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Onyekwere IC, Victoria C, Kim A, Zielinski E, Nwawka OK, Osei DA. Surgical Decision Making for Mild-to-Moderate Cubital Tunnel Syndrome. JOURNAL OF HAND SURGERY GLOBAL ONLINE 2024; 6:390-394. [PMID: 38817757 PMCID: PMC11133938 DOI: 10.1016/j.jhsg.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 02/25/2024] [Indexed: 06/01/2024] Open
Abstract
Purpose The management of ulnar neuropathy remains unclear as there are neither consensus guidelines nor compelling data available to inform optimal treatment. Identifying patients in the mild-to-moderate group that would benefit most from surgery is challenging as their symptoms can be subtle and less debilitating. This study investigated predictors of surgical intervention among patients presenting with McGowan mild or moderate cubital tunnel syndrome (CuTS). Methods This is an institutional review board-approved study. Patients evaluated from March 2016 to July 2022 were included if they were diagnosed with McGowan mild or moderate CuTS and underwent concurrent electrodiagnostic and ultrasound evaluations. Patient demographics, symptom presentation, and clinical and diagnostic test findings were analyzed. Variables were analyzed using Student t test, Mann-Whitney U test, or Pearson's chi-square test. Multivariable logistic regression was used to assess the association of covariates and surgery. Results Seventy-three patients and 103 elbows were identified. The mean age and body mass index were 51 years and 26.9, respectively. Most patients were men, right-handed, and unilaterally symptomatic in the dominant hand. Twenty-six elbows were surgically treated. Bivariable analyses by surgical treatment showed that patients who underwent surgery more often had positive electrodiagnostic findings including motor nerve conduction velocity <50 m/s and a >10 m/s conduction velocity difference across the forearm compared with elbow. Fifty-nine cases were categorized as electrodiagnostically normal. Of the electrodiagnostically normal cases, 29 had positive findings of CuTS on ultrasound. Logistic regression model showed that electrodiagnostically severe cases had 3.7 times higher odds of being surgically treated than normal counterparts (adjusted odds ratio, 3.7; 95% CI, 1.11-12.6; P = .03). Conclusions Not many differences in objective findings identify patients who should receive operative treatment. In addition to test results, more subjective findings from patients such as patient-reported level of impairment may be able to bridge this gap in surgical decision making. Clinical relevance This study contributes to treatment decision making for mild and moderate CuTS.
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Affiliation(s)
- Ikenna C. Onyekwere
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
| | - Christian Victoria
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
| | - Arin Kim
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
| | - Elizabeth Zielinski
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
| | - Ogonna K. Nwawka
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
| | - Daniel A. Osei
- Hand and Upper Extremity Service, Hospital for Special Surgery, New York, NY
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Lee TY, Dy CJ, Ray WZ, Colorado BS, Brogan DM. Gray-Scale and Power Doppler Ultrasound Findings Predictive of Cubital Tunnel Syndrome Severity. Hand (N Y) 2024; 19:392-399. [PMID: 36218028 PMCID: PMC11067851 DOI: 10.1177/15589447221127334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The use of ultrasound in the diagnosis of cubital tunnel syndrome (CuTS) is an attractive alternative to electrodiagnostic (EDX) studies, but its utility is binary with poor severity correlation. We hypothesize that increasing ulnar nerve cross-sectional area (CSA) and power Doppler measurement of intraneural vascularity may predict the extent of disease. METHODS We identified 20 elbows from patients with a history of CuTS and 20 elbows in 10 asymptomatic controls. Electrodiagnosis was performed for symptomatic patients. Gray-scale ultrasound and power Doppler ultrasound were performed to measure CSA and intraneural vascularity in all participants. Functional measures, Boston Carpal Tunnel Questionnaire (BCTQ), and Patient-Reported Outcomes Measurement Information System surveys were also completed. RESULTS A strong positive correlation was found between CSA and motor nerve conduction velocity (MNCV) decrease between elbow and forearm, which increased when BCTQ >2 was used as a screening criterion. Increased CSA also demonstrated a high positive predictive value (PPV) in predicting MNCV changes, but poor ability to predict axonal loss. In contrast, power Doppler ultrasound demonstrated 100% PPV and 94% negative predictive value (NPV) in predicting severe CuTS (defined as compound motor action potential [CMAP] amplitude <6 mV and electromyography [EMG] findings). CONCLUSIONS Cross-sectional area is a sensitive method for identifying changes in MNCV and amplitude but does not stratify disease severity, as defined by diminished CMAP amplitude and/or evidence of denervation on EMG. The presence of increased intraneural vascularity is relatively sensitive but highly specific for axonal loss. The combination of nerve CSA, BCTQ screening, and power Doppler ultrasound may provide an alternative means for CuTS assessment.
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Elkholy AR, Rezk EM, Shabaan N, Elkhouly RM, Shamhoot EA. The role of preoperative ultrasound in the management of peripheral nerve injuries. Clin Neurol Neurosurg 2024; 236:108083. [PMID: 38104445 DOI: 10.1016/j.clineuro.2023.108083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND Peripheral nerve injury refers to any damage or trauma to the nerves located outside the central nervous system. Ultrasonography is a reliable, cheap, and minimally invasive method in clinical practice to give physicians useful information about nerve injury. OBJECTIVES to assess the power of ultrasound in determining the presence, localization, and extent of neural damage in patients with clinical evidence of peripheral nerve lesions before surgery. METHODS This cross-sectional study was conducted on 78 patients (56 females and 22 males, aged from 9 to 52 years) who had different pathologies including entrapment, tumoral, post-traumatic, and post-surgical nerve injuries at the Neurosurgery and Physical Medicine, Rheumatology, and Rehabilitation Departments, Tanta University Hospitals. All studied patients had preoperative evaluation; neurological examination, electrodiagnostic studies, and sonographic examinations with linear array transducers (frequencies ranging from 7.5 to 16 MHz). RESULTS The most common pathological condition was entrapment neuropathy (39 patients) (50%). Ultrasound complemented the electrodiagnostic studies by determining the site of entrapment manifested by increased mean maximum cross-sectional area of the nerve proximal to the site of entrapment and nerve hypoechogenicity. In post-traumatic and iatrogenic neuropathies (35 patients) (44.9%), the ultrasound finding revealed neuroma in continuity in nine cases (11.5%), complete neurotmesis with stump neuroma in eighteen patients (23.1%), and eight cases (10.3%) showed perineural adhesion. In all cases, the nerve was hypoechoic at the site of injury. The presence of hyperechoic fibrous tissue could indicate perineural adhesion and the necessity for neurolysis. This study also included three (3.8%) cases had schwannoma, and one case (1.3%) had neurofibroma. Ultrasound was used to confirm the diagnosis by determining the tumor's size and vascular supply. CONCLUSIONS Ultrasonography is a diagnostic and surgical planning tool that is becoming more and more useful for the management of peripheral nerve injuries. Its high resolution and real-time capability provide safe and cost-effective scans that aid in determining the extent of injuries. For patients with peripheral nerve injuries, ultrasound is advised to be added to the routine clinical and neurophysiological evaluation. It is also advised to use ultrasound as a first-line imaging modality for tumors thought to be of nerve origin.
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Affiliation(s)
- Ahmed R Elkholy
- Department of Neurosurgery, Faculty of Medicine, Tanta University, Egypt
| | - Essam M Rezk
- Department of Neurosurgery, Faculty of Medicine, Tanta University, Egypt.
| | - Nehal Shabaan
- Department of Neurosurgery, Faculty of Medicine, Tanta University, Egypt
| | - Radwa M Elkhouly
- Department of Rheumatology, Rehabilitation and Physical Medicine, Faculty of Medicine, Tanta University, Egypt
| | - Ebrahim A Shamhoot
- Department of Neurosurgery, Faculty of Medicine, Tanta University, Egypt
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Chirokikh AA, Carroll TJ, Hoffman S, Speach D, Jones CMC, Ketonis C. Where Does Ultrasound Fit in the Diagnostic Algorithm for Cubital Tunnel Syndrome? Hand (N Y) 2023:15589447231200645. [PMID: 37746734 DOI: 10.1177/15589447231200645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
BACKGROUND Ultrasound (US) has emerged as a promising supplement to electrodiagnostic studies (EDX) in the diagnosis of cubital tunnel syndrome (CuTS) and has potential to be performed by novice operators. Our objective is to understand the discrepancies in assessment between the two modalities and to assess the utility of US in CuTS diagnosis by a novice operator. METHODS Patients who presented to a single tertiary academic medical center and clinically diagnosed with CuTS were prospectively enrolled. Electrodiagnostic studies were performed along with US measurements of the cross-sectional area (CSA) of the ulnar nerve by both a board-certified physiatrist and novice operator. Electrodiagnostic study and US outcomes were compared among four diagnostic impression groups: EDX-/US-, EDX+/US-, EDX-/US+, and EDX+/US+. RESULTS Sixteen patients were classified as abnormal by both EDX and US, 14 were classified abnormal by US only, 3 were classified abnormal by EDX only, and 6 were classified normal by both EDX and US (P = .008, K = 0.14). The EDX+/US+ group had a significantly reduced sensory amplitude compared with the EDX-/US+ (P = .04) group. Diagnostic classifications between a board-certified physiatrist and novice operator were in moderate agreement (K = 0.58, P = .08). CONCLUSIONS Ultrasound detected a greater proportion of patients as abnormal than EDX. A subset of patients with clinical diagnoses of CuTS had normal sensory amplitudes but increased maximum nerve CSAs. Competency in US may be easily acquired with minimal training, suggesting its potential to be extended for use by other members of the health care team.
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Graf A, Ahmed AS, Roundy R, Gottschalk MB, Dempsey A. Modern Treatment of Cubital Tunnel Syndrome: Evidence and Controversy. JOURNAL OF HAND SURGERY GLOBAL ONLINE 2023; 5:547-560. [PMID: 37521554 PMCID: PMC10382899 DOI: 10.1016/j.jhsg.2022.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022] Open
Abstract
Cubital tunnel syndrome is the second most common peripheral mononeuropathy in the upper extremity. However, the diagnosis and treatment of cubital tunnel syndrome remains controversial without a standard algorithm. Although diagnosis can often be made from the patient's history and physical examination alone, electrodiagnostic studies, ultrasound, computed tomography (CT), and magnetic resonance image (MRI) can also be useful in diagnosing the disease and selecting the most appropriate treatment option. Treatment options include conservative nonoperative techniques as well as various surgical options, including in situ decompression with or without transposition, medial epicondylectomy, and nerve transfer in advanced disease. The purpose of this review is to summarize the most up-to-date literature regarding cubital tunnel syndrome and propose a treatment algorithm to provide clarity about the challenges of treating this complex patient population.
