy and 396 with Ulnar Neuropathy-like symptoms. At follow-up, both patient groups had more severe symptoms and disability than age and sex matched referents. Abnormal NCS indicated a poorer prognosis regarding symptom severity [odds ratio (OR) 1.44, 95% confidence interval (95% CI) 1.01–2.01], but not disability (OR 0.78, 95% CI 0.57–1.08). High occupational force requirements indicated a poorer prognosis regarding both symptom severity (OR 1.78, 95% CI 1.10–2.88) and disability (OR 1.66, 95% CI 1.06–2.59). Other negative prognostic factors for both outcomes were current smoking, obesity, distal upper-extremity fractures, female sex, and a recent NCS date (suggesting improvement over time). Conclusions NCS confirmation of Ulnar Neuropathy identified patients with a poorer prognosis regarding symptoms. A negative impact of high occupational force requirements, current smoking, and obesity on both outcomes suggested that reduction of these factors might improve prognosis of Ulnar Neuropathy and Ulnar Neuropathy-like symptoms.

  • Ulnar Neuropathy and Ulnar Neuropathy like symptoms in relation to biomechanical exposures assessed by a job exposure matrix a triple case referent study
    Occupational and Environmental Medicine, 2012
    Co-Authors: Susanne Wulff Svendsen, Birger Johnsen, Anders Fuglsangfrederiksen, Poul Frost
    Abstract:

    Objectives We aimed to evaluate relations between occupational biomechanical exposures and (1) Ulnar Neuropathy confirmed by electroneurography (ENG) and (2) Ulnar Neuropathy-like symptoms with normal ENG. Methods In this triple case–referent study, we identified all patients aged 18–65 years, examined with ENG at a neurophysiological department on suspicion of Ulnar Neuropathy, 2001–2007. We mailed a questionnaire to 546 patients with Ulnar Neuropathy, 633 patients with Ulnar Neuropathy-like symptoms and two separate groups of community referents, matched on sex, age and primary care centre (risk set sampling). The two patient groups were also compared to each other directly. We constructed a Job Exposure Matrix to provide estimates of exposure to non-neutral postures, repetitive movements, hand–arm vibrations and forceful work. Conditional and unconditional logistic regressions were used. Results The proportion who responded was 59%. Ulnar Neuropathy was related to forceful work with an exposure–response pattern reaching an OR of 3.85 (95% CI 2.04 to 7.24); non-neutral postures strengthened effects of forceful work. No relation was observed with repetitive movements. Ulnar Neuropathy-like symptoms were related to repetitive movements with an OR of 1.89 (95% CI 1.01 to 3.52) in the highest-exposure category (≥2.5 h/day); forceful work was unrelated to the outcome. Conclusions Ulnar Neuropathy and Ulnar Neuropathy-like symptoms differed with respect to associations with occupational biomechanical exposures. Findings suggested specific effects of forceful work on the Ulnar nerve. Thus, results corroborated the importance of an electrophysiological diagnosis when evaluating risk factors for Ulnar Neuropathy. Preventive effects may be achieved by reducing biomechanical exposures at work.