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Hannaford A, Simon NG. Ulnar neuropathy. HANDBOOK OF CLINICAL NEUROLOGY 2024; 201:103-126. [PMID: 38697734 DOI: 10.1016/b978-0-323-90108-6.00006-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Ulnar neuropathy at the elbow is the second most common compressive neuropathy. Less common, although similarly disabling, are ulnar neuropathies above the elbow, at the forearm, and the wrist, which can present with different combinations of intrinsic hand muscle weakness and sensory loss. Electrodiagnostic studies are moderately sensitive in diagnosing ulnar neuropathy, although their ability to localize the site of nerve injury is often limited. Nerve imaging with ultrasound can provide greater localization of ulnar injury and identification of specific anatomical pathology causing nerve entrapment. Specifically, imaging can now reliably distinguish ulnar nerve entrapment under the humero-ulnar arcade (cubital tunnel) from nerve injury at the retro-epicondylar groove. Both these pathologies have historically been diagnosed as either "ulnar neuropathy at the elbow," which is non-specific, or "cubital tunnel syndrome," which is often erroneous. Natural history studies are few and limited, although many cases of mild-moderate ulnar neuropathy at the elbow appear to remit spontaneously. Conservative management, perineural steroid injections, and surgical release have all been studied in treating ulnar neuropathy at the elbow. Despite this, questions remain about the most appropriate management for many patients, which is reflected in the absence of management guidelines.
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Affiliation(s)
- Andrew Hannaford
- Westmead Clinical School, Westmead Hospital, University of Sydney, Westmead, NSW, Australia
| | - Neil G Simon
- Northern Beaches Clinical School, Macquarie University, Sydney, NSW, Australia.
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2
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Goes PK, Flores DV, Damer A, Huang BK. Shoulder and Elbow Injuries in Adult Overhead Throwers: Imaging Review. Radiographics 2023; 43:e230094. [PMID: 37917538 DOI: 10.1148/rg.230094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Overhead throwing, particularly in baseball, subjects the shoulder and elbow to various unique injuries. Capsular contracture following repetitive external rotation shifts the humeral head posterosuperiorly, predisposing to glenohumeral internal rotation deficit (GIRD), Bennett, posterosuperior internal impingement (PSI), and superior labrum anterior-posterior (SLAP) lesions. GIRD represents loss of internal rotation at the expense of external rotation. Bennett lesion represents ossification of the posteroinferior glenohumeral ligament due to repetitive traction. PSI manifests with humeral head cysts and "kissing" tears of the posterosuperior cuff and labrum. Scapular dysfunction contributes to symptoms of PSI and predisposes to labral or rotator cuff disease. "Peel-back" or SLAP lesions occur when torsional forces detach the biceps-labral anchor from the glenoid. Finally, disorders of the anterior capsule, latissimus dorsi, teres major, and subscapularis are well recognized in overhead throwers. At the elbow, injuries typically involve the medial-sided structures. The ulnar collateral ligament (UCL) is the primary static restraint to valgus stress and can be thickened, attenuated, ossified, and/or partially or completely torn. Medial epicondylitis can occur with tendinosis, partial tear, or complete rupture of the flexor-pronator mass and can accompany UCL tears and ulnar neuropathy. Posteromedial impingement (PMI) and valgus extension overload syndrome are related entities that follow abundant valgus forces during late cocking or acceleration, and deceleration. These valgus stresses wedge the olecranon into the olecranon fossa, leading to PMI, osteophytes, and intra-articular bodies. Other osseous manifestations include olecranon stress fracture and cortical thickening of the humeral shaft. ©RSNA, 2023 Quiz questions for this article are available in the supplemental material.
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Affiliation(s)
- Paola Kuenzer Goes
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Dyan V Flores
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Alameen Damer
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
| | - Brady K Huang
- From the Division of Musculoskeletal Radiology, Laboratorio Delboni Auriemo, DASA Diagnostic Imaging, São Paulo, Brazil (P.K.G.); Department of Radiology, Radiation Oncology and Medical Physics, Faculty of Medicine, University of Ottawa, Ottowa, Ontario, Canada (D.V.F., A.D.); Department of Medical Imaging, The Ottawa Hospital, 501 Smyth Rd, Ottawa, ON, Canada K1H 8L6 (D.V.F.); Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.); and Department of Radiology, Division of Musculoskeletal Imaging and Intervention, University of California San Diego Medical Center, San Diego, Calif (B.K.H.)
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3
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Han D, Xu L, Xu J. Clinical Application of Ultrasound-guided Electrode Placement and Detection of Nerve Action Potential. J Neurol Surg A Cent Eur Neurosurg 2023. [PMID: 35504295 DOI: 10.1055/a-1842-4343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND We explore a minimally invasive method (combined ultrasound detection, electrode placement and electrophysiologic nerve examination) to evaluate the early-stage quality of a nerve suture site. METHODS Ten patients with median and/or ulnar nerve injuries who had undergone nerve suture were recruited. Postoperative ultrasound examination found that the nerve injury was sutured. Then, a stimulating electrode and recording electrode were located beside the nerve proximal and distal to the suture site guided by ultrasound. Measurement of nerve action potentials (NAP) were performed with these electrodes, followed by surgical exploration. The pre- and intraoperative electrophysiologic findings were compared, together with amplitude, latency, and wave shape of NAP. RESULTS Of the 10 patients, 3 patients were diagnosed with median nerve injury, 2 with ulnar nerve injury, and 5 with the median nerve and ulnar nerve injury. NAP could not be detected pre- and intraoperatively in three median nerves from three patients and in two ulnar nerves from two patients. NAP was detected in 10 nerves from the remaining 5 patients. The pre- and intraoperative NAP results showed consistent results concerning the status of the nerve suture. Wilcoxon's signed-rank test indicated no significant difference in the amplitude and latency detected via sonographically placed electrodes and during surgical exploration. The number of negative-phase waves were equally distributed. CONCLUSION Ultrasound-guided electrode placement and NAP detection can substitute surgery and serve as a minimally invasive approach to evaluate the regeneration of a sutured nerve.
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Affiliation(s)
- Dong Han
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
- Key Laboratory of Hand Reconstruction, Ministry of Health, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, People's Republic of China
| | - Le Xu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
- Key Laboratory of Hand Reconstruction, Ministry of Health, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, People's Republic of China
| | - Jianguang Xu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
- Key Laboratory of Hand Reconstruction, Ministry of Health, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, People's Republic of China
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McGurk K, Tracey JA, Daley DN, Daly CA. Diagnostic Considerations in Compressive Neuropathies. JOURNAL OF HAND SURGERY GLOBAL ONLINE 2023; 5:525-535. [PMID: 37521550 PMCID: PMC10382896 DOI: 10.1016/j.jhsg.2022.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 10/14/2022] [Indexed: 12/23/2022] Open
Abstract
Peripheral nerve compression of the upper extremity is a common pathology often necessitating surgical intervention, much is known, but much more is left to understand. For the more common pathologies, carpal tunnel syndrome, cubital tunnel syndrome, and ulnar tunnel syndrome, research and clinical efforts directed toward standardization and reduction of resource use have been attempted with varied success. Diagnosis of many of these syndromes is largely based on a proper history and physical examination. Electrodiagnostic studies continue to have value, but proportionally less than previous decades. In addition, emerging technologies, including magnetic resonance neurography, novel ultrasound evaluation techniques, and ultrasound-guided diagnostic injections, are beginning to demonstrate their ability to add value to the diagnostic algorithm, particularly when less common compressive neuropathies are present and/or the diagnosis is in question.
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Affiliation(s)
- Katherine McGurk
- Department of Orthopedic Surgery, Medical University of South Carolina Charleston, SC
| | - Joseph Anthony Tracey
- Department of Orthopedic Surgery, Medical University of South Carolina Charleston, SC
| | - Dane N. Daley
- Department of Orthopedic Surgery, Medical University of South Carolina Charleston, SC
| | - Charles Andrew Daly
- Department of Orthopedic Surgery, Medical University of South Carolina Charleston, SC
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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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6
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Fisse AL, Pitarokoili K, Schreiber S. Moderner Ultraschall in der Diagnostik Neuromuskulärer
Erkrankungen. KLIN NEUROPHYSIOL 2022. [DOI: 10.1055/a-1740-0649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
ZusammenfassungDer neuromuskuläre Ultraschall hat sich in den letzten Jahren zu einem
festen Bestandteil in der neurologischen Diagnostik entwickelt. Dazu tragen auch
die fortwährende technische Weiterentwicklung der Methode und ihr
unkomplizierter und nebenwirkungsfreier Einsatz direkt am Patienten bei. Im
klinischen Alltag wird der Ultraschall in der Diagnostik und
Differentialdiagnostik sowie in der Verlaufskontrolle traumatischer
Nervenläsionen, sekundärer und dynamischer nervaler
Kompressionssyndrome, hereditärer und akuter sowie chronisch autoimmuner
Polyneuropathien, Motoneuron- und Muskelerkrankungen verwendet. Dabei spielt die
Ultraschalldiagnostik auch zunehmend eine Rolle für
Therapieentscheidungen, v.a. im Hinblick auf die operative Versorgung und den
Einsatz oder die Fortführung immunmodulatorischer Medikamente. In den
nächsten Jahren ist eine weitere interdisziplinäre Verbreitung
und fortwährend zunehmende Standardisierung der Methode zu erwarten.