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Affiliation(s)
- Alexander Graf
- Department of Orthopedic Surgery, Medical College of Wisconsin, Milwaukee, WI
| | - Adil Shahzad Ahmed
- Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta, GA
| | - Robert Roundy
- Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta, GA
| | | | - Amanda Dempsey
- Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta, GA
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Kortlever JT, Brandsema B, Gradl-Dietsch G, Zhao M, Ring D. Electrodiagnostic test results in people with a working diagnosis of cubital tunnel syndrome. J Orthop 2023; 36:114-119. [PMID: 36691440 PMCID: PMC9860396 DOI: 10.1016/j.jor.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 11/19/2022] [Accepted: 01/06/2023] [Indexed: 01/08/2023] Open
Abstract
Background Electrodiagnostic tests (EDx) can determine when symptoms and signs suggestive of idiopathic ulnar neuropathy at the elbow (cubital tunnel syndrome; CubTS) is due to measurable ulnar neuropathy at the elbow (UNE), cervical radiculopathy, or median neuropathy at the carpal tunnel, and when there is no measurable neuropathology associated with the symptoms. The role of EDx in management of CubTS is debated. Questions (1) What is the percentage of patients with CubTS (both including and excluding patients with a previous electrodiagnosis of idiopathic UNE) that have EDx results consistent with idiopathic UNE, other neuropathology, and no detectable neuropathology (2) What factors (e.g. age and gender); are independently associated with electrodiagnosis of UNE. Methods We retrospectively reviewed all medical records of 133 patients with a working diagnosis of CubTS sent for EDx over a 5-year period in one large urban medical center. We recorded data on patient demographics, comorbidities, non-specialist or specialist referring physician, and EDx results. Results Among 133 patients, 61% (N = 81) of EDx identified idiopathic UNE, 14% (N = 18) identified other neuropathology, and for 26% (N = 34) there was no measurable neuropathology. Among the 14 patients with a previous ipsilateral or contralateral electrodiagnosis of UNE, all 14 had electrodiagnosis of UNE. Older age and men were independently associated with an increased likelihood of UNE. Conclusions The observation that people diagnosed with CubTS often do not have UNE, particularly if they are relatively young, suggests that the diagnosis of CubTS may benefit from a more stringent clinical prediction rule. Level of Evidence Diagnostic; Retrospective cohort study; Level III.
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Affiliation(s)
- Joost T.P. Kortlever
- Department of Surgery and Perioperative Care Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Department of Orthopaedic Surgery, Sint Maartenskliniek, Nijmegen, the Netherlands
| | | | - Gertraud Gradl-Dietsch
- Department of Orthopaedic and Trauma Surgery Klinikum Essen, The University of Duisburg, Essen, Germany
| | - Meijuan Zhao
- Department of Physical Medicine and Rehabilitation Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - David Ring
- Department of Surgery and Perioperative Care Dell Medical School, The University of Texas at Austin, Austin, TX, USA
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Pardal-Fernández JM, Diaz-Maroto I, Segura T, de Cabo C. Ulnar nerve thickness at the elbow on longitudinal ultrasound view in control subjects. Neurol Res Pract 2023; 5:4. [PMID: 36698205 PMCID: PMC9878874 DOI: 10.1186/s42466-023-00230-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/03/2023] [Indexed: 01/27/2023] Open
Abstract
INTRODUCTION Ulnar mononeuropathy at the elbow is the second most frequent neuropathy in humans. Diagnosis is based on clinical and electrophysiological criteria and, more recently, also on ultrasound. Cross-sectional ultrasound is currently the most valued, although longitudinal ultrasound allows assessment of the entire affected trajectory of the nerve in a single view, but always in a straight line with no changes in direction, as in the extended elbow. The main aim of this work is to propose normative values for longitudinal ultrasound of the ulnar nerve at the elbow. METHODS The neurological exploration of upper extremity, and electrophysiological and ultrasound parameters at the elbow of ulnar nerve were evaluated in 76 limbs from 38 asymptomatic subjects. RESULTS The diameters of the nerve as well as the distal and proximal areas were larger at the proximal region of the ulnar groove, and even more so in older individuals. In most of these elderly subjects, we found a small, non-significant slowdown in motor conduction velocity at the elbow with respect to the forearm (less than 5 m/s). CONCLUSIONS We observed a good correlation between the longitudinal and cross-sectional ultrasounds of the ulnar nerve at the elbow. Longitudinal ultrasound proved to be sensitive, reliable, simple and rapid, but its greatest contribution was allowing the visualization of the entire nerve trajectory in an integrated way, providing an image with good definition of the outline, proportions and intraneural characteristics of the nerve.
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Affiliation(s)
| | - Inmaculada Diaz-Maroto
- Unit of Neuromuscular Disorders, Department of Neurology, University General Hospital, Albacete, Spain
| | - Tomás Segura
- Department of Neurology, University General Hospital, Albacete, Spain
| | - Carlos de Cabo
- Neuropsychopharmacology Unit, University General Hospital of Albacete, Albacete, Spain
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Mansour J, Ghanimeh J, Ghersi A, Moutinot B, Coulomb R, Kouyoumdjian P, Mares O. Percutaneous ultrasound-guided ulnar nerve release technique compared to open technique: A cadaveric study. SICOT J 2022; 8:40. [PMID: 36155647 PMCID: PMC9511962 DOI: 10.1051/sicotj/2022041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/08/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES To evaluate the outcomes of a novel percutaneous ultrasound-guided technique for release of ulnar nerve entrapment at the elbow when compared to standard open release Methods: One single surgeon performed an ultrasound-guided percutaneous release of the cubital tunnel on a group of five cadaveric elbows and open release on five others. All procedures were timed, and incision lengths were recorded. Meticulous anatomic dissection was then performed to assess the complete release of the carpal tunnel and iatrogenic injuries. RESULTS No significant difference was found between the two groups in terms of complete release and iatrogenic injury, whereas Operative time was significantly shorter for the US-guided technique. Incomplete releases of the nerve were found only during the first two trials in each group, while the third, fourth, and fifth trials showed a complete ulnar nerve release in both series, highlighting a fast learning curve for both techniques. All of this through a significantly smaller incision in the US-guided technique. CONCLUSIONS This study highlights the similar effects of these two techniques in terms of complete release of the ulnar nerve, with no clear superiority of one over the other in terms of morbidity rate. Both have a fast learning curve for an ultrasound-trained surgeon, with the US-guided technique being a less traumatic and quicker alternative procedure.
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Affiliation(s)
- Jad Mansour
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
| | - Joe Ghanimeh
- Department of Orthopedic Surgery, Lebanese American University-Rizk Hospital, Lebanese American University, School of Medicine Beirut Lebanon
| | - Abdelhamid Ghersi
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
| | - Berenice Moutinot
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
| | - Remy Coulomb
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
| | - Pascal Kouyoumdjian
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
| | - Olivier Mares
- Centre Hospitalier Universitaire Nîmes-Caremeau place du professeur Robert-Debré 30029 Nîmes France
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Ferguson DP, Grewal R. Cubital Tunnel Syndrome: Review of Diagnosis and Management. HANDCHIR MIKROCHIR P 2022; 54:253-262. [PMID: 35688432 DOI: 10.1055/a-1808-6973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Cubital tunnel syndrome is one of the most common upper extremity nerve entrapment conditions. Clinical examination and electrodiagnostic studies assist in the diagnosis. Mild cases can be successfully treated conservatively, aiming to reduce traction and compression on the nerve. Surgical management of cubital tunnel syndrome is increasing in frequency. Multiple surgical options exist ranging from simple decompression to decompression and anterior transposition of the nerve. There is no preferred surgical technique. It is critical to reduce the risk of recurrent cubital tunnel syndrome. Revision surgical procedures have worse outcomes than primary surgical procedures.
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Affiliation(s)
| | - Ruby Grewal
- University of Western Ontario Roth
- McFarlane Hand and Upper Limb Center
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Shinohara I, Inui A, Mifune Y, Nishimoto H, Yamaura K, Mukohara S, Yoshikawa T, Kato T, Furukawa T, Hoshino Y, Matsushita T, Kuroda R. Diagnosis of Cubital Tunnel Syndrome Using Deep Learning on Ultrasonographic Images. Diagnostics (Basel) 2022; 12:diagnostics12030632. [PMID: 35328185 PMCID: PMC8947597 DOI: 10.3390/diagnostics12030632] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 02/04/2023] Open
Abstract
Although electromyography is the routine diagnostic method for cubital tunnel syndrome (CuTS), imaging diagnosis by measuring cross-sectional area (CSA) with ultrasonography (US) has also been attempted in recent years. In this study, deep learning (DL), an artificial intelligence (AI) method, was used on US images, and its diagnostic performance for detecting CuTS was investigated. Elbow images of 30 healthy volunteers and 30 patients diagnosed with CuTS were used. Three thousand US images were prepared per each group to visualize the short axis of the ulnar nerve. Transfer learning was performed on 5000 randomly selected training images using three pre-trained models, and the remaining images were used for testing. The model was evaluated by analyzing a confusion matrix and the area under the receiver operating characteristic curve. Occlusion sensitivity and locally interpretable model-agnostic explanations were used to visualize the features deemed important by the AI. The highest score had an accuracy of 0.90, a precision of 0.86, a recall of 1.00, and an F-measure of 0.92. Visualization results show that the DL models focused on the epineurium of the ulnar nerve and the surrounding soft tissue. The proposed technique enables the accurate prediction of CuTS without the need to measure CSA.