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Affiliation(s)
- Anna Lena Fisse
- Klinik für Neurologie, Ruhr-Universität Bochum, St.
Josef Hospital, Bochum
| | | | - Stefanie Schreiber
- Universitätsklinik für Neurologie, Otto-von-Guericke
Universität, Magdeburg
- Deutsches Zentrum für Neurodegenerative Erkrankungen,
Magdeburg
- Center for Behavioral Brain Sciences (CBBS), Otto-von-Guericke
Universität, Magdeburg
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Fodor D, Rodriguez-Garcia SC, Cantisani V, Hammer HB, Hartung W, Klauser A, Martinoli C, Terslev L, Alfageme F, Bong D, Bueno A, Collado P, D'Agostino MA, de la Fuente J, Iohom G, Kessler J, Lenghel M, Malattia C, Mandl P, Mendoza-Cembranos D, Micu M, Möller I, Najm A, Özçakar L, Picasso R, Plagou A, Sala-Blanch X, Sconfienza LM, Serban O, Simoni P, Sudoł-Szopińska I, Tesch C, Todorov P, Uson J, Vlad V, Zaottini F, Bilous D, Gutiu R, Pelea M, Marian A, Naredo E. The EFSUMB Guidelines and Recommendations for Musculoskeletal Ultrasound - Part I: Extraarticular Pathologies. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2022; 43:34-57. [PMID: 34479372 DOI: 10.1055/a-1562-1455] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The first part of the guidelines and recommendations for musculoskeletal ultrasound, produced under the auspices of the European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB), provides information about the use of musculoskeletal ultrasound for assessing extraarticular structures (muscles, tendons, entheses, ligaments, bones, bursae, fasciae, nerves, skin, subcutaneous tissues, and nails) and their pathologies. Clinical applications, practical points, limitations, and artifacts are described and discussed for every structure. After an extensive literature review, the recommendations have been developed according to the Oxford Centre for Evidence-based Medicine and GRADE criteria and the consensus level was established through a Delphi process. The document is intended to guide clinical users in their daily practice.
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Affiliation(s)
- Daniela Fodor
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | - Vito Cantisani
- Department of Radiological, Oncological and Anatomo-pathological Sciences, "Sapienza" University, Rome, Italy
| | - Hilde B Hammer
- Department of Rheumatology, Diakonhjemmet Hospital and Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Wolfgang Hartung
- Clinic for Rheumatology and Clinical Immunology, Asklepios Clinic, Bad Abbach, Germany
| | - Andrea Klauser
- Department of Radiology, Medical University Innsbruck, Section Head Rheumatology and Sports Imaging, Innsbruck, Austria
| | - Carlo Martinoli
- Department of Health Science - DISSAL, University of Genova, Italy
- UO Radiologia, IRCCS Policlinico San Martino, Genova, Italy
| | - Lene Terslev
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Fernando Alfageme
- Dermatology Department, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - David Bong
- Instituto Poal de Reumatologia Barcelona, EULAR Working Group Anatomy for the Image, University of Barcelona, International University of Catalunya, Spain
| | - Angel Bueno
- Department of Musculoskeletal Radiology, Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | - Paz Collado
- Rheumatology Department, Transitional Care Clinic, Hospital Universitario Severo Ochoa, Madrid, Spain
| | - Maria Antonietta D'Agostino
- Istituto di Reumatologia Università Cattolica del Sacro Cuore, UOC Reumatologia, Fondazione Policlinico Universitario Agostino Gemelli, IRCCS, Rome, Italy
| | | | - Gabriella Iohom
- Department of Anaesthesiology and Intensive Care Medicine, Cork University Hospital and University College Cork, Cork, Ireland
| | - Jens Kessler
- Department of Anaesthesiology, Division of Pain Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Manuela Lenghel
- Radiology Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Clara Malattia
- UOC Clinica Pediatrica e Reumatologia, IRCCS Istituto Giannina Gaslini, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetic and Maternal Infantile Sciences (DINOGMI) University of Genoa, Genoa, Italy
| | - Peter Mandl
- Division of Rheumatology, Medical University of Vienna, Vienna, Austria
| | | | - Mihaela Micu
- Rheumatology Division, 2nd Rehabilitation Department, Rehabilitation Clinical Hospital Cluj-Napoca, Romania
| | - Ingrid Möller
- Instituto Poal de Reumatologia Barcelona, EULAR Working Group Anatomy for the Image, University of Barcelona, International University of Catalunya, Spain
| | - Aurelie Najm
- Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
| | - Riccardo Picasso
- Department of Health Science - DISSAL, University of Genova, Italy
- UO Radiologia, IRCCS Policlinico San Martino, Genova, Italy
| | - Athena Plagou
- Ultrasound Unit, Private Radiological Institution, Athens, Greece
| | - Xavier Sala-Blanch
- Department of Anaesthesiology, Hospital Clinic, Department of Human Anatomy, Faculty of Medicine, University of Barcelona, Spain
| | - Luca Maria Sconfienza
- IRCCS Istituto Ortopedico Galeazzi, Milano Italy
- Department of Biomedical Sciences for Health, University of Milano, Milano, Italy
| | - Oana Serban
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Paolo Simoni
- Paediatric Imaging Department, "Reine Fabiola" Children's University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Iwona Sudoł-Szopińska
- Department of Radiology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | | | - Plamen Todorov
- Department of Internal Disease Propaedeutic and Clinical Rheumatology, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Jacqueline Uson
- Department of Rheumatology Hospital Universitario Móstoles, Universidad Rey Juan Carlos, Madrid, Spain
| | - Violeta Vlad
- Sf. Maria Hospital, Rheumatology Department, Bucharest, Romania
| | - Federico Zaottini
- Department of Health Science - DISSAL, University of Genova, Italy
- UO Radiologia, IRCCS Policlinico San Martino, Genova, Italy
| | - Diana Bilous
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Roxana Gutiu
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Michael Pelea
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Anamaria Marian
- 2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Esperanza Naredo
- Department of Rheumatology, Bone and Joint Research Unit, Hospital Universitario Fundación Jiménez Díaz, IIS Fundación Jiménez Díaz, and Universidad Autónoma de Madrid, Madrid, Spain
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Reddy YM, K. Murthy J, Suresh L, Jaiswal S, Pidaparthi L, S. Kiran ES. Diagnosis and severity evaluation of ulnar neuropathy at the elbow by ultrasonography: A case-control study. J Med Ultrasound 2022; 30:189-195. [DOI: 10.4103/jmu.jmu_152_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/31/2021] [Accepted: 08/09/2021] [Indexed: 11/04/2022] Open
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Shook SJ, Ginsberg M, Narayanaswami P, Beekman R, Dubin AH, Katirji B, Swaminathan B, Werner RA, Cartwright MS. Evidence-based guideline: Neuromuscular ultrasound for the diagnosis of ulnar neuropathy at the elbow. Muscle Nerve 2021; 65:147-153. [PMID: 34921428 DOI: 10.1002/mus.27460] [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: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 11/08/2022]
Abstract
INTRODUCTION/AIMS The purpose of this literature review is to develop an evidence-based guideline for the use of neuromuscular ultrasound in the diagnosis of ulnar neuropathy at the elbow (UNE). The proposed research question was: "In patients with suspected UNE, does ulnar nerve enlargement as measured with ultrasound accurately identify those patients with UNE?" METHODS A systematic review and meta-analysis was performed, and studies were classified according to American Academy of Neurology criteria for rating articles for diagnostic accuracy. RESULTS Based on Class I evidence in four studies, it is probable that neuromuscular ultrasound measurement of the ulnar nerve at the elbow, either of diameter or cross-sectional area (CSA), is accurate for the diagnosis of UNE. RECOMMENDATION For patients with symptoms and signs suggestive of ulnar neuropathy, clinicians should offer ultrasonographic measurement of ulnar nerve cross-sectional area or diameter to confirm the diagnosis and localize the site of compression (Level B).
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Affiliation(s)
- Steven J Shook
- American Association of Neuromuscular & Electrodiagnostic Medicine, Rochester, Minnesota, USA.,Department of Neurology, Neuromuscular Center, Cleveland Clinic, Cleveland, Ohio, USA
| | - Matthew Ginsberg
- Department of Neurology, Akron Children's Hospital, Akron, Ohio, USA
| | - Pushpa Narayanaswami
- Department of Neurology, Neuromuscular Division, Beth Israel Deaconess Medical Center, Boston, Ohio, USA
| | - Roy Beekman
- Department of Neurology, Zuyderland Medisch Centrum, Sittard-Geleen, The Netherlands
| | - Andrew H Dubin
- Department of Physical Medicine & Rehabilitation, University of Florida, Gainesville, Florida, USA
| | - Bashar Katirji
- Neurological Institute, University Hospitals, Cleveland Medical Center, Case Western Reserve University, Cleveland, Ohio, USA
| | - Bharathi Swaminathan
- Department of Physical Medicine and Rehabilitation, Chicago Medical School, North Chicago, Illinois, USA
| | - Robert A Werner
- Michigan Medicine, Ann Arbor VA Health System, Ann Arbor, Michigan, USA
| | - Michael S Cartwright
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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10
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Hannaford A, Vucic S, Kiernan MC, Simon NG. Review Article "Spotlight on Ultrasonography in the Diagnosis of Peripheral Nerve Disease: The Evidence to Date". Int J Gen Med 2021; 14:4579-4604. [PMID: 34429642 PMCID: PMC8378935 DOI: 10.2147/ijgm.s295851] [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] [Received: 06/22/2021] [Accepted: 07/27/2021] [Indexed: 11/23/2022] Open
Abstract
Neuromuscular ultrasound is rapidly becoming incorporated into clinical practice as a standard tool in the assessment of peripheral nerve diseases. Ultrasound complements clinical phenotyping and electrodiagnostic evaluation, providing critical structural anatomical information to enhance diagnosis and identify structural pathology. This review article examines the evidence supporting neuromuscular ultrasound in the diagnosis of compressive mononeuropathies, traumatic nerve injury, generalised peripheral neuropathy and motor neuron disease. Extending the sonographic evaluation of nerves beyond simple morphological measurements has the potential to improve diagnostics in peripheral neuropathy, as well as advancing the understanding of pathological mechanisms, which in turn will promote precise therapies and improve therapeutic outcomes.
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Affiliation(s)
- Andrew Hannaford
- Westmead Clinical School, Westmead Hospital, University of Sydney, Sydney, Australia
| | - Steve Vucic
- Westmead Clinical School, Westmead Hospital, University of Sydney, Sydney, Australia
| | - Matthew C Kiernan
- Brain and Mind Centre, University of Sydney, University of Sydney and Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia
| | - Neil G Simon
- Northern Beaches Clinical School, Macquarie University, Sydney, Australia
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11
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Pelosi L, Arányi Z, Beekman R, Bland J, Coraci D, Hobson-Webb LD, Padua L, Podnar S, Simon N, van Alfen N, Verhamme C, Visser L, Walker FO, Yoon JS, Cartwright MS. Expert consensus on the combined investigation of ulnar neuropathy at the elbow using electrodiagnostic tests and nerve ultrasound. Clin Neurophysiol 2021; 132:2274-2281. [PMID: 34229959 DOI: 10.1016/j.clinph.2021.04.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/16/2021] [Accepted: 04/30/2021] [Indexed: 12/20/2022]
Abstract
The addition of ultrasound (US) to electrodiagnostic (EDX) tests can significantly enhance the accuracy of testing for ulnar neuropathy at the elbow (UNE). We aimed to obtain expert consensus to guide clinicians on the combined use of EDX and US in UNE investigation. Consensus was achieved using the Delphi method. Two consecutive anonymised questionnaires were submitted to 15 experts, who were asked to choose their level of agreement with each statement. Consensus was pre-defined as ≥ 80% rating agreement. The experts concluded that all investigations of UNE should include both nerve conduction studies and US. There was consensus that US should include cross-sectional area measurement and assessment of nerve mobility at the elbow, and that the entire ulnar nerve should be imaged. This study defined expert opinion on the 'core' techniques that should be used routinely in the UNE investigation using EDX and US. Areas with lack of consensus highlighted some controversial issues in the current use of these diagnostic modalities and the need for future research. This document is an initial step to guide clinicians on the combined investigation of UNE using EDX and US, to be regularly updated as new research emerges.
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Affiliation(s)
- Luciana Pelosi
- Departments of Neurology and Neurophysiology, Bay Of Plenty District Health Board, Tauranga Hospital, Tauranga, New Zealand.
| | - Zsuzsanna Arányi
- Department of Neurology, Semmelweis University, Budapest, Hungary
| | - Roy Beekman
- Zuyderland Medical Centre, Departement of Neurology, Heerlen, the Netherlands
| | - Jeremy Bland
- Department of Neurophysiology, East Kent Hospitals University NHS Trust, UK
| | - Daniele Coraci
- IRCCS Fondazione Policlinico Universitario A. Gemelli, Rome, Italy
| | - Lisa D Hobson-Webb
- Duke University, Department of Neurology/Neuromuscular Division, Durham, NC, USA
| | - Luca Padua
- IRCCS Fondazione Policlinico Universitario A. Gemelli, Rome, Italy; Department of Geriatrics, Neuroscience and Orthopedics, Catholic University of the Sacred Heart, Rome, Italy
| | - Simon Podnar
- Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
| | - Neil Simon
- Northern Clinical School, the University of Sydney, NSW, Australia
| | - Nens van Alfen
- Department of Neurology and Clinical Neurophysiology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Camiel Verhamme
- Department of Neurology and Clinical Neurophysiology, Amsterdam Neuroscience, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Leo Visser
- Department of Neurology and Clinical Neurophysiology, Elisabeth-Tweesteden Hospital, Tilburg, the Netherlands
| | - Francis O Walker
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Joon Shik Yoon
- Department of Rehabilitation Medicine, Korea University Hospital at Guro, Korea University Medical College, Seoul, Republic of Korea
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Comparison of electrodiagnosis, neurosonography and MR neurography in localization of ulnar neuropathy at the elbow. J Neuroradiol 2021; 49:9-16. [PMID: 34023361 DOI: 10.1016/j.neurad.2021.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 03/28/2021] [Accepted: 05/04/2021] [Indexed: 11/23/2022]
Abstract
INTRODUCTION In patients with ulnar neuropathy at the elbow (UNE) the precise determination of the site of lesion is important for subsequent differential diagnostic considerations and therapeutic management. Due to a paucity of comparable data, to better define the role of different diagnostic tests, we performed the first prospective study comparing the diagnostic accuracy of short segment nerve stimulation, nerve ultrasonography, MR neurography (MRN), and diffusion tensor imaging (DTI) in patients with UNE. METHODS UNE was clinically diagnosed in 17 patients with 18 affected elbows. For all 18 affected elbows in patients and 20 elbows in 10 healthy volunteers, measurements of all different diagnostic tests were performed at six anatomical positions across the elbow with measuring points from distal (D4) to proximal (P6) in relation to the medial epicondyle (P0). Additional qualitative assessment regarding structural changes of surrounding nerve anatomy was conducted. RESULTS The difference between affected arms of patients and healthy control arms were most frequently the largest at measure intervals D2 to P0 and P0 to P2 for electrophysiological testing, or measure points P0 and P2 for all other devices, respectively. At both levels P0 and at P2, T2 contrast-to-noise ratio (CNR) of MRN and mean diffusivity (MD) of DTI-based MRN showed best accuracies. DISCUSSION This study revealed differences in diagnostic performance of tests concerning a specific location of UNE, with better results for T2 contrast to noise ratio (CNR) in MRN and mean diffusivity of DTI-based MRN. Additional testing with MRN and nerve ultrasonography is recommended to uncover anatomical changes.
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Mamarabadi M, Morren JA, Shook SJ. Enhancing diagnostic accuracy using a side-to-side cross-sectional area ratio for the diagnosis of unilateral ulnar mononeuropathy at the elbow. Muscle Nerve 2021; 63:690-696. [PMID: 33543772 DOI: 10.1002/mus.27178] [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: 05/05/2020] [Revised: 01/13/2021] [Accepted: 01/16/2021] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Neuromuscular ultrasonography (NMUS) is a valuable adjunct to electrodiagnostic testing for the diagnosis of entrapment neuropathy. The aim of this study was to determine whether diagnostic accuracy of NMUS could be enhanced in patients with unilateral ulnar mononeuropathy at the elbow (UNE) by utilizing side-to-side ulnar nerve cross-sectional area (CSA) ratios. METHODS Retrospective case-control analysis of unilateral UNE cases identified cutoff values for elbow segment ulnar nerve maximum CSA (MCSA) of the symptomatic/asymptomatic limb (M ratio), as well as side-to-side ratios comparing MCSA with ipsilateral CSA at the Guyon canal (E/G), middle forearm (E/F), and middle humerus (E/H). Diagnostic accuracy values were calculated. RESULTS The optimal M-ratio cut-off was 1.22 (sensitivity, 92.9%; specificity, 97.8%; accuracy, 95.4%). Optimal cutoffs for inter-E/G, -E/F, and -E/H ratios were 1.07 (sensitivity, 98%; specificity, 78%; accuracy, 87.7%), 1.11 (sensitivity, 95%; specificity, 80%; accuracy, 87.2%), and 1.18 (sensitivity, 95%; specificity, 93%; accuracy, 94%), respectively. DISCUSSION The M ratio and inter-E/H ratio exhibited high diagnostic accuracy for unilateral UNE. Prospective studies are needed to compare the accuracy of the new measures with a single MCSA measurement.