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Affiliation(s)
| | - Atsuyuki Inui
- Correspondence: ; Tel.: +81-78-382-5111; Fax: +81-78-351-6944
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Schmid AB, Fundaun J, Tampin B. [Entrapment neuropathies: a contemporary approach to pathophysiology, clinical assessment, and management : German version]. Schmerz 2021; 35:419-433. [PMID: 34505948 DOI: 10.1007/s00482-021-00584-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
Entrapment neuropathies such as carpal tunnel syndrome, radiculopathies, or radicular pain are the most common peripheral neuropathies and also the most common cause for neuropathic pain. Despite their high prevalence, they often remain challenging to diagnose and manage in a clinical setting. Summarising the evidence from both preclinical and clinical studies, this review provides an update on the aetiology and pathophysiology of entrapment neuropathies. Potenzial mechanisms are put in perspective with clinical findings. The contemporary assessment is discussed and diagnostic pitfalls highlighted. The evidence for the noninvasive and surgical management of common entrapment neuropathies is summarised and future areas of research are identified.
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Affiliation(s)
- Annina B Schmid
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford University, West Wing Level 6, OX3 9DU, Oxford, Großbritannien.
| | - Joel Fundaun
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford University, West Wing Level 6, OX3 9DU, Oxford, Großbritannien.,High Country Physical Therapy, Laramie, WY, USA
| | - Brigitte Tampin
- Department of Physiotherapy, Sir Charles Gairdner Hospital, Perth, Westaustralien, Australien.,School of Physiotherapy and Exercise Science, Curtin University, Westaustralien, Australien.,Fakultät Wirtschafts- und Sozialwissenschaften, Hochschule Osnabrück, Osnabrück, Deutschland
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12
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Dy CJ, Colorado BS, Landau AJ, Brogan DM. Interpretation of Electrodiagnostic Studies: How to Apply It to the Practice of Orthopaedic Surgery. J Am Acad Orthop Surg 2021; 29:e646-e654. [PMID: 33739943 PMCID: PMC8217100 DOI: 10.5435/jaaos-d-20-00322] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 02/21/2021] [Indexed: 02/01/2023] Open
Abstract
Electrodiagnostic studies may help orthopaedic surgeons to identify and confirm nerve pathology, determine severity of disease, localize the lesion, identify concomitant or alternative pathology, and prognosticate potential outcomes with nonoperative or operative treatment. Surgeons should recognize the indications for electrodiagnostic studies, principles of their performance, and how to assess the primary data generated by the examination and how it can inform their treatment plans.
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Affiliation(s)
- Christopher J. Dy
- Department of Orthopaedic Surgery; Washington University School of Medicine – St. Louis, MO
- Department of Surgery, Division of Public Health Sciences; Washington University School of Medicine – St. Louis, MO
| | - Berdale S. Colorado
- Department of Orthopaedic Surgery; Washington University School of Medicine – St. Louis, MO
- Department of Neurology; Washington University School of Medicine – St. Louis, MO
| | - Andrew J. Landau
- Department of Orthopaedic Surgery; Washington University School of Medicine – St. Louis, MO
| | - David M. Brogan
- Department of Orthopaedic Surgery; Washington University School of Medicine – St. Louis, MO
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Deeg J, Loizides A, Löscher W, Zangerle A, Gruber H. Cycling-Related Compressive Neuropathy of the Deep Ulnar Motor Branch in the Hand: Is Sonography a Valid Tool? ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:1970-1975. [PMID: 33810886 DOI: 10.1016/j.ultrasmedbio.2021.02.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/26/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Repetitive vibratory trauma in cyclists is one of the most common causes of ulnar nerve compression at the wrist. This study describes five cases of clinically suspected compression syndrome of the deep terminal branch of the ulnar nerve (DBUN) defined by high-resolution ultrasound (HRUS) with a 18-MHz linear transducer. Reliable HRUS visualization of the DBUN was feasible in all patients. The affected nerves had focally swollen and hypo-echoic changed segments. HRUS is a good imaging tool for the evaluation of a suspicious DBUN neuropathy if no electrodiagnostic testing is available or in patients with mild to moderate clinical symptoms with inconclusive electrodiagnostic results.
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Affiliation(s)
- Johannes Deeg
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria.
| | - Alexander Loizides
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria
| | - Wolfgang Löscher
- Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
| | | | - Hannes Gruber
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria
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Gao JM, Yuan Y, Gong KT, Ma XL, Chen X. Ultrasound-Assisted Precise In Situ Decompression for Cubital Tunnel Syndrome. Orthop Surg 2021; 13:840-846. [PMID: 33749099 PMCID: PMC8126903 DOI: 10.1111/os.12922] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/06/2020] [Accepted: 12/10/2020] [Indexed: 12/12/2022] Open
Abstract
Objective To explore the effect of locating the ulnar nerve compression sites and guiding the small incision so as to decompress the ulnar nerve in situ on the elbow by high‐frequency ultrasound before operation. Methods A retrospective analysis was conducted on 56 patients who underwent ultrasound‐assisted in situ decompression for cubital tunnel syndrome from May 2018 to August 2019. The patients' average age was 51.13 ± 7.35 years, mean duration of symptoms was 6.51 ± 1.96 months, and mean postoperative follow‐up was 6.07 ± 0.82 months. Nine patients had Dellon's stage mild, 39 had stage moderate, and eight had stage severe. Ultrasound and electromyography were completed in all patients before operation. The presence of ulnar nerve compressive lesion, the specific location, and the reason and extent of compression were determined by ultrasound. A small incision in situ surgery was given to decompress the ulnar nerve according to the pre‐defined compressive sites. Results All patients underwent in situ decompression. The compression sites around the elbow were as follows: two in the arcade of Struthers, one in the medial intermuscular septum, four in the anconeus epitrochlearis muscle, five beside the cyst of the proximal flexor carpi ulnaris (FCU), and the remaining 44 cases were all from the compression between Osborne's ligament to the two heads of the FCU. The compression localizations diagnosed by ultrasound were confirmed by operations. Preoperative ultrasound confirmed no ulnar nerve subluxation in all cases. The postoperative outcomes were satisfactory. There was no recurrence or aggravation of symptoms in this group of patients according to the modified Bishop scoring system; results showed that 43 cases were excellent, 10 were good, and three were fair. Conclusions High‐frequency ultrasound can accurately and comprehensively evaluate the ulnar nerve compression and the surrounding tissues, thus providing significant guidance for the precise minimally invasive treatment of ulnar nerve compression.
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Affiliation(s)
- Jin-Mei Gao
- Department of Ultrasound, Tianjin Hospital, Tianjin, China
| | - Yu Yuan
- Department of Ultrasound, Tianjin Hospital, Tianjin, China
| | - Ke-Tong Gong
- Department of Hand microsurgery, Tianjin Hospital, Tianjin, China
| | - Xin-Long Ma
- Department of Orthopaedic Surgery, Tianjin Hospital, Tianjin, China
| | - Xin Chen
- EMG Room, Tianjin Hospital, Tianjin, China
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15
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Abstract
Although ganglions are the most common cause of ulnar tunnel syndrome, they are one of the rare causes of cubital tunnel syndrome (CuTS). In this article, we report a 49-year-old female patient admitted to the outpatient clinic complaining of numbness and tingling in the ring and little fingers of the right hand. There was no history of systemic disease or previous trauma. The patient was diagnosed with CuTS in the light of clinical examination and nerve conduction studies. Simple cubital tunnel decompression was performed under general anesthesia and microsurgical exploration revealed a 2x2 cm epineural ganglion cyst compressing the ulnar nerve. The cyst was excised without damaging the ulnar nerve and cutaneous nerves. Histopathology also confirmed the ganglion cyst. In the postoperative period, the patient's clinical improvement was more satisfactory than nerve conduction studies. The diagnosis of CuTS is established by physical examination, provocative test, and nerve conduction studies. In patients who cannot achieve a satisfactory outcome by conservative treatment, the cyst should be kept in mind among etiologic factors. Magnetic resonance imaging should be requested for accurate diagnosis and preoperative surgical planning.
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Abstract
PURPOSE OF REVIEW Compressive neuropathy of the ulnar nerve across the elbow is a common diagnosis encountered frequently within a hand and upper extremity clinical practice. Appropriate and timely evaluation, diagnosis, objective testing, and evidence-based decisions regarding treatment options are paramount in the optimal care of the patient with this pathology. An understanding of current literature is critical in determining and understanding best practices. RECENT FINDINGS A thorough review of the recent literature regarding physical examination, diagnostic testing, and nonoperative versus operative results was performed. Regarding physical examination, the glenohumeral internal rotation test and scratch collapse test are more effective and sensitive than traditional maneuvers such as Tinel's testing and the elbow flexion test. Electrodiagnostic testing, magnetic resonance imaging, and ultrasound evaluation have all been shown to be effective in diagnosing cubital tunnel syndrome. However, no single test has proven itself to be superior. Nonoperative treatment can be successful for mild cases of cubital tunnel syndrome. Surgical release techniques comparing open with endoscopic release are equivocal, and in situ release versus transposition techniques show that transposition should not be performed routinely. The diagnosis and treatment of cubital tunnel syndrome do not have a well-defined algorithm based on current literature. The treating physician must therefore utilize the available information to determine a diagnostic and treatment plan individualized to the patient. More rigorous scientific studies are needed to determine the most effective surgical approaches for cubital tunnel syndrome.
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17
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Fiore R, Zampaglione D, Murazzi E, Bucchieri F, Cappello F, Fucarino A. The eSports conundrum: is the sports sciences community ready to face them? A perspective. J Sports Med Phys Fitness 2020; 60:1591-1602. [PMID: 32614154 DOI: 10.23736/s0022-4707.20.10892-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The reality of eSports is something much more complex than individual users playing video games. There are several characteristics that eSports have in common with traditional sports: from the spirit of competition to the structural composition of the teams, including the increase in performance with training and practice, up to the injuries and physical and psychological stress of the athlete. The number of scientific papers interested in this reality is still relatively low, although in recent years there has been a significant increase in this regard. Probably the lack of knowledge of the world of eSports by inexperts can represent an initial obstacle in the approach to this environment. Therefore, an all-round analysis of the eSports industry is fundamental: including the figures that characterize them, the different eSports disciplines, the possible physical and mental consequences for athletes. Emphasizing the similarities between electronic and non-electronic sports is essential in order to make people, and the scientific community in particular, understand how they should be considered equal to the "traditional" vision of sports especially in the need for professional medical support. The number of professional and amateur eSports players increase every day as well as the birth of professional organizations and national teams while medical monitoring seems to have fallen behind. In the near future, we hope that the scientific community and in particular the medical disciplines will be able to closely support the world of eSports to guarantee the correct assistance to all professional and non-professional athletes. An increase in the number of scientific work and specific studies will certainly bring benefits in countering physical attrition, reducing the risk of injury, in psychological support to athletes and in the fight against doping reality.
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Affiliation(s)
- Roberto Fiore
- Medical Residency Program in Sport and Exercise Medicine, University of Palermo, Palermo, Italy
| | - Domenico Zampaglione
- Medical Residency Program in Sport and Exercise Medicine, University of Palermo, Palermo, Italy
| | - Eleonora Murazzi
- Medical Residency Program in Sport and Exercise Medicine, University of Palermo, Palermo, Italy
| | - Fabio Bucchieri
- Department of Biomedicine, Neuroscience and Advanced Diagnostic (Bi.N.D.), University of Palermo, Palermo, Italy
| | - Francesco Cappello
- Medical Residency Program in Sport and Exercise Medicine, University of Palermo, Palermo, Italy - .,Department of Biomedicine, Neuroscience and Advanced Diagnostic (Bi.N.D.), University of Palermo, Palermo, Italy
| | - Alberto Fucarino
- Department of Biomedicine, Neuroscience and Advanced Diagnostic (Bi.N.D.), University of Palermo, Palermo, Italy
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18
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Schmid AB, Fundaun J, Tampin B. Entrapment neuropathies: a contemporary approach to pathophysiology, clinical assessment, and management. Pain Rep 2020; 5:e829. [PMID: 32766466 PMCID: PMC7382548 DOI: 10.1097/pr9.0000000000000829] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 05/04/2020] [Accepted: 05/30/2020] [Indexed: 12/18/2022] Open
Abstract
Entrapment neuropathies such as carpal tunnel syndrome, radiculopathies, or radicular pain are the most common peripheral neuropathies and also the most common cause for neuropathic pain. Despite their high prevalence, they often remain challenging to diagnose and manage in a clinical setting. Summarising the evidence from both preclinical and clinical studies, this review provides an update on the aetiology and pathophysiology of entrapment neuropathies. Potential mechanisms are put in perspective with clinical findings. The contemporary assessment is discussed and diagnostic pitfalls highlighted. The evidence for the noninvasive and surgical management of common entrapment neuropathies is summarised and future areas of research are identified.
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Affiliation(s)
- Annina B. Schmid
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford, United Kingdom
| | - Joel Fundaun
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford, United Kingdom
- High Country Physical Therapy, Laramie, WY, USA
| | - Brigitte Tampin
- Department of Physiotherapy, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
- School of Physiotherapy and Exercise Science, Curtin University, Western Australia, Australia
- Faculty of Business Management and Social Sciences, Hochschule Osnabrück, University of Applied Sciences, Osnabrück, Germany
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19
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Role of dynamic sonography in ulnar nerve entrapment at elbow. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2019. [DOI: 10.1186/s41983-019-0063-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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Aird C, Thoirs K, Maranna S, Massy-Westropp N. Ultrasound Measurements and Assessments of the Ulnar Nerve at the Elbow and Cubital Tunnel: A Scoping Review. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2019. [DOI: 10.1177/8756479319870467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Ulnar neuropathy at the elbow (UNE) is the second most frequent peripheral nerve entrapment neuropathy in the upper extremity. The diagnosis is determined through a combination of history, physical examination, and electrodiagnostic testing. However, the use of high-resolution sonography is increasing, with sonographic measurements of ulnar nerve dimension established as a reliable diagnostic criterion for UNE. Sonographic imaging can describe anatomical features beyond ulnar nerve size, and therefore additional observations could potentially be used in UNE diagnosis and treatment follow-up. This review was a scoping of the literature on different sonographic measurements and assessments that have been reported to evaluate the ulnar nerve and cubital tunnel. This should provide a guide to scanning protocols for sonographers.
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Affiliation(s)
- Courtney Aird
- The University of South Australia, Adelaide, South Australia, Australia
| | - Kerry Thoirs
- International Centre for Allied Health Evidence (iCAHE), University of South Australia, Adelaide, South Australia, Australia
| | - Sandhya Maranna
- Cancer Research Institute, University of South Australia, Adelaide, South Australia, Australia
| | - Nicola Massy-Westropp
- International Centre for Allied Health Evidence (iCAHE), University of South Australia, Adelaide, South Australia, Australia
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21
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Xiao TG, Cartwright MS. Ultrasound in the Evaluation of Radial Neuropathies at the Elbow. Front Neurol 2019; 10:216. [PMID: 30930836 PMCID: PMC6423902 DOI: 10.3389/fneur.2019.00216] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 02/19/2019] [Indexed: 12/24/2022] Open
Abstract
There are five sites at which radial nerve entrapment at the elbow has been commonly reported. These include the level of the fibrous bands within the extensor carpi radialis brevis, the thickened fascial tissue at the radiocapitellar joint, the leash of Henry, the arcade of Frohse, and the distal border of the supinator muscle. This review describes the anatomy of the radial nerve at the elbow and the surrounding structures, and then provides an overview of the literature supporting the use of ultrasound to assist in the evaluation of suspected radial neuropathy at the elbow. This review concludes with a suggested ultrasonographic approach for the systematic evaluation of suspected radial neuropathy at the elbow.
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Affiliation(s)
- Ted G Xiao
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Michael S Cartwright
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, United States
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22
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Diagnostic sensitivity of electrophysiology and ultrasonography in ulnar neuropathies of different severity. Clin Neurophysiol 2019; 130:297-302. [DOI: 10.1016/j.clinph.2018.11.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 11/12/2018] [Accepted: 11/22/2018] [Indexed: 11/21/2022]
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23
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Affiliation(s)
- Luke Geoghegan
- Hand Surgery Research Group, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Justin C R Wormald
- Hand Surgery Research Group, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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24
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Walker FO, Cartwright MS, Alter KE, Visser LH, Hobson-Webb LD, Padua L, Strakowski JA, Preston DC, Boon AJ, Axer H, van Alfen N, Tawfik EA, Wilder-Smith E, Yoon JS, Kim BJ, Breiner A, Bland JDP, Grimm A, Zaidman CM. Indications for neuromuscular ultrasound: Expert opinion and review of the literature. Clin Neurophysiol 2018; 129:2658-2679. [PMID: 30309740 DOI: 10.1016/j.clinph.2018.09.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/10/2018] [Accepted: 09/02/2018] [Indexed: 12/11/2022]
Abstract
Over the last two decades, dozens of applications have emerged for ultrasonography in neuromuscular disorders. We wanted to measure its impact on practice in laboratories where the technique is in frequent use. After identifying experts in neuromuscular ultrasound and electrodiagnosis, we assessed their use of ultrasonography for different indications and their expectations for its future evolution. We then identified the earliest papers to provide convincing evidence of the utility of ultrasound for particular indications and analyzed the relationship of their date of publication with expert usage. We found that experts use ultrasonography often for inflammatory, hereditary, traumatic, compressive and neoplastic neuropathies, and somewhat less often for neuronopathies and myopathies. Usage significantly correlated with the timing of key publications in the field. We review these findings and the extensive evidence supporting the value of neuromuscular ultrasound. Advancement of the field of clinical neurophysiology depends on widespread translation of these findings.
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Affiliation(s)
- Francis O Walker
- Department of Neurology at Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA.
| | - Michael S Cartwright
- Department of Neurology at Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA.
| | - Katharine E Alter
- Department of Rehabilitation Medicine, National INeurolnstitutes of Health, Bethesda, MD 20892, USA.
| | - Leo H Visser
- Departments of Neurology and Clinical Neurophysiology, Elisabeth-Tweesteden Hospital, Tilburg, The Netherlands.
| | - Lisa D Hobson-Webb
- Department of Neurology, Neuromuscular Division, Duke University School of Medicine, Durham, NC, USA.
| | - Luca Padua
- Don Carlo Gnocchi ONLUS Foundation, Piazzale Rodolfo Morandi, 6, 20121 Milan, Italy; Department of Geriatrics, Neurosciences and Orthopaedics, Universita Cattolica del Sacro Cuore, Rome, Italy.
| | - Jeffery A Strakowski
- Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, OH, USA; Department of Physical Medicine and Rehabilitation, OhioHealth Riverside Methodist Hospital, Columbus, OH, USA; OhioHealth McConnell Spine, Sport and Joint Center, Columbus, OH, USA.
| | - David C Preston
- Neurological Institute, University Hospitals, Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA.
| | - Andrea J Boon
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA.
| | - Hubertus Axer
- Hans Berger Department of Neurology, Jena University Hospital, Jena 07747, Germany.
| | - Nens van Alfen
- Department of Neurology and Clinical Neurophysiology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Eman A Tawfik
- Department of Physical Medicine & Rehabilitation, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
| | - Einar Wilder-Smith
- Department of Neurology, Yong Loo Lin School of Medicine, National University Singapore, Singapore; Department of Neurology, Kantonsspital Lucerne, Switzerland; Department of Neurology, Inselspital Berne, Switzerland.
| | - Joon Shik Yoon
- Department of Physical Medicine and Rehabilitation, Korea University Guro Hospital, Seoul, Republic of Korea.
| | - Byung-Jo Kim
- Department of Neurology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Ari Breiner
- Division of Neurology, Department of Medicine, The Ottawa Hospital and University of Ottawa, Canada.
| | - Jeremy D P Bland
- Deparment of Clinical Neurophysiology, East Kent Hospitals University NHS Foundation Trust, Canterbury, Kent, UK.
| | - Alexander Grimm
- Department of Neurology, University Hospital Tuebingen, Tuebingen, Germany.
| | - Craig M Zaidman
- Division of Neuromuscular Medicine, Department of Neurology, Washington University in St. Louis, 660 S. Euclid Ave, Box 8111, St. Louis, MO 63110, USA.
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25
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Alrajeh M, Preston DC. Neuromuscular ultrasound in electrically non-localizable ulnar neuropathy. Muscle Nerve 2018; 58:655-659. [PMID: 29981241 DOI: 10.1002/mus.26291] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2018] [Indexed: 12/20/2022]
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.