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Affiliation(s)
- Mansoureh Mamarabadi
- Department of Neurology, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - John A Morren
- Neuromuscular Center, Neurological Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Steven J Shook
- Neuromuscular Center, Neurological Institute, Cleveland Clinic Foundation, Cleveland, Ohio
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Ultrasound Ulnar Nerve Measurement in a Healthy Population. Rheumatol Ther 2021; 8:457-466. [PMID: 33543416 PMCID: PMC7991055 DOI: 10.1007/s40744-021-00283-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/20/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction Ulnar tunnel syndrome at the elbow is a common pathology. The ultrasound cross-sectional area is a well-known metric widely accepted in radiology for the description of nerve entrapment. However, the pathological cut-off value remains challenging. The objectives of this study were to (1) describe the ultrasound cross-sectional area measurement of the ulnar nerve at three locations, and (2) to evaluate the inter-observer reliability by two independent ultrasonographers. Methods One-hundred ulnar nerves of 50 asymptomatic individuals were scanned using B-mode and power Doppler ultrasonography. The ultrasound cross-sectional area measurements of the ulnar nerve were performed at three different levels: 2 cm proximal to the epicondyle, at the level of the epicondyle, and 2 cm distal to the epicondyle. Results In our healthy population, we found 21, 24 and 7% of ultrasound cross-sectional area ulnar nerve > 8 mm2, respectively, at three different levels of measurement and 4, 7, and 0% US-CSA ulnar nerve > 10 mm2. The intraclass correlation coefficient measured at three different site levels were good (0.7943, 0.7509) to moderate (0.5701). Conclusions Almost one-quarter of our healthy population had an ultrasound cross-sectional area ulnar nerve more than 8 mm2 and few more than 10 mm2. A cut-off of ultrasound cross-sectional area ulnar nerve measurement more than 10 mm2 could be considered as pathological. No abnormal elbow ulnar nerve vascularization has been seen. This is the first step towards normal B-mode ulnar nerve values at the elbow to further detect pathological US findings as ulnar nerve entrapment.
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Optimal Choice of Ultrasound-Based Measurements for the Diagnosis of Ulnar Neuropathy at the Elbow: A Meta-Analysis of 1961 Examinations. AJR Am J Roentgenol 2020; 215:1171-1183. [PMID: 32960671 DOI: 10.2214/ajr.19.22457] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE. The purpose of this study was to determine the optimal ultrasound (US) measurement technique and cutoff value for the diagnosis of ulnar neuropathy at the elbow. MATERIALS AND METHODS. A systematic literature search was conducted of the PubMed, Embase, Scopus, and Web of Science databases for studies evaluating the diagnostic accuracy of US of patients with ulnar neuropathy at the elbow before April 2019. Random-effects modeling was performed to compare the sensitivity, specificity, and diagnostic odds ratio (DOR) of different US measurements, including diameter and cross-sectional area (CSA) of the nerve at the medial epicondyle or proximal and distal levels, maximal diameter, maximal CSA, and nerve ratios. Sensitivity and metaregression analyses were performed to assess the impact of clinical and imaging-based variables on the DOR of US. RESULTS. Among 820 retrieved studies, 19 studies (1961 examinations) were included. Measuring the CSA of the ulnar nerve at the medial epicondyle with a cutoff value greater than 10-10.5 mm2 had higher sensitivity (80.4%, 95% CI, 75.4-84.7%) than other techniques. Nerve ratios had higher specificity (89.1%, 95% CI, 85.8-91.8%) than other measurements; however, the definition of ratios and cutoff values varied across studies. ROC analysis showed higher diagnostic performance for measuring CSA at the medial epicondyle (AUC, 0.931). The mean CSA value was a significant predictor of the DOR of US (β coefficient, 0.307 ± 0.074; p < 0.001). Every 1-mm2 larger CSA was associated with a 36% increase in DOR. The diagnostic performance of US was the same in any degree of elbow flexion. CONCLUSION. Measuring CSA of the ulnar nerve at the medial epicondyle has sensitivity and diagnostic performance superior to those of other techniques for the diagnosis of ulnar neuropathy at the elbow.
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16
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Schreiber S, Vielhaber S, Schelle T. [Peripheral Nerve Imaging - from a Neurological Perspective for Surgeons]. Zentralbl Chir 2020; 145:541-548. [PMID: 32615625 DOI: 10.1055/a-1189-3627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Nerve ultrasound is a fairly new non-invasive method to visualise peripheral nerves and to detect peripheral nerve lesions. This technique can depict nerve compression syndromes and their aetiologies as well as fascicular torsions. It is also suitable for sonographically guided nerve interventions and for intraoperative navigation. The main advantage of nerve ultrasound is its capability for early diagnosis of severe traumatic nerve lesions that require immediate surgery. Neurologists further use this method to aid the diagnosis of different kinds of polyneuropathies. Within this review we introduce nerve ultrasound to surgeons from a neurological perspective. We focus on different peripheral nerve disorders that might need surgical interventions. Nerve ultrasound will lay the grounds to bring together different expertise in medicine and thus to establish interdisciplinary excellence centres for the understanding, diagnosis and treatment of diseases of the peripheral nervous system.
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Affiliation(s)
- Stefanie Schreiber
- Universitätsklinik für Neurologie, Otto-von-Guericke-Universität Magdeburg, Deutschland.,Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg, Deutschland.,Center for Behavioral Brain Sciences, Otto-von-Guericke-Universität Magdeburg, Deutschland
| | - Stefan Vielhaber
- Universitätsklinik für Neurologie, Otto-von-Guericke-Universität Magdeburg, Deutschland.,Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg, Deutschland.,Center for Behavioral Brain Sciences, Otto-von-Guericke-Universität Magdeburg, Deutschland
| | - Thomas Schelle
- Klinik für Neurologie, Städtisches Klinikum Dessau, Deutschland
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Ultrasound Parameters Other Than the Direct Measurement of Ulnar Nerve Size for Diagnosing Cubital Tunnel Syndrome: A Systemic Review and Meta-analysis. Arch Phys Med Rehabil 2019; 100:1114-1130. [DOI: 10.1016/j.apmr.2018.06.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/14/2018] [Accepted: 06/18/2018] [Indexed: 12/12/2022]
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18
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Bastawy EM, Gad Allah NA, El Nasser OA, Tawfik EA. Neuromuscular ultrasound in ulnar neuropathy at the elbow: correlation with electrodiagnostic studies. EGYPTIAN RHEUMATOLOGY AND REHABILITATION 2019. [DOI: 10.4103/err.err_21_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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DeGeorge BR, Kakar S. Decision-Making Factors for Ulnar Nerve Transposition in Cubital Tunnel Surgery. J Wrist Surg 2019; 8:168-174. [PMID: 30941260 PMCID: PMC6443386 DOI: 10.1055/s-0038-1665548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 05/21/2018] [Indexed: 12/11/2022]
Abstract
Background We designed a survey to ascertain the current perspectives of hand surgeons on the evaluation and management of ulnar nerve instability at the elbow. The secondary aim was to assess the concordance of hand surgeons on definitions of the terms "subluxated" and "dislocated" for classification of ulnar nerve instability. Methods A questionnaire, including demographic practice variables, cubital tunnel practice patterns, preoperative imaging and electrodiagnostic evaluation, and a series of standardized intraoperative photographs of ulnar nerve instability at the elbow were developed and distributed to the current American Society for Surgery of the Hand (ASSH) membership. Results A total of 690 (26.8%) members completed the survey; 84.2% of respondents indicated that they evaluate for ulnar nerve instability preoperatively with clinical examination, whereas only 6.1% indicated they routinely obtained dynamic ultrasound. Respondents indicated that the factors most strongly influencing their decision to proceed with anterior transposition of the ulnar nerve were subluxation on physical examination (89.6%), history consistent with ulnar nerve subluxation (85.8%), and muscle atrophy (43.2%). On review of clinical photographs, respondents demonstrated varying degrees of agreement on the terms "subluxated" or "dislocated" and recommendations for ulnar nerve transposition at intermediate degrees of ulnar nerve instability. Conclusion ASSH members routinely evaluate for ulnar nerve instability with history and clinical examination without uniform use of preoperative ultrasound, and nearly half of the time the decision to transpose the ulnar nerve is made intraoperatively. Definitions for the degree of ulnar nerve instability at the elbow are not uniformly agreed upon, and further development of a classification system may be warranted to standardize treatment.