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Affiliation(s)
- Mohammad Alrajeh
- Neurological Institute, University Hospitals Cleveland Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, Ohio, 44106-5098, USA
| | - David C Preston
- Neurological Institute, University Hospitals Cleveland Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, Ohio, 44106-5098, USA
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26
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Colorado BS, Osei DA. Prevalence of carpal tunnel syndrome presenting with symptoms in an ulnar nerve distribution: A prospective study. Muscle Nerve 2018; 59:60-63. [PMID: 30051917 DOI: 10.1002/mus.26310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 07/22/2018] [Accepted: 07/24/2018] [Indexed: 01/17/2023]
Abstract
INTRODUCTION Patients presenting with symptoms of pain/paresthesias primarily in an ulnar nerve distribution may be noted to have exclusive median mononeuropathy at the wrist on subsequent electrodiagnostic testing. There has been limited research looking at the prevalence of this clinical presentation. METHODS A cohort of adults were surveyed to assess for severity and localization of hand symptoms using the Katz hand diagram and Boston Carpal Tunnel Questionnaire Symptoms Severity Scale. Thirty volunteers met our case definition for ulnar neuropathy and underwent a standardized physical examination, electrodiagnostic testing, and nerve ultrasound. RESULTS Eleven of 30 subjects (37%) were found to have exclusive median mononeuropathy at the wrist. DISCUSSION Carpal tunnel syndrome should remain high on the differential for patients presenting with symptoms of pain/paresthesias primarily in an ulnar nerve distribution. Muscle Nerve 59:60-63, 2019.
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Affiliation(s)
- Berdale S Colorado
- Department of Orthopedic Surgery, Washington University School of Medicine, Campus Box 8233, 425 South Euclid Avenue, St. Louis, Missouri, USA.,Department of Neurology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Daniel A Osei
- Department of Orthopedic Surgery, Washington University School of Medicine, Campus Box 8233, 425 South Euclid Avenue, St. Louis, Missouri, USA
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Haghighat S, Mahmoodian AE, Kianimehr L. Normative Ulnar Nerve Conduction Study: Comparison of Two Measurement Methods. Adv Biomed Res 2018; 7:47. [PMID: 29657932 PMCID: PMC5887689 DOI: 10.4103/abr.abr_91_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: Given the high prevalence rate of ulnar neuropathy and importance of its proper management, to have a baseline information about the normative value of motor nerve conduction of first dorsal interosseous (FDI) muscle and abductor digiti minimi muscle (ADM) and their differences as well as their relation with different demographic characteristics of our population, we aimed to determine and compare the mean value of motor conduction velocity of FDI and ADM at forearm and across the elbow among the normal population. Materials and Methods: In this cross-sectional study, healthy participants were enrolled in the study. Ulnar nerve motor nerve conduction velocity (MNCV) was recorded from the ADM and the FDI at forearm and across the elbow. Mean MNCV of the ulnar nerve recorded from ADM and FDI was compared. In addition, MNCV of the ulnar nerve measured at the forearm and across the elbow was compared also. Results: During this study, 165 healthy volunteers selected and participated in the study. Mean of ulnar nerve MNCV for ADM was significantly lower than FDI, both at forearm and across the elbow (P < 0.001). Mean of ulnar nerve MNCV was significantly lower at forearm comparing than elbow level for both ADM and FDI (P < 0.001). Conclusion: The findings of the current study provide us a baseline data regarding the normative mean value of ulnar nerve MNCV in different locations, which could be used for providing an appropriate diagnostic protocol for ulnar nerve neuropathy. However, further studies among patients suspected with ulnar nerve neuropathy are needed.
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Affiliation(s)
- Shila Haghighat
- Department of Physical Medicine and Rehabilitation, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Amir Ebrahim Mahmoodian
- Department of Physical Medicine and Rehabilitation, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Lida Kianimehr
- Department of Physical Medicine and Rehabilitation, Isfahan University of Medical Sciences, Isfahan, Iran
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28
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Shi M, Qi H, Ding H, Chen F, Xin Z, Zhao Q, Guan S, Shi H. Electrophysiological examination and high frequency ultrasonography for diagnosis of radial nerve torsion and compression. Medicine (Baltimore) 2018; 97:e9587. [PMID: 29480857 PMCID: PMC5943862 DOI: 10.1097/md.0000000000009587] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/19/2017] [Accepted: 12/19/2017] [Indexed: 02/05/2023] Open
Abstract
This study aims to evaluate the value of electrophysiological examination and high frequency ultrasonography in the differential diagnosis of radial nerve torsion and radial nerve compression.Patients with radial nerve torsion (n = 14) and radial nerve compression (n = 14) were enrolled. The results of neurophysiological and high frequency ultrasonography were compared.Electrophysiological examination and high-frequency ultrasonography had a high diagnostic rate for both diseases with consistent results. Of the 28 patients, 23 were positive for electrophysiological examination, showing decreased amplitude and decreased conduction velocity of radial nerve; however, electrophysiological examination cannot distinguish torsion from compression. A total of 27 cases showed positive in ultrasound examinations among all 28 cases. On ultrasound images, the nerve was thinned at torsion site whereas thickened at the distal ends of torsion. The diameter and cross-sectional area of torsion or compression determined the nerve damage, and ultrasound could locate the nerve injury site and measure the length of the nerve.Electrophysiological examination and high-frequency ultrasonography can diagnose radial neuropathy, with electrophysiological examination reflecting the neurological function, and high-frequency ultrasound differentiating nerve torsion from compression.
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Affiliation(s)
- Miao Shi
- Department of Ultrasound, Qianfoshan Hospital Affiliated to Shandong University, Jinan
- Department of Ultrasound, Liaocheng People's Hospital, Taishan Medical University, Shandong
| | - Hengtao Qi
- Department of Ultrasound, Shandong Medical Imaging Research Institute, Shandong University, Jinan
| | - Hongyu Ding
- Department of Ultrasound, Qianfoshan Hospital Affiliated to Shandong University, Jinan
| | - Feng Chen
- EMG Laboratory, Liaocheng People's Hospital
| | - Zhaoqin Xin
- Department of Ultrasound, Liaocheng People's Hospital, Taishan Medical University, Shandong
| | - Qinghua Zhao
- Department of Ultrasound, Liaocheng People's Hospital, Taishan Medical University, Shandong
| | - Shibing Guan
- Hand Surgery of Provincial Hospital Affiliated to Shandong University, Jinan
| | - Hao Shi
- Department of Radiology, Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
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29
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Pisapia JM, Ali ZS, Hudgins ED, Khoury V, Heuer GG, Zager EL. Ultrasonography Detects Ulnar Nerve Dislocation Despite Normal Electrophysiology and Magnetic Resonance Imaging. World Neurosurg 2017; 99:809.e1-809.e5. [PMID: 28089807 DOI: 10.1016/j.wneu.2017.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/01/2017] [Accepted: 01/03/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Dislocation of the ulnar nerve (UN) occurs in a subset of patients with ulnar neuropathy. Electrodiagnostic and magnetic resonance imaging (MRI) studies are performed to support the clinical diagnosis. We report the case of a patient with ulnar neuropathy with normal electrodiagnostic and MRI studies but with ultrasonography (US) showing UN dislocation, which prompted successful treatment by UN submuscular transposition. CASE DESCRIPTION A healthy 15-year-old female softball player presented with right medial elbow pain and paresthesias of the fourth and fifth digits. She had 4+/5 strength in the right hand intrinsic muscles and a Tinel sign at the right elbow. A snap was palpated at the elbow upon flexion. MRI showed mild common flexor tendonitis, and electrodiagnostic studies showed normal motor responses and no conduction block at the elbow. High-resolution US showed dislocation of the UN over the medial epicondyle. UN dislocation was confirmed intraoperatively, and, after UN submuscular transposition, the patient reported complete resolution of her preoperative symptoms at 6-week follow-up and continued resolution at 1 year. CONCLUSIONS Normal findings on electrodiagnostic or MRI studies should not immediately dissuade surgeons from operating on a symptomatic patient with a clinical examination supporting ulnar neuropathy and with US evidence of UN dislocation, because such a patient may experience postoperative symptom relief. Furthermore, the dynamic capability of US imaging complements data obtained from electrodiagnostic and MRI studies, especially when these tests are normal, and it should be considered by clinicians when evaluating patients with medial elbow pain or signs of ulnar neuropathy.
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Affiliation(s)
- Jared M Pisapia
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| | - Zarina S Ali
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Eric D Hudgins
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Viviane Khoury
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gregory G Heuer
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Neurosurgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Eric L Zager
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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30
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Toia F, Gagliardo A, D'Arpa S, Gagliardo C, Gagliardo G, Cordova A. Preoperative evaluation of peripheral nerve injuries: What is the place for ultrasound? J Neurosurg 2016; 125:603-14. [DOI: 10.3171/2015.6.jns151001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
The purpose of this study was to evaluate the usefulness of ultrasound in the preoperative workup of peripheral nerve lesions and illustrate how nerve ultrasonography can be integrated in routine clinical and neurophysiological evaluation and in the management of focal peripheral nerve injuries. The diagnostic role and therapeutic implications of ultrasonography for different neuropathies are described.
METHODS
The authors analyzed the use of ultrasound in 119 entrapment, tumoral, posttraumatic, or postsurgical nerve injuries of limbs evaluated in 108 patients during 2013 and 2014. All patients were candidates for surgery, and in all cases the evaluation included clinical examination, electrodiagnostic studies (nerve conduction study and electromyography), and ultrasound nerve study.
Ultrasound was used to explore the nerve fascicular echotexture, continuity, and surrounding tissues. The maximum cross-sectional area (CSA) and the presence of epineurial hyperechogenicity or intraneural hyper- or hypoechogenicity, of anatomical anomalies, dynamic nerve dislocations, or compressions were recorded.
The concordance rate of neurophysiological and ultrasonographic data was analyzed, classifying ultrasound findings as confirming, contributive, or nonconfirming with respect to electrodiagnostic data. The correlation between maximum nerve CSA and neurophysiological severity degree in entrapment syndromes was statistically analyzed.
RESULTS
Ultrasonography confirmed electrodiagnostic findings in 36.1% of cases and showed a contributive role in the diagnosis and surgical planning in 53.8% of all cases; the findings were negative (“nonconfirming”) in only 10.1% of the patients. In 16% of cases, ultrasound was not only contributive, but had a key diagnostic role in the presence of doubtful electrodiagnostic findings. The contributive role differed according to etiology, being higher for tumors (100%) and for posttraumatic or postsurgical neuropathies (72.2%) than for entrapment neuropathies (43.8%).
CONCLUSIONS
Ultrasound is a powerful, noninvasive tool for the examination of peripheral nerve injuries, and can guide diagnosis of and surgical strategy for focal peripheral nerve injuries. It allows direct visualization of the cause and extent of nerve lesions and finds its place between electrodiagnostic tests and exploratory surgery. It can provide invaluable information, such as the presence and extent of a mass, scar compression, or neuromas. The authors recommend it as a complement to routine clinical and neurophysiological evaluation and as the first-line imaging modality for masses of suspected nerve origin.
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Affiliation(s)
- Francesca Toia
- 1Plastic and Reconstructive Surgery, Department of Surgical, Oncological, and Oral Sciences, and
| | | | - Salvatore D'Arpa
- 1Plastic and Reconstructive Surgery, Department of Surgical, Oncological, and Oral Sciences, and
| | - Cesare Gagliardo
- 3Section of Radiological Sciences, Department of Biopathology and Medical Biotechnologies, University of Palermo; and
| | | | - Adriana Cordova
- 1Plastic and Reconstructive Surgery, Department of Surgical, Oncological, and Oral Sciences, and
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Roberts GL, Maclean AD, Logan AJ. Ulna Nerve Decompression at the Elbow in Patients with Normal Nerve Conduction Tests. ACTA ACUST UNITED AC 2016; 20:260-5. [PMID: 26051766 DOI: 10.1142/s0218810415500215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Ulna nerve compression at the elbow is the second most common neuropathy of the upper limb. It has been suggested that nerve conduction tests are required to correctly make the diagnosis. The aim of this study was to assess whether patients with normal nerve conduction testing benefitted from surgical release of the ulna nerve. METHODS 56 patients with symptoms of ulna nerve compression at the elbow were evaluated prospectively. All patients underwent electrophysiology testing followed by ulna nerve decompression irrespective of the results of the electrophysiology testing. Functional scores using the QuickDASH and PEM score were collected up to 12 months post-surgery. RESULTS No difference was found between the group with normal and the group with abnormal electrophysiology studies. CONCLUSIONS We conclude that patients who clinically have ulna nerve compression still benefit from ulna nerve decompression despite normal nerve conduction tests.
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Affiliation(s)
- Gareth L Roberts
- 1 Department of Hand Surgery, University Hospital of Wales, Cardiff, UK
| | - Angus D Maclean
- 1 Department of Hand Surgery, University Hospital of Wales, Cardiff, UK
| | - Andrew J Logan
- 1 Department of Hand Surgery, University Hospital of Wales, Cardiff, UK
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Ding WQ, Gu JH, Yuan Y, Jin DS. Stereoscopic Display of the Peripheral Nerves at the Elbow Region Based on MR Diffusion Tensor Imaging with Multiple Post-Processing Methods. IRANIAN JOURNAL OF RADIOLOGY 2016; 13:e22144. [PMID: 27110337 PMCID: PMC4836049 DOI: 10.5812/iranjradiol.22144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 08/23/2014] [Accepted: 08/30/2014] [Indexed: 11/30/2022]
Abstract
Background: Peripheral nerves at the elbow region are prone to entrapment neuropathies and injuries. To make accurate assessment, clinicians need stereoscopic display of the nerves to observe them at all angles. Objectives: To obtain a stereoscopic display of the peripheral nerves at the elbow region based on magnetic resonance (MR) diffusion tensor imaging (DTI) data using three post-processing methods of volume rendering (VR), maximum intensity projection (MIP), and fiber tractography, and to evaluate the difference and correlation between them. Subjects and Methods: Twenty-four elbows of 12 healthy young volunteers were assessed by 20 encoding diffusion direction MR DTI scans. Images belonging to a single direction (anterior-posterior direction, perpendicular to the nerve) were subjected to VR and MIP reconstruction. All raw DTI data were transferred to the Siemens MR workstation for fiber tractography post-processing. Imaging qualities of fiber tractography and VR/MIP were evaluated by two observers independently based on a custom evaluation scale. Results: Stereoscopic displays of the nerves were obtained in all 24 elbows by VR, MIP, and fiber tractography post-processing methods. The VR/MIP post-processing methods were easier to perform compared to fiber tractography. There was no significant difference among the scores of fiber tracking and VR/MIP reconstruction for single direction. The imaging quality scores of fiber tractography and VR/MIP were significantly correlated based on intraclass correlation coefficient (ICC) analysis (ICC ranged 0.709 - 0.901), which suggested that the scores based on fiber tractography and VR/MIP for the same sample were consistent. Inter- and intraobserver agreements were good to excellent. Conclusion: Stereoscopic displays of the peripheral nerves at the elbow region can be achieved by using VR, MIP, and fiber tracking post-processing methods based on raw DTI images. VR and MIP reconstruction could be used as preview tools before fiber tracking to determine whether the raw images are satisfactory.
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Affiliation(s)
- Wen Quan Ding
- Department of Hand Surgery, Ningbo No.6 Hospital, Ningbo University, Ningbo, China
| | - Jian Hui Gu
- Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Yong Yuan
- Department of Radiology, Jiangsu Province Official Hospital, Jiangsu Jiankang Vocational College, Nanjing, China
| | - Dong Sheng Jin
- Department of Radiology, Jiangsu Province Official Hospital, Jiangsu Jiankang Vocational College, Nanjing, China
- Corresponding author: Dong Sheng Jin, Department of Radiology, Jiangsu Province Official Hospital, Jiangsu Jiankang Vocational College, Nanjing, China. Tel: +86-02583712838-3067, Fax: +86-02586631726, E-mail:
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Lee SU, Kim MW, Kim JM. Ultrasound Diagnosis of Double Crush Syndrome of the Ulnar Nerve by the Anconeus Epitrochlearis and a Ganglion. J Korean Neurosurg Soc 2016; 59:75-7. [PMID: 26885291 PMCID: PMC4754593 DOI: 10.3340/jkns.2016.59.1.75] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/02/2014] [Accepted: 12/31/2014] [Indexed: 02/06/2023] Open
Abstract
Double compression of the ulnar nerve, including Guyon's canal syndrome associated with cubital tunnel syndrome caused by the anconeus epitrochlearis muscle, is a very rare condition. We present a case of double crush syndrome of the ulnar nerve at the wrist and elbow in a 55-year-old man, as well as a brief review of the literature. Although electrodiagnostic findings were consistent with an ulnar nerve lesion only at the elbow, ultrasonography revealed a ganglion compressing the ulnar nerve at the hypothenar area and the anconeus epitrochlearis muscle lying in the cubital tunnel. Careful physical examination and ultrasound assessment of the elbow and wrist confirmed the clinical diagnosis prior to surgery.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedics, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Min-Wook Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Jae Min Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
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Abstract
Disorders of peripheral nerve have been traditionally diagnosed and monitored using clinical and electrodiagnostic approaches. The last two decades have seen rapid development of both magnetic resonance imaging (MRI) and ultrasound imaging of peripheral nerve, such that these imaging modalities are increasingly invaluable to the diagnosis of patients with peripheral nerve disorders. Peripheral nerve imaging provides information which is supplementary to clinical and electrodiagnostic diagnosis. Both MRI and ultrasound have particular benefits in specific clinical circumstances and can be considered as complementary techniques. These technologic developments in peripheral nerve imaging will usher in an era of multimodality assessment of peripheral nerve disorders, with clinical evaluations supported by anatomic information from imaging, and functional information from electrodiagnostic studies. Such a multimodality approach will improve the accuracy and efficiency of patient care.
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Affiliation(s)
- Neil G Simon
- St Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Jason Talbott
- Department of Radiology, University of California, San Francisco, CA, USA
| | - Cynthia T Chin
- Department of Radiology, University of California, San Francisco, CA, USA
| | - Michel Kliot
- Department of Neurological Surgery, Northwestern Feinberg School of Medicine, Chicago, IL, USA.
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Kerasnoudis A, Tsivgoulis G. Nerve Ultrasound in Peripheral Neuropathies: A Review. J Neuroimaging 2015; 25:528-38. [PMID: 25996962 DOI: 10.1111/jon.12261] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 04/06/2015] [Indexed: 12/12/2022] Open
Abstract
Peripheral neuropathies are one of the most common reasons for seeking neurological care in everyday practice. Electrophysiological studies remain fundamental for the diagnosis and etiological classification of peripheral nerve impairment. The recent technological development though of high resolution ultrasound has allowed the clinician to obtain detailed structural images of peripheral nerves. Nerve ultrasound mainly focuses on the evaluation of the cross sectional area, cross sectional area variability along the anatomical course, echogenity, vascularity and mobility of the peripheral nerves. An increase of the cross sectional area, hypervascularity, disturbed fascicular echostructure and reduced nerve mobility are some of the most common findings of entrapments neuropathies, such as the carpal or cubital tunnel syndrome. Both the cross-sectional area increase and the hypervascularity detected with the Doppler technique seem to correlate significantly with the clinical and electrophysiological severity of the later mononeuropathies. Significantly greater cross sectional area values of the clinically affected cervical nerve root are often detected in cases of cervical radiculopathy. In such cases, the ultrasound findings seem also to correlate significantly with disease duration. On the other hand, multifocal cross sectional area enlargement of cervical roots and/or peripheral nerves is often documented in cases of immune-mediated neuropathies. None of the later pathological ultrasound findings seem to correlate significantly with the electrophysiological parameters or the functional disability. The aim of this review is to provide a timely update on the role of neuromuscular ultrasound in the diagnostic of the most common entrapment and immune-mediated peripheral neuropathies in clinical practice.