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Affiliation(s)
| | - Sanjeev Kakar
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
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20
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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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21
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Wu WT, Chang KV, Mezian K, Naňka O, Lin CP, Özçakar L. Basis of Shoulder Nerve Entrapment Syndrome: An Ultrasonographic Study Exploring Factors Influencing Cross-Sectional Area of the Suprascapular Nerve. Front Neurol 2018; 9:902. [PMID: 30405524 PMCID: PMC6205983 DOI: 10.3389/fneur.2018.00902] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/05/2018] [Indexed: 02/06/2023] Open
Abstract
As changes in nerves' shape and size are common ultrasonographic findings of entrapment neuropathy, measurement of the nerve cross-sectional area (CSA) becomes the mostly used indicator to differentiate normality from pathology. Recently, more US research has been conducted to measure the shape of the suprascapular notch and the diameter of the suprascapular nerve. Because the suprascapular nerve is paramount for various shoulder disorders, the present study aims to establish normal values of suprascapular nerve sizes at different levels as well as to investigate potential influence of participants' characteristics on the CSA measurements. The present study used a cross-sectional design investigating the CSA values of the suprascapular nerve from the supraclavicular region to spinoglenoid notch. We employed the inside-epineurium and outside-epineurium methods to quantify CSA of cervical roots (C5 and C6) and the suprascapular nerve on US imaging. Univariate comparisons of nerve sizes among different age and gender groups were carried out. Multivariate analysis was performed to analyze the impact of participants' characteristics on nerve CSA. Repeated measurement analysis of variance was conducted to examine segmental variations of CSA of the suprascapular nerve from its origin to infraspinatus fossa. Our study included 60 healthy adults with 120 shoulders and had three major findings: (1) the inside-epineurium method was more reliable than the outside-epineurium approach for CSA measurements due to higher intra- and inter-rater reliability, (2) women had smaller sizes for cervical nerve roots and for the most proximal segment of the suprascapular nerves, and (3) using the outside-epineurium method, the suprascapular nerve CSA was larger in its distal division than the portion proximal to the mid-clavicular line. In conclusion, the inside-epineurium method has better reliability for nerve CSA assessment but the outside-epineurium method is needed for quantifying the size of distal suprascapular nerve. Gender difference in CSA values should be considered during evaluation of the most proximal nerve segment. Using the outside-epineurium method, the distal suprascapular nerve would be estimated larger than its proximal portion and the segmental discrepancy should be not misinterpreted as pathology.
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Affiliation(s)
- Wei-Ting Wu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ke-Vin Chang
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kamal Mezian
- Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University in Prague, Prague, Czechia
| | - Ondřej Naňka
- First Faculty of Medicine, Institute of Anatomy, Charles University in Prague, Prague, Czechia
| | - Chih-Peng Lin
- Department of Anesthesiology, National Taiwan University Hospital, Taipei, Taiwan and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
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22
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Cho CH, Lee YH, Song KS, Lee KJ, Lee SW, Lee SM. Accuracy of Preoperative Ultrasonography for Cubital Tunnel Syndrome: A Comparison with Intraoperative Findings. Clin Orthop Surg 2018; 10:352-357. [PMID: 30174812 PMCID: PMC6107820 DOI: 10.4055/cios.2018.10.3.352] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/06/2018] [Indexed: 11/14/2022] Open
Abstract
Background The aim of this study was to assess the consistency between preoperative ultrasonographic and intraoperative measurements of the ulnar nerve in patients with cubital tunnel syndrome. Methods Twenty-six cases who underwent anterior transposition of the ulnar nerve for cubital tunnel syndrome were enrolled prospectively. On preoperative ultrasonography, largest cross-sectional diameters of the ulnar nerve were measured at the level of medial epicondyle (ME) and 3 cm proximal (PME) and distal (DME) to the ME on the transverse scan by a single experienced radiologist. Intraoperative direct measurements of the largest diameter at the same locations were performed by a single surgeon without knowledge of the preoperative values. The consistency between ultrasonographic and intraoperative values including the largest diameter and swelling ratio were assessed. Results Significant differences between ultrasonographic and intraoperative values of the largest diameter were found at all levels. The mean difference was 1.29 mm for PME, 1.38 mm for ME, and 1.12 mm for DME. The mean ME-PME swelling ratio for ultrasonographic and intraoperative measurements was 1.50 and 1.39, respectively, showing significant difference. The mean ME-DME swelling ratio for ultrasonographic and intraoperative measurements was 1.53 and 1.43, respectively, showing no significant difference. Conclusions Ultrasonographically measured largest diameters of the ulnar nerve at any levels were smaller than the real values determined intraoperatively. The ME-DME swelling ratio of the ulnar nerve measured by ultrasonography was consistent with the intraoperative measurement.
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Affiliation(s)
- Chul-Hyun Cho
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Yong-Ho Lee
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Kwang-Soon Song
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Kyung-Jae Lee
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Si-Wook Lee
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Sung-Moon Lee
- Department of Orthopedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
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Terayama Y, Uchiyama S, Ueda K, Iwakura N, Ikegami S, Kato Y, Kato H. Optimal Measurement Level and Ulnar Nerve Cross-Sectional Area Cutoff Threshold for Identifying Ulnar Neuropathy at the Elbow by MRI and Ultrasonography. J Hand Surg Am 2018; 43:529-536. [PMID: 29622409 DOI: 10.1016/j.jhsa.2018.02.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 01/09/2018] [Accepted: 02/14/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE Imaging criteria for diagnosing compressive ulnar neuropathy at the elbow (UNE) have recently been established as the maximum ulnar nerve cross-sectional area (UNCSA) upon magnetic resonance imaging (MRI) and/or ultrasonography (US). However, the levels of maximum UNCSA and diagnostic cutoff values have not yet been established. We therefore analyzed UNCSA by MRI and US in patients with UNE and in controls. METHODS We measured UNCSA at 7 levels in 30 patients with UNE and 28 controls by MRI and at 15 levels in 12 patients with UNE and 24 controls by US. We compared UNCSA as determined by MRI or US and determined optimal diagnostic cutoff values based on receiver operating characteristic curve analysis. RESULTS The UNCSA was significantly larger in the UNE group than in controls at 3, 2, 1, and 0 cm proximal and 1, 2, and 3 cm distal to the medial epicondyle for both modalities. The UNCSA was maximal at 1 cm proximal to the medial epicondyle for MRI (16.1 ± 3.5 mm2) as well as for US (17 ± 7 mm2). A cutoff value of 11.0 mm2 for MRI and US was found to be optimal for differentiating between patients with UNE and controls, with an area under the receiver operating characteristic curve of 0.95 for MRI and 0.96 for US. The UNCSA measured by MRI was not significantly different from that by US. Intra-rater and interrater reliabilities for UNCSA were all greater than 0.77. The UNCSA in the severe nerve dysfunction group of 18 patients was significantly larger than that in the mild nerve dysfunction group of 12 patients. CONCLUSIONS By measuring UNCSA with MRI or US at 1 cm proximal to the ME, patients with and without UNE could be discriminated at a cutoff threshold of 11.0 mm2 with high sensitivity, specificity, and reliability. TYPE OF STUDY/LEVEL OF EVIDENCE Diagnostic III.
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Affiliation(s)
- Yasushi Terayama
- Department of Orthopedic Surgery, Tokyo Women's Medical University Hospital, Tokyo, Japan.
| | - Shigeharu Uchiyama
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kazuhiko Ueda
- Department of Diagnostic Radiology, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Nahoko Iwakura
- Department of Orthopedic Surgery, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Shota Ikegami
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoshiharu Kato
- Department of Orthopaedic Surgery, Kitashinagawa Third Hospital, Tokyo, Japan
| | - Hiroyuki Kato
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Chang KV, Wu WT, Han DS, Özçakar L. Ulnar Nerve Cross-Sectional Area for the Diagnosis of Cubital Tunnel Syndrome: A Meta-Analysis of Ultrasonographic Measurements. Arch Phys Med Rehabil 2017; 99:743-757. [PMID: 28888384 DOI: 10.1016/j.apmr.2017.08.467] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 08/02/2017] [Accepted: 08/02/2017] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To examine the performance of sonographic cross-sectional area (CSA) measurements in the diagnosis of cubital tunnel syndrome (CuTS). DATA SOURCES Electronic databases, comprising PubMed and EMBASE, were searched for the pertinent literature before July 1, 2017. STUDY SELECTION Fourteen trials comparing the ulnar nerve CSA measurements between participants with and without CuTS were included. DATA EXTRACTION Study design, participants' demographic characteristics, diagnostic reference of CuTS, and methods of CSA measurement. DATA SYNTHESIS Among different elbow levels, the between-group difference in CSA was the largest at the medial epicondyle (6.0mm2; 95% confidence interval [CI], 4.5-7.4mm2). The pooled mean CSA in participants without CuTS was 5.5mm2 (95% CI, 4.4-6.6mm2) at the arm level, 7.4mm2 (95% CI, 6.7-8.1mm2) at the cubital tunnel inlet, 6.6mm2 (95% CI, 5.9-7.2mm2) at the medial epicondyle, 7.3mm2 (95% CI, 5.6-9.0mm2) at the cubital tunnel outlet, and 5.5mm2 (95% CI, 4.7-6.3mm2) at the forearm level. The sensitivities, specificities, and diagnostic odds ratios pooled from 5 studies, using 10mm2 as the cutoff point, were .85 (95% CI, .78-.90), .91 (95% CI, .86-.94), and 53.96 (95% CI, 14.84-196.14), respectively. CONCLUSIONS The ulnar nerve CSA measured by ultrasound imaging is useful for the diagnosis of CuTS and is most significantly different between patients and participants without CuTS at the medial epicondyle. Because the ulnar nerve CSA in healthy participants, at various locations, rarely exceeds 10mm2, this value can be considered as a cutoff point for diagnosing ulnar nerve entrapment at the elbow region.