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Affiliation(s)
| | - Georgios Tsivgoulis
- Second Department of Neurology, University of Athens, School of Medicine, "Attikon" University Hospital, Athens, Greece.,International Clinical Research Center, St. Anne's University Hospital in Brno, Brno, Czech Republic
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Ghanei ME, Karami M, Zarezadeh A, Sarrami AH. Usefulness of combination of grey-scale and color Doppler ultrasound findings in the diagnosis of ulnar nerve entrapment syndrome. JOURNAL OF RESEARCH IN MEDICAL SCIENCES : THE OFFICIAL JOURNAL OF ISFAHAN UNIVERSITY OF MEDICAL SCIENCES 2015; 20:342-5. [PMID: 26109988 PMCID: PMC4468448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 10/09/2014] [Accepted: 03/09/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND Ulnar nerve entrapment (UNE) has been diagnosed with clinical examination and electrodiagnostic studies. This study was designed to determine the value of a combination of grey-scale and color Doppler ultrasound findings in the diagnosis of patients with UNE. MATERIALS AND METHODS During May to August 2013 41 patients with UNE (proven by electrodiagnostic studies) and 44 healthy volunteers were evaluated by ultrasound study. Three cross-sectional area (CSA) of ulnar nerve around cubital fossa was determined and measured in both groups. The maximum and minimum diameter of ulnar nerve was measured for calculating flattening ratio index (FRI). Vascularity of ulnar nerve around cubital fossa was also examined in proper color Doppler setting. RESULTS The mean CSA of nerve at all proximal, middle and distal levels were greater in patients with UNE than in controls (P = 0.02, <0.001 and 0.34 respectively). A cut-off point of 10.5 mm(2) for CSA (in the level of the cubital fossa) yielded a sensitivity and specificity of 92.7% and 93.2%, respectively. Mean FRI was 3.1 ± 0.6 in patients with UNE group and 1.4 ± 0.2 in the control group with a significant difference (P < 0.001). FRI with cutoff point 2.15 has been shown as an important parameter for the detection of UNE. The vascularity in UNE has a sensitivity and specificity of 66% and 93.2%, respectively, and has a higher probability of being positive in severe UNE. CONCLUSION Combination of grey-scale and color Doppler ultrasound may provide valuable diagnostic criteria and severity assessment of UNE.
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Affiliation(s)
- Mohammad Ebrahim Ghanei
- Department of Radiology, Isfahan University of Medical Sciences, Isfahan, Iran,Address for correspondence: Dr. Mohammad Ebrahim Ghanei, Department of Radiology, Alzahra Hospital, Isfahan University of Medical Sciences, Soffe Ave, Isfahan, Iran. E-mail:
| | - Mehdi Karami
- Department of Radiology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abolghasem Zarezadeh
- Department of Orthopedic Surgery, Isfahan University of Medical Sciences, Isfahan, Iran
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Abstract
PURPOSE OF REVIEW The purpose of this study is to review advances in magnetic resonance (MR)-neurography and nerve-ultrasound for the precise visualization and localization of nerve lesions not only in nerve trauma or mass lesions, but also in entrapment-related and spontaneously occurring intrinsic neuropathies. These advances may improve the understanding and classification of peripheral neuropathies. RECENT FINDINGS Diagnostic studies of MR-neurography and high-resolution ultrasound in entrapment-neuropathies consistently report accurate determination and localization of symptomatic nerve entrapment. Additionally, the longitudinal sampling of nerve-T2-signal over larger areas of coverage has become technically feasible. With this approach, more complex patterns of spatial lesion dispersion in nonfocal neuropathies could be observed with reliable lesion image contrast at the level of individual nerve fascicles. Imaging detection of fascicular lesions allows for more accurate localization, because fascicular lesion types represent a specific pitfall for clinical-electrophysiological examinations. Fascicular hypoechogenicity of high-resolution ultrasound is the correlate of nerve-T2-signal lesions, but contrast is inferior and difficult to quantify. Therefore, nerve enlargement remains the main diagnostic criterion in high-resolution ultrasound. Diffusion-tensor-MR-neurography provides quantitative estimates of fiber structure, which were shown to correlate with aging and focal entrapment. SUMMARY High-resolution nerve imaging with extended anatomical coverage is feasible and improves the topographic description of spatial lesion dispersion which is particularly relevant for the discrimination between focal and nonfocal neuropathies.
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Qing C, Zhang J, Wu S, Ling Z, Wang S, Li H, Li H. Clinical classification and treatment of cubital tunnel syndrome. Exp Ther Med 2014; 8:1365-1370. [PMID: 25289024 PMCID: PMC4186332 DOI: 10.3892/etm.2014.1983] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 04/02/2014] [Indexed: 11/21/2022] Open
Abstract
The aim of the present study was to investigate a new clinical classification of cubital tunnel syndrome that provides an improved basis for the clinical diagnosis and treatment of the disease. Retrospective analysis was performed on 341 patients with cubital tunnel syndrome. Based on the etiology, signs and symptoms, neurophysiological tests and computed tomography (CT) imaging, a new clinical classification was proposed. The patients enrolled in the study were treated according to the new classification. According to the new classification, cubital tunnel syndrome cases were divided into types I-IV. Treatment for patients with type I consisted of rest, immobilization or physiotherapy, while patients with type II received simple ulnar neurolysis. Type III patients underwent ulnar neurolysis with expansion of the ulnar nerve sulcus or ulnar nerve anterior transposition surgery. Type IV patients represented a subgroup of cubital tunnel syndrome cases caused by factors other than degenerative joint diseases, including cysts, tumors, traumatic fracture, deformity and elbow deformity. Patients of this type received appropriate surgical treatment according to the specific etiology. Based on previous classifications that relied on sensation and strength symptoms, a new clinical classification of elbow tunnel syndrome has been established in the present study that adopts a CT imaging evaluation index. The new classification is reasonable, simple and practical, and therapies based on this classification are more targeted than those based on previous classifications.
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Affiliation(s)
- Cui Qing
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Jianhua Zhang
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Shidong Wu
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Zhao Ling
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Shuanchi Wang
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Haoran Li
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
| | - Haiqing Li
- Department of Orthopaedics, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Cangzhou, Hebei 061001, P.R. China
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Seok HY, Jang JH, Won SJ, Yoon JS, Park KS, Kim BJ. Cross-sectional area reference values of nerves in the lower extremities using ultrasonography. Muscle Nerve 2014; 50:564-70. [PMID: 24639103 DOI: 10.1002/mus.24209] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 01/31/2014] [Accepted: 02/10/2014] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Cross-sectional area (CSA) reference values of lower extremity nerves using ultrasonography have only been reported in a few studies and have been limited to white populations. METHODS For this study, 94 healthy Korean volunteers were recruited for measurement of the CSA at 7 sites of lower extremity nerves. The side-to-side difference in CSA was calculated for each nerve, and reference ranges were derived. External validity evaluation for the reference values was performed with 10 newly recruited volunteers at a different institution. RESULTS Nerve CSA was correlated significantly with body mass index, weight, and height; however, the absolute value of the side-to-side difference had no significant correlation with demographic factors. The external validity was adequate for all sites, ranging from 80% to 100%. CONCLUSIONS The lower extremity nerve CSA values obtained in this study may provide normal reference values for the Asian population.
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Affiliation(s)
- Hung Youl Seok
- Department of Neurology, Korea University College of Medicine, Seoul, #73, Inchon-ro, Seongbuk-gu, Seoul, 136-705, South Korea
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Simon NG, Ralph JW, Poncelet AN, Engstrom JW, Chin C, Kliot M. A comparison of ultrasonographic and electrophysiologic 'inching' in ulnar neuropathy at the elbow. Clin Neurophysiol 2014; 126:391-8. [PMID: 24962009 DOI: 10.1016/j.clinph.2014.05.023] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/30/2014] [Accepted: 05/10/2014] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The present study aimed to clarify the relationship between structural ulnar nerve changes and electrophysiological nerve dysfunction in patients with ulnar neuropathy at the elbow (UNE). METHODS High-resolution ultrasonography of the ulnar nerve was performed on 17 limbs with clinically and electrophysiologically confirmed UNE, and 52 control subjects at four standardised sites proximal and distal to the medial epicondyle (P2, P1, D1, D2), corresponding to segments of ulnar short-segment nerve conduction studies ("inching studies"). RESULTS Ulnar nerve cross-sectional area (CSA) and hypoechoic fraction were significantly increased in patients with UNE immediately distal (D1) and proximal (P1) to the medial epicondyle (p<0.01). In patients with UNE, hypoechoic fraction was similar in asymptomatic and symptomatic limbs. Motor nerve conduction velocity across the elbow correlated with CSAmax and the maximum hypoechoic fraction (R=0.6, p<0.05). CSA and hypoechoic fraction of individual segments did not correlate with corresponding latencies on inching studies, but latencies across the D1 segment correlated with CSA at P1 (R=0.80, p<0.0001) and D2 (R=0.65, p<0.01). CONCLUSIONS Sonographic abnormalities in UNE may not be maximal at the site of electrophysiological nerve dysfunction. SIGNIFICANCE Sonographic abnormalities may reflect secondary pathophysiological changes in segments adjacent to regions of nerve compression.
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Affiliation(s)
- Neil G Simon
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States; Neuroscience Research Australia and Prince of Wales Clinical School, University of New South Wales, Randwick, NSW, Australia.
| | - Jeffrey W Ralph
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States
| | - Ann N Poncelet
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States
| | - John W Engstrom
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States
| | - Cynthia Chin
- Department of Radiology, University of California, San Francisco, San Francisco, CA, United States
| | - Michel Kliot
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, United States
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Kim KH, Byun EJ, Oh EH. Ultrasonographic findings of superficial radial nerve and cephalic vein. Ann Rehabil Med 2014; 38:52-6. [PMID: 24639926 PMCID: PMC3953363 DOI: 10.5535/arm.2014.38.1.52] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 09/25/2013] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To investigate the anatomic relationship between the superficial radial nerve (SRN) and the cephalic vein (CV) through ultrasonography due to the possibility of SRN injury during cephalic venipuncture. METHODS Both forearms of 51 healthy volunteers with no history of trauma or surgery were examined in proximal to distal direction using ultrasonography. We measured the distance between the radial styloid process (RSP) and the point where the SRN begins contact with the CV, and measured the distance between the RSP and the point where the SRN is separated from the CV. The point where the SRN penetrates the brachioradialis fascia was also evaluated. RESULTS The SRN came in contact with the CV at a mean of 9.35±1.05 cm from the RSP and separated from the CV at a mean of 6.29±1.17 cm from the RSP. The SRN pierced the brachioradialis fascia at a mean of 10.31±0.89 cm from the RSP and horizontally 1.35±0.36 cm medial to the radius margin. All parameters had no significant differences in gender or direction. CONCLUSION The SRN had close approximation to the CV in the distal second quarter of the forearm. We recommend for cephalic venipuncture to be avoided in this area, and, if needed, it should be carried out with care not to cause injury to the SRN.
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Affiliation(s)
- Ki Hoon Kim
- Department of Physical and Rehabilitation Medicine, Veterans Health Service Medical Center, Seoul, Korea
| | - Eun Jin Byun
- Department of Physical and Rehabilitation Medicine, Veterans Health Service Medical Center, Seoul, Korea
| | - Eun Hyun Oh
- Department of Physical and Rehabilitation Medicine, Veterans Health Service Medical Center, Seoul, Korea
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Yalcin E, Unlu E, Akyuz M, Karaahmet OZ. Ultrasound diagnosis of ulnar neuropathy: comparison of symptomatic and asymptomatic nerve thickness. J Hand Surg Eur Vol 2014; 39:167-71. [PMID: 23592536 DOI: 10.1177/1753193413484627] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
There is still no consensus on a normal value for the cross-sectional area of the ulnar nerve at the elbow. Such data would be valuable for the ultrasound diagnosis of ulnar neuropathy. Comparison of the symptomatic and contralateral asymptomatic sides has been recommended. The aim of this study was to investigate whether or not the asymptomatic ulnar nerve could be a reference value. High-resolution ultrasonic measurements of the cross-sectional areas of the ulnar nerves at the elbow were compared with 38 contralateral asymptomatic elbows of patients with unilateral ulnar neuropathy and 38 healthy controls. There were significant differences in the cross-sectional areas at all levels between the healthy control subjects and asymptomatic side of the ulnar neuropathy patients (p < 0.05). The findings of this study suggest that there is a limitation in using the asymptomatic side for obtaining reference values in ultrasonographic studies. Each ultrasonographic laboratory should determine its own reference values.
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Affiliation(s)
- E Yalcin
- 1Department of Physical Medicine and Rehabilitation, Ankara Physical Medicine & Rehabilitation Training and Research Hospital of the Ministry of Health, Ankara, Turkey
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43
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Sonographic measurements of the ulnar nerve at the elbow with different degrees of elbow flexion. PM R 2014; 6:395-9. [PMID: 24389386 DOI: 10.1016/j.pmrj.2013.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether there were differences in the cross-sectional area (CSA) and the flattening ratio of the normative ulnar nerve as it passes between the medial epicondyle and the olecranon at 30° of elbow flexion versus 90° of elbow flexion. DESIGN Bilateral upper extremities of normal healthy adult volunteers were evaluated with ultrasound. The CSA and the flattening ratio of the ulnar nerve at the elbow as it passes between the medial epicondyle and the olecranon were measured, with the elbow flexed at 30° and at 90°, by 2 operators with varying ultrasound scanning experience by using ellipse and direct tracing methods. The results from the 2 different angles of elbow flexion were compared for each individual operator. Finally, intraclass correlations for absolute agreement and consistency between the 2 raters were calculated. SETTING An outpatient clinic room at a regional rehabilitation center. PARTICIPANTS Twenty-five normal healthy adult volunteers. MAIN OUTCOME MEASUREMENT The mean CSA and the mean flattening ratio of the ulnar nerve at 30° of elbow flexion and at 90° of elbow flexion. RESULTS First, for the ellipse method, the mean CSA of the ulnar nerve at 90° (9.93 mm(2)) was slightly larger than at 30° (9.77 mm(2)) for rater 1. However, for rater 2, the mean CSA of the ulnar nerve at 90° (6.80 mm(2)) was slightly smaller than at 30° (7.08 mm(2)). This was found to be statistically insignificant when using a matched pairs t test and the Wilcoxon signed-rank test, with a significance level of .05. Similarly, the difference between the right side and the left side was not statistically significant. The intraclass correlations for absolute agreement between the 2 raters were not very high due to different measurement locations, but the intraclass correlations for consistency were high. Second, for the direct tracing method, the mean CSA at 90° (7.26 mm(2)) was slightly lower than at 30° (7.48 mm(2)). This was found to be statistically nonsignificant when using the matched pairs t test and the Wilcoxon signed-rank test with a significance level of .05. There was no significant difference in the average flattening ratio between the 2 angles for the left arm (0.54 at 30° vs 0.56 at 90°; P = .619 for the matched pairs t test and .274 for the Wilcoxon signed-rank test). However, for the right arm, the flattening ratio at 90° was significantly higher than that at 30° (0.58 at 90° vs 0.50 at 30°; P = .007 for both the matched pairs t test and the Wilcoxon signed-rank test). CONCLUSIONS The mean CSA of the ulnar nerve at the elbow at 30° was not significantly different than at 90°. However, the average flattening ratio at 90° was found to be significantly higher than at 30° for the right arm.
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Sinikumpu JJ, Victorzon S, Lindholm EL, Peljo T, Serlo W. Ulnar nerve morbidity as a long-term complication of pediatric supracondylar humeral fracture. Musculoskelet Surg 2013; 98:127-33. [PMID: 23934605 DOI: 10.1007/s12306-013-0291-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 07/08/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND Supracondylar humeral fractures are common in children. We studied long-term ulnar nerve symptoms secondary to these fractures and analyzed the treatment for ulnar neuropathy. MATERIALS AND METHODS The cohort included 91 patients with a supracondylar humeral fracture in childhood, on average 12 years previously, in the geographic catchment area. All the cases were reexamined in regard to ulnar nerve morbidity. Cases with secondary ulnar neuropathy were treated nonoperatively and operatively. RESULTS Ulnar neuropathy was present in four cases (4.4 %). They all had suffered from a dislocated fracture, and they had been operated primarily. Another three patients had slight ulnar nerve symptoms. Hence, the total prevalence of secondary ulnar nerve morbidity was 7.7 %. A jumping nerve was seen in 9.9 %; 51.6 % had a diminished axial angle. CONCLUSIONS We report a defined pattern of long-term ulnar nerve morbidity after pediatric supracondylar humeral fracture. The prevalence of neuropathy is alarming in the young population (<25 years of age).
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Affiliation(s)
- J-J Sinikumpu
- Department of Children and Adolescents, Division of Pediatric Surgery and Orthopedics, Oulu University Hospital, PL 29, 90029, Oulu, Finland,
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Abstract
Over the last decade, neuromuscular ultrasonography has emerged as a useful tool for the diagnosis of peripheral nerve disorders. This article reviews sonographic findings of normal nerves, including key quantitative ultrasound measurements that are helpful in the evaluation of focal and possibly generalized peripheral neuropathies. It also discusses several recent articles outlining the evidence base for the use of this technology, as well as new findings in compressive, traumatic, and generalized neuropathies. Ultrasonography is well suited for use in electrodiagnostic laboratories, where physicians, experienced in both the clinical evaluation of patients and the application of hands-on technology, can integrate findings from the patient's history, physical examination, electrophysiological studies, and imaging for diagnosis and management.
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Affiliation(s)
- Jung Im Suk
- Department of Neurology, School of Medicine, Catholic University of Daegu, 3056-6, Daemyeong-4-dong, Nam-gu, Daegu, South Korea.
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Won SJ, Kim BJ, Park KS, Yoon JS, Choi H. Reference values for nerve ultrasonography in the upper extremity. Muscle Nerve 2013; 47:864-71. [DOI: 10.1002/mus.23691] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2012] [Indexed: 12/24/2022]
Affiliation(s)
- Sun Jae Won
- Department of Rehabilitation Medicine; Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea; Seoul; South Korea
| | - Byung-Jo Kim
- Department of Neurology; Korea University College of Medicine; Seoul; South Korea
| | - Kyung Seok Park
- Department of Neurology; Seoul National University Bundang Hospital, Seoul National University, College of Medicine; Seoul; South Korea
| | - Joon Shik Yoon
- Department of Rehabilitation Medicine; Korea University College of Medicine; 80 Guro Gu, Guro Dong; Seoul; South Korea
| | - Hyuk Choi
- Department of Medical Sciences; Graduate School of Medicine, Korea University; Seoul; South Korea
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Jung JH, Kim KH, Choi SK, Shim JH. Usefulness of ultrasound for detecting suspected peripheral nerve lesions in diagnosis of peripheral neuropathy : case report and brief review of the literature. J Korean Neurosurg Soc 2013; 53:132-5. [PMID: 23560182 PMCID: PMC3611060 DOI: 10.3340/jkns.2013.53.2.132] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 11/13/2012] [Accepted: 02/04/2013] [Indexed: 11/27/2022] Open
Abstract
Ultrasound scanning of a peripheral nerve along its expected course is a simple and useful method for determining the cause of peripheral neuropathy. We present 3 cases of peripheral neuropathy in which the pathology was detected by simple ultrasound scanning of the affected nerve. There were 2 cases of entrapment neuropathy due to mucoid cyst and 1 case of nerve sheath tumor. All lesions were visualized by simple ultrasound scanning of the involved peripheral nerve. Our results suggest that if a lesion affecting the peripheral nerve is suspected after history and physical examination or electrophysiologic studies, ultrasound scanning of the peripheral nerve of interest throughout its course is very helpful for identifying the causative lesion.
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Affiliation(s)
- Jae-Hyun Jung
- Department of Neurosurgery, Sannae Wooridle Neurosurgical Clinic, Daejeon, Korea
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Landau ME, Campbell WW. Clinical Features and Electrodiagnosis of Ulnar Neuropathies. Phys Med Rehabil Clin N Am 2013. [DOI: 10.1016/j.pmr.2012.08.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Abstract
Peripheral nerve entrapments are frequent. They usually appear in anatomical tunnels such as the carpal tunnel. Nerve compressions may be due to external pressure such as the fibular nerve at the fibular head. Malignant or benign tumors may also damage the nerve. For each nerve from the upper and lower limbs, detailed clinical, electrophysiological, imaging, and therapeutic aspects are described. In the upper limbs, carpal tunnel syndrome and ulnar neuropathy at the elbow are the most frequent manifestations; the radial nerve is less frequently involved. Other nerves may occasionally be damaged and these are described also. In the lower limbs, the fibular nerve is most frequently involved, usually at the fibular head by external compression. Other nerves may also be involved and are therefore described. The clinical and electrophysiological examination are very important for the diagnosis, but imaging is also of great use. Treatments available for each nerve disease are discussed.
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Affiliation(s)
- P Bouche
- Department of Clinical Neurophysiology Salpêtrière Hospital, Paris, France.
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