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Affiliation(s)
- Ke-Vin Chang
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan; Department of Physical and Rehabilitation Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.
| | - Wei-Ting Wu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan
| | - Der-Sheng Han
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan; Department of Physical and Rehabilitation Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
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Moon HI, Kwon HK, Lee A, Lee SK, Pyun SB. Sonography of Carpal Tunnel Syndrome According to Pathophysiologic Type: Conduction Block Versus Axonal Degeneration. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2017; 36:993-998. [PMID: 28258652 DOI: 10.7863/ultra.16.05019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/02/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES The purpose of this study was to investigate sonographic findings according to the pathophysiologic type in patients with carpal tunnel syndrome. METHODS We retrospectively reviewed the records of 80 patients (148 hands) with carpal tunnel syndrome. Patients were classified into 3 groups according to electrophysiologic findings: (1) conduction block and conduction delay; (2) axonal degeneration; and (3) mixed. We used sonographic evaluations to assess the cross-sectional area at the distal wrist crease and the distal forearm and the wrist-to-forearm ratio of the median nerve. RESULTS Patients with axonal degeneration had significantly larger cross-sectional areas and wrist-to-forearm ratios than those with a conduction block (P < .05). The increased wrist-to-forearm ratio correlated with a reduced amplitude of the sensory nerve action potential, which reflects the degree of axonal degeneration. CONCLUSIONS The cross-sectional area and wrist-to-forearm ratio were associated with the pathophysiologic type of carpal tunnel syndrome, with larger nerve swellings seen in patients with axonal degeneration compared with those with demyelinating lesions. In addition to helping in the localization of the nerve lesion, sonography may indicate the type of nerve lesion.
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Affiliation(s)
- Hyun Im Moon
- Department of Rehabilitation Medicine, Bundang Jesaeng General Hospital, Bundang-gu, Korea
| | - Hee Kyu Kwon
- Department of Physical Medicine and Rehabilitation, Korea University College of Medicine, Seoul, Korea
| | - Ahry Lee
- Department of Physical Medicine and Rehabilitation, Korea University College of Medicine, Seoul, Korea
| | - Se Kwang Lee
- Department of Physical Medicine and Rehabilitation, Korea University College of Medicine, Seoul, Korea
| | - Sung-Bom Pyun
- Department of Physical Medicine and Rehabilitation, Korea University College of Medicine, Seoul, Korea
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The modified ultrasound pattern sum score mUPSS as additional diagnostic tool for genetically distinct hereditary neuropathies. J Neurol 2015; 263:221-230. [PMID: 26559821 DOI: 10.1007/s00415-015-7953-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 12/17/2022]
Abstract
The objective of this study is to evaluate the nerve ultrasound characteristics in genetically distinct inherited neuropathies, the value of the modified ultrasound pattern sum score (mUPSS) to differentiate between the subtypes and the correlation of ultrasound with nerve conduction studies (NCS), disease duration and severity. All patients underwent a standardized neurological examination, ultrasound, and NCS. In addition, genetic testing was performed. Consequently, mUPSS was applied, which is a sum-score of cross-sectional areas (CSA) at predefined anatomical points in different nerves. 31 patients were included (10xCharcot-Marie-Tooth (CMT)1a, 3xCMT1b, 3xCMTX, 9xCMT2, 6xHNPP [Hereditary neuropathy with liability to pressure palsies]). Generalized, homogeneous nerve enlargement and significantly increased UPS scores emphasized the diagnosis of demyelinating neuropathy, particularly CMT1a and CMT1b. The amount of enlargement did not depend on disease duration, symptom severity, height and weight. In CMTX the nerves were enlarged, as well, however, only in the roots and lower limbs, most prominent in men. In CMT2 no significant enlargement was detectable. In HNPP the CSA values were increased at entrapped sites, and not elsewhere. However, a distinction from CMT1, which also showed enlarged CSA values at entrapment sites, was only possible by calculating the entrapment ratios and entrapment score. The mUPSS allowed distinction between CMT1a (increased UPS scores, entrapment ratios <1.0) and HNPP (low UPS scores, entrapment ratios >1.4), while CMT1b and CMTX showed intermediate UPS types and entrapment ratios <1.0. Although based on few cases, ultrasound revealed consistent and homogeneous nerve alteration in certain inherited neuropathies. The modified UPSS is a quantitative tool, which may provide useful information for diagnosis, differentiation and follow-up evaluation in addition to NCS and molecular testing.
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Deniel A, Causeret A, Moser T, Rolland Y, Dréano T, Guillin R. Entrapment and traumatic neuropathies of the elbow and hand: An imaging approach. Diagn Interv Imaging 2015; 96:1261-78. [PMID: 26573067 DOI: 10.1016/j.diii.2015.10.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/15/2015] [Indexed: 12/14/2022]
Abstract
Ultrasound and magnetic resonance imaging currently offer a detailed analysis of the peripheral nerves. Compressive and traumatic nerve injuries are the two main indications for imaging investigation of nerves with several publications describing the indications, technique and diagnostic capabilities of imaging signs. Investigation of entrapment neuropathies has three main goals, which are to confirm neuronal distress, search for the cause of nerve compression and exclude a differential diagnosis on the entire nerve. For traumatic nerve injuries, imaging, predominantly ultrasound, occasionally provides essential information for management including the type of nerve lesion, its exact site and local extension.
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Affiliation(s)
- A Deniel
- Department of Medical Imaging, Rennes University Hospitals, Sud Hospital, 16, boulevard de Bulgarie, 35203 Rennes cedex 2, France.
| | - A Causeret
- Department of Medical Imaging, Rennes University Hospitals, Sud Hospital, 16, boulevard de Bulgarie, 35203 Rennes cedex 2, France
| | - T Moser
- Department of Radiology, Montreal University Hospital Centre, 1560, rue Sherbrooke-Est, Montreal, Quebec H2 4M1, Canada
| | - Y Rolland
- Department of Medical Imaging, Eugène Marquis Centre, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - T Dréano
- Department of Orthopaedics and Traumatology, Rennes University Hospitals, 2, rue Henri-Le-Guilloux, 35000 Rennes, France
| | - R Guillin
- Department of Medical Imaging, Rennes University Hospitals, Sud Hospital, 16, boulevard de Bulgarie, 35203 Rennes cedex 2, France
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Gruber L, Loizides A, Gruber H. Does ulnar nerve dislocation at the elbow cause neuropathy: What do we learn? Muscle Nerve 2015; 53:493. [PMID: 26418269 DOI: 10.1002/mus.24924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 09/24/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Leonhard Gruber
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria
| | - Alexander Loizides
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria
| | - Hannes Gruber
- Department of Radiology, Innsbruck Medical University, Innsbruck, Austria
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Diagnostic accuracy of ultrasonographic and nerve conduction studies in ulnar neuropathy at the elbow. Clin Neurophysiol 2015; 126:1797-804. [DOI: 10.1016/j.clinph.2014.12.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 11/18/2014] [Accepted: 12/01/2014] [Indexed: 01/29/2023]
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Tagliafico AS, Bignotti B, Martinoli C. Elbow US: Anatomy, Variants, and Scanning Technique. Radiology 2015; 275:636-50. [PMID: 25997130 DOI: 10.1148/radiol.2015141950] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
As with other musculoskeletal joints, elbow ultrasonography (US) depends on the examination technique. Deep knowledge of the relevant anatomy, such as the bone surface anatomy, tendon orientation, nerves, and vessels, is crucial for diagnosis. It is important to be aware of the primary imaging pitfalls related to US technique (anisotropy) in the evaluation of deep tendons such as the distal biceps and peripheral nerves. In this article, US scanning technique for the elbow as well as the related anatomy, primary variants, and scanning pitfalls are described. In addition, an online video tutorial of elbow US describes a possible approach to elbow evaluation. Online supplemental material is available for this article.
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Affiliation(s)
- Alberto S Tagliafico
- From the Institute of Anatomy, Department of Experimental Medicine (DIMES) (A.S.T.), and Department of Health Sciences (DISSAL) (B.B., C.M.), University of Genoa, Largo Rosanna Benzi 8, 16132 Genoa, Italy
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Kim JH, Won SJ, Rhee WI, Park HJ, Hong HM. Diagnostic cutoff value for ultrasonography in the ulnar neuropathy at the elbow. Ann Rehabil Med 2015; 39:170-5. [PMID: 25932412 PMCID: PMC4414962 DOI: 10.5535/arm.2015.39.2.170] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 09/22/2014] [Indexed: 12/13/2022] Open
Abstract
Objective To determine the diagnostic cutoff values of ultrasonographic measurements in ulnar neuropathy at the elbow (UNE). Methods Twenty-five elbows of 23 patients (9 females, 16 males) diagnosed with UNE and 30 elbows of 30 healthy controls (15 females, 15 males) were included in our study. The ulnar nerve cross-sectional area (CSA) was measured at the Guyon canal, midforearm, and maximal swelling point (MS) around the elbow (the cubital tunnel inlet in healthy controls). CSA measurements of the ulnar nerve at each point, the Guyon canal-to-MS ulnar nerve area ratio (MS/G), and the midforearm-to-MS ulnar nerve ratio (MS/F) were calculated. Results Among the variables, only CSA at MS, MS/G, and MS/F displayed significant differences between the control and patient groups. The cutoff value for diagnosing UNE was 8.95 mm2 for the CSA at MS (sensitivity 93.8%, specificity 88.3%), 1.99 for the MS/G (sensitivity 75.0%, specificity 73.3%), and 1.48 for the MS/F (sensitivity 93.8%, specificity 95.0%). Conclusion These findings may be helpful to diagnose UNE.
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Affiliation(s)
- Joo Hee Kim
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Sun Jae Won
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Won Ihl Rhee
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Hye Jung Park
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Hyeon Mi Hong
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
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Peck E, Strakowski JA. Ultrasound evaluation of focal neuropathies in athletes: a clinically-focused review. Br J Sports Med 2015; 49:166-75. [DOI: 10.1136/bjsports-2014-094268] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Grimm A, Heiling B, Schumacher U, Witte OW, Axer H. Ultrasound differentiation of axonal and demyelinating neuropathies. Muscle Nerve 2014; 50:976-83. [PMID: 24634226 DOI: 10.1002/mus.24238] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2014] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Ultrasound can be used to visualize peripheral nerve abnormality. Our objective in this study was to prove whether nerve ultrasound can differentiate between axonal and demyelinating polyneuropathies (PNPs). METHODS Systematic ultrasound measurements of peripheral nerves were performed in 53 patients (25 with demyelinating, 20 with axonal, 8 with mixed neuropathy) and 8 healthy controls. Nerve conduction studies of corresponding nerves were undertaken. RESULTS Analysis of variance revealed significant differences between the groups with regard to motor conduction velocity, compound muscle action potential amplitude, and cross-sectional area (CSA) of different nerves at different locations. Receiver operating characteristic curve analysis revealed CSA measurements to be well suited for detection of demyelinating neuropathies, and boundary values of peripheral nerve CSA could be defined. CONCLUSIONS Systematic ultrasound CSA measurement in different nerves helped detect demyelination, which is an additional cue in the etiological diagnosis of PNP, along with nerve conduction studies and nerve biopsy.
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Affiliation(s)
- Alexander Grimm
- Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany; Department of Neurology, Basel University Hospital, Petersgraben 4 CH-4000, Basel, Switzerland; Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
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Babusiaux D, Laulan J, Bouilleau L, Martin A, Adrien C, Aubertin A, Rabarin F. Contribution of static and dynamic ultrasound in cubital tunnel syndrome. Orthop Traumatol Surg Res 2014; 100:S209-12. [PMID: 24703791 DOI: 10.1016/j.otsr.2014.03.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Electroneuromyography (ENMG) is the gold standard examination in cubital tunnel syndrome (CuTS), but sheds no light on etiology. High-resolution ultrasound (HRU) analyzes the anatomic abnormalities and physical properties of the ulnar nerve (UN) and enables dynamic study. The present non-randomized prospective study compared HRU with clinical, ENMG and intraoperative findings. MATERIAL AND METHODS Sixty patients were included. The McGowan clinical classification as modified by Goldberg was employed, and ENMG lesions were ranked for severity. HRU screened for morphologic abnormalities of the ulnar nerve and cubital tunnel, measuring UN cross-sectional area (UNCSA) and flattening index (FI) in the cubital tunnel, in extension and flexion. UN stability was assessed. RESULTS Ultrasound found 2 stenoses, 29 pseudoneuromas 25 dedifferentiations. There were 16 morphologic abnormalities. Mean cubital tunnel UNCSA (in cm(2)) and FI were respectively 0.112 and 1.549 in extension and 0.117 and 1.827 in flexion. Nineteen cases of UN instability were found on HRU, versus 17 intraoperatively. Only 8 patients showed no abnormality on HRU. Pseudoneuroma or dedifferentiation on HRU correlated with clinical stage (P=0.2579 and 0.2615, respectively). Dedifferentiation was associated with severe abnormality on ENMG (P<0.5). Thirty-two stenoses, 18 pseudoneuromas and 10 epitrochlearis anconeus muscles were found intraoperatively, matching HRU abnormalities. DISCUSSION The present findings were comparable to those of the literature. Cubital tunnel UNCSA was elevated in case of CuTS, with cut-off at 0.112 cm(2). FI was elevated in flexion (P=0.0063). The rate of UN instability was 32%, compared to 21-60% in the literature. HRU findings matched the clinical and ENMG classifications. HRU proved to be an effective diagnostic tool for CuTS and its etiologies. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- D Babusiaux
- CHRU, Hôpital Trousseau, Chirurgie Orthopédique et Traumatologique 1, 37044 Tours cedex 1, France
| | - J Laulan
- CHRU, Hôpital Trousseau, Chirurgie Orthopédique et Traumatologique 1, 37044 Tours cedex 1, France.
| | - L Bouilleau
- CHRU, Hôpital Trousseau, Radiologie, 37044 Tours cedex 1, France
| | - A Martin
- CHRU, Hôpital Trousseau, Radiologie, 37044 Tours cedex 1, France
| | - C Adrien
- Clinique Saint-Léonard, Village Santé Angers Loire, Radiologie, 18, rue de Bellinière, 49800 Trélazé, France
| | - A Aubertin
- Clinique Saint-Léonard, Village Santé Angers Loire, Radiologie, 18, rue de Bellinière, 49800 Trélazé, France
| | - F Rabarin
- Centre de la Main, Village Santé Angers Loire, 47, rue de la Foucaudière, 49800 Trélazé, France
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Bsteh G, Wanschitz JV, Gruber H, Seppi K, Löscher WN. Prognosis and prognostic factors in non-traumatic acute-onset compressive mononeuropathies - radial and peroneal mononeuropathies. Eur J Neurol 2013; 20:981-5. [DOI: 10.1111/ene.12150] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Accepted: 02/14/2013] [Indexed: 01/22/2023]
Affiliation(s)
- G. Bsteh
- Department of Neurology; Innsbruck Medical University; Innsbruck; Austria
| | - J. V. Wanschitz
- Department of Neurology; Innsbruck Medical University; Innsbruck; Austria
| | - H. Gruber
- Department of Radiology; Innsbruck Medical University; Innsbruck; Austria
| | - K. Seppi
- Department of Neurology; Innsbruck Medical University; Innsbruck; Austria
| | - W. N. Löscher
- Department of Neurology; Innsbruck Medical University; Innsbruck; Austria
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Scheidl E, Böhm J, Farbaky Z, Simó M, Bereczki D, Arányi Z. Ultrasonography of ulnar neuropathy at the elbow: Axonal involvement leads to greater nerve swelling than demyelinating nerve lesion. Clin Neurophysiol 2013; 124:619-25. [DOI: 10.1016/j.clinph.2012.08.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 07/14/2012] [Accepted: 08/19/2012] [Indexed: 11/29/2022]
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Dejaco C, Stradner M, Zauner D, Seel W, Simmet NE, Klammer A, Heitzer P, Brickmann K, Gretler J, Fürst-Moazedi FC, Thonhofer R, Husic R, Hermann J, Graninger WB, Quasthoff S. Ultrasound for diagnosis of carpal tunnel syndrome: comparison of different methods to determine median nerve volume and value of power Doppler sonography. Ann Rheum Dis 2012; 72:1934-9. [PMID: 23212030 DOI: 10.1136/annrheumdis-2012-202328] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To compare ultrasound measurement of median nerve cross-sectional area (CSA) at different anatomical landmarks and to assess the value of power Doppler signals within the median nerve for diagnosis of carpal tunnel syndrome (CTS). METHODS A prospective study of 135 consecutive patients with suspected CTS undergoing two visits within 3 months. A final diagnosis of CTS was established by clinical and electrophysiological findings. CSA was sonographically measured at five different levels at forearm and wrist; and CSA wrist to forearm ratios or differences were calculated. Intraneural power Doppler signals were semiquantitatively graded. Diagnostic values of different ultrasound methods were compared by receiver operating characteristic curves using SPSS. RESULTS CTS was diagnosed in 111 (45.5%) wrists; 84 (34.4%) had no CTS and 49 (20.1%) were possible CTS cases. Diagnostic values were comparable for all sonographic methods to determine median nerve swelling, with area under the curves ranging from 0.75 to 0.85. Thresholds of 9.8 and 13.8 mm(2) for the largest CSA of the median nerve yielded a sensitivity of 92% and a specificity of 92%. A power Doppler score of 2 or greater had a specificity of 90% for the diagnosis of CTS. Sonographic median nerve volumetry revealed a good reliability with an intraclass correlation coefficient of 0.90 (95% CI 0.79 to 0.95). CONCLUSIONS Sonographic assessment of median nerve swelling and vascularity allows for a reliable diagnosis of CTS. Determination of CSA at its maximal shape offers an easily reproducible tool for CTS classification in daily clinical practice.
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Affiliation(s)
- Christian Dejaco
- Department of Rheumatology and Immunology, Medical University Graz, , Graz, Austria
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Pompe SM, Beekman R. Which ultrasonographic measure has the upper hand in ulnar neuropathy at the elbow? Clin Neurophysiol 2012; 124:190-6. [PMID: 23036180 DOI: 10.1016/j.clinph.2012.05.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 04/09/2012] [Accepted: 05/15/2012] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To compare the diagnostic accuracy of ultrasonographic ulnar nerve diameter, cross-sectional area (CSA) and swelling ratio measurement in ulnar neuropathy at the elbow (UNE). METHODS Ultrasonographic diameter, CSA, and swelling ratio measurements were compared with a reference standard including clinical examination, electrophysiological studies, and follow-up in a prospective cohort of patients. All patients in whom a diagnosis of UNE was considered were eligible for the study. Reference values for ultrasonography were obtained in 73 healthy volunteers. RESULTS Of 191 patients, 137 had UNE or probable UNE, while 54 had another condition and these were analysed as patient controls. Patients with UNE had a larger ulnar nerve diameter, CSA and swelling ratio than healthy controls and patient controls (p < 0.01). The diagnostic accuracies of these different measurements were comparable with a specificity of 78-87%, a positive predictive value of 87-90%, a sensitivity of 42-61% and negative predictive value of 37-44%. ROC-analysis for these measurements showed an area under the curve of 0.75-0.77. CONCLUSION Ultrasonographic measurements of ulnar nerve diameter, CSA and swelling ratio have comparable diagnostic value, which was lower than reported previously. SIGNIFICANCE Ultrasonographic ulnar nerve diameter, CSA and swelling ratio measurements are equally useful in diagnosing UNE.
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Affiliation(s)
- Sander M Pompe
- Departments of Neurology and Clinical Neurophysiology, Atrium Medical Centre Heerlen, The Netherlands.
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Hobson-Webb LD, Padua L, Martinoli C. Ultrasonography in the diagnosis of peripheral nerve disease. ACTA ACUST UNITED AC 2012; 6:457-71. [PMID: 23480810 DOI: 10.1517/17530059.2012.692904] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION High-resolution ultrasound (US) of the peripheral nerves is now a standard means of assessing neuromuscular disorders in many centers. Currently used in conjunction with electrodiagnostic (EDX) studies, nerve US is especially effective in the diagnosis of entrapment neuropathies. AREAS COVERED This article reviews the basic physics of peripheral nerve US, guidelines for its current use and future directions. Advantages of using nerve US alongside EDX studies are outlined along with current limitations of testing. The role of US in the diagnosis of entrapment neuropathy is emphasized, particularly in carpal tunnel syndrome (CTS). US assisted diagnosis of peripheral nerve tumors, hereditary neuropathy and dysimmune neuropathy and traumatic injuries is also described. EXPERT OPINION US is a powerful tool in the assessment of peripheral nerve disease. Nerve US is an evolving, young discipline. There is still much to learn, but current evidence supports US imaging of all patients presenting for evaluation of possible mononeuropathy. With improvements in resolution, the introduction of US contrast agents and objective measures of nerve echogenicity, there is promise for further expanding its role in the diagnosis of all peripheral neuropathies.
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Affiliation(s)
- Lisa D Hobson-Webb
- Duke University Medical Center, Department of Neurology , Durham, NC 27710 , USA +1 919 668 2277 ; +1 919 660 3853 ;
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Padua L, Martinoli C, Pazzaglia C, Lucchetta M, Granata G, Erra C, Briani C. Intra- and internerve cross-sectional area variability: new ultrasound measures. Muscle Nerve 2012; 45:730-3. [PMID: 22499101 DOI: 10.1002/mus.23252] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Nerve involvement in immune-related neuropathies is non-homogeneous, and therefore characterization of ultrasound (US) abnormalities is difficult. We developed two measures to quantify US abnormalities in immune-related neuropathies. METHODS Intranerve cross-sectional area (CSA) variability for each nerve was calculated as: maximal CSA/minimal CSA. Internerve CSA variability for each patient was calculated as: maximal intranerve CSA variability/minimal intranerve CSA variability. Six patients underwent US evaluation of the median, ulnar, and fibular nerves, and the abnormalities were scored with our newly developed measures. RESULTS The new measures were applicable to all nerves and patients. The highest degree of intra- and internerve CSA variability was observed in multifocal motor neuropathy, consistent with the asymmetric characteristics of this neuropathy. CONCLUSIONS The application of intra- and internerve CSA variability measures allows us to quantify the heterogeneity of nerves and nerve segments and identify different US patterns in diverse immune-related neuropathies.
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Affiliation(s)
- Luca Padua
- Department of Neurosciences, Institute of Neurology, Catholic University, Rome, Italy.
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Childs JT, Phillips M, Thoirs KA. Impact of ancestry and body size on sonographic ulnar nerve dimensions. Radiography (Lond) 2012. [DOI: 10.1016/j.radi.2011.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Boom J, Visser LH. Quantitative assessment of nerve echogenicity: comparison of methods for evaluating nerve echogenicity in ulnar neuropathy at the elbow. Clin Neurophysiol 2012; 123:1446-53. [PMID: 22217961 DOI: 10.1016/j.clinph.2011.10.050] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 10/05/2011] [Accepted: 10/24/2011] [Indexed: 01/03/2023]
Abstract
OBJECTIVE The objective is to evaluate different methods to assess nerve echogenicity in a quantitative way by comparing a group of patients with ulnar neuropathy at the elbow (UNE) and a healthy control group, subsequently selecting the best tests for quantitative assessment of nerve echogenicity. METHODS We included 56 patients with UNE and 37 healthy controls. High-resolution ultrasonography images of the ulnar nerve at the level of the medial epicondyle were saved in JPEG, TIFF or DICOM format, with a 19 pixels/mm resolution. Hypoechoic fraction was calculated by using 1 manual and 16 automatic thresholding methods. RESULTS A significant difference in mean hypoechoic fraction between patients and controls was found using the following automatic thresholding methods: MaxEntropy 82% versus 74% (p < 0.001), RenyiEntropy 80% versus 69% (p < 0.001), Shanbhag 76% versus 68% (p = 0.002), Triangle 45% versus 58% (p = 0.036) and Yen 79% versus 67% (p < 0.001). Of these five tests a significant correlation between hypoechoic fraction and the cross-sectional area was found for: MaxEntropy 0.542 (p < 0.001), RenyiEntropy 0.558 (p < 0.001), Shanbhag 0.219 (p = 0.035) and Yen 0.513 (p < 0.001). The manual thresholding method did not detect a significant difference in hypoechoic fraction between patients and controls, and inter-rater agreement in hypoechoic fraction for manual thresholding was poor. CONCLUSION Quantitative nerve echogenicity assessment can be successfully used to distinguish between a group of patients with UNE and a healthy control group, preferably by using the MaxEntropy, RenyiEntropy or Yen methods. SIGNIFICANCE Automatic thresholding techniques using the MaxEntropy, RenyiEntropy or Yen methods are the best quantitative tests, and these quantitative measures can probably be used in further studies evaluating echogenicity in mono- and polyneuropathies.
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Affiliation(s)
- J Boom
- Department of Neurology, St Elisabeth Hospital, Tilburg, The Netherlands
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Beekman R, Visser LH, Verhagen WI. Ultrasonography in ulnar neuropathy at the elbow: a critical review. Muscle Nerve 2011; 43:627-35. [PMID: 21484821 DOI: 10.1002/mus.22019] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Ultrasonography of the ulnar nerve has been recommended as a useful additional test in ulnar neuropathy at the elbow (UNE). METHODS We searched the literature and systemically reviewed all clinical trials in UNE. We also looked for articles about the normal sonoanatomy and specific causes of UNE. RESULTS Seven of 14 clinical trials in UNE were suitable for further analysis. Ultrasonographic ulnar nerve size measurement appears to be a test with good diagnostic accuracy. The most frequently reported abnormality was an increased cross-sectional area of the ulnar nerve at the elbow. However, several studies had methodological flaws. In addition, the ultrasonographic techniques and study designs differed among the studies. There were a few other uncontrolled studies about the underlying causes of UNE. DISCUSSION The role of ultrasonography in UNE seems promising but could not be firmly established. More prospective studies are needed, and we make several recommendations for further research.
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Affiliation(s)
- Roy Beekman
- Department of Neurology, Atrium Medical Centre, PO Box 4446, 6401 CX, Heerlen, The Netherlands.
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