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Ahmadli N, Akgun K, Terlemez R, Misirlioglu TO, Palamar D. Ultrasonographic evaluation of ulnar nerve morphology in patients with ulnar nerve instability. Muscle Nerve 2024; 69:543-547. [PMID: 38356457 DOI: 10.1002/mus.28058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/16/2024]
Abstract
INTRODUCTION/AIMS Ulnar nerve instability (UNI) in the retroepicondylar groove is described as nerve subluxation or dislocation. In this study, considering that instability may cause chronic ulnar nerve damage by increasing the friction risk, we aimed to examine the effects of UNI on nerve morphology ultrasonographically. METHODS Asymptomatic patients with clinical suspicion of UNI were referred for further clinical and ultrasonographic examination. Based on ulnar nerve mobility on ultrasound, the patients were first divided into two groups: stable and unstable. The unstable group was further divided into two subgroups: subluxation and dislocation. The cross-sectional area (CSA) of the nerve was measured in three regions relative to the medial epicondyle (ME). RESULTS In the ultrasonographic evaluation, UNI was identified in 59.1% (52) of the 88 elbows. UNI was bilateral in 50% (22) of the 44 patients. Mean CSA was not significantly different between groups. A statistically significant difference in ulnar nerve mobility was found between the group with CSA of <10 versus ≥10 mm2 (p = .027). Nerve instability was found in 85.7% of elbows with an ulnar nerve CSA value of ≥10 mm2 at the ME level. DISCUSSION The probability of developing neuropathy in patients with UNI may be higher than in those with normal nerve mobility. Further prospective studies are required to elucidate whether asymptomatic individuals with UNI and increased CSA may be at risk for developing symptomatic ulnar neuropathy at the elbow.
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Affiliation(s)
- Narmin Ahmadli
- Department of Physical Medicine and Rehabilitation, İstanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey
| | - Kenan Akgun
- Department of Physical Medicine and Rehabilitation, İstanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey
| | - Rana Terlemez
- Department of Physical Medicine and Rehabilitation, İstanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey
| | - Tugce Ozekli Misirlioglu
- Department of Physical Medicine and Rehabilitation, İstanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey
| | - Deniz Palamar
- Department of Physical Medicine and Rehabilitation, İstanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey
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Lee TY, Dy CJ, Ray WZ, Colorado BS, Brogan DM. Gray-Scale and Power Doppler Ultrasound Findings Predictive of Cubital Tunnel Syndrome Severity. Hand (N Y) 2024; 19:392-399. [PMID: 36218028 PMCID: PMC11067851 DOI: 10.1177/15589447221127334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The use of ultrasound in the diagnosis of cubital tunnel syndrome (CuTS) is an attractive alternative to electrodiagnostic (EDX) studies, but its utility is binary with poor severity correlation. We hypothesize that increasing ulnar nerve cross-sectional area (CSA) and power Doppler measurement of intraneural vascularity may predict the extent of disease. METHODS We identified 20 elbows from patients with a history of CuTS and 20 elbows in 10 asymptomatic controls. Electrodiagnosis was performed for symptomatic patients. Gray-scale ultrasound and power Doppler ultrasound were performed to measure CSA and intraneural vascularity in all participants. Functional measures, Boston Carpal Tunnel Questionnaire (BCTQ), and Patient-Reported Outcomes Measurement Information System surveys were also completed. RESULTS A strong positive correlation was found between CSA and motor nerve conduction velocity (MNCV) decrease between elbow and forearm, which increased when BCTQ >2 was used as a screening criterion. Increased CSA also demonstrated a high positive predictive value (PPV) in predicting MNCV changes, but poor ability to predict axonal loss. In contrast, power Doppler ultrasound demonstrated 100% PPV and 94% negative predictive value (NPV) in predicting severe CuTS (defined as compound motor action potential [CMAP] amplitude <6 mV and electromyography [EMG] findings). CONCLUSIONS Cross-sectional area is a sensitive method for identifying changes in MNCV and amplitude but does not stratify disease severity, as defined by diminished CMAP amplitude and/or evidence of denervation on EMG. The presence of increased intraneural vascularity is relatively sensitive but highly specific for axonal loss. The combination of nerve CSA, BCTQ screening, and power Doppler ultrasound may provide an alternative means for CuTS assessment.
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Manske RC, Voight M, Page P, Wolfe C. Utilizing Diagnostic Musculoskeletal Ultrasound in the Evaluation of Cubital Tunnel Syndrome and Ulnar Nerve Pathology. Int J Sports Phys Ther 2024; 19:502-506. [PMID: 38576834 PMCID: PMC10987310 DOI: 10.26603/001c.115363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024] Open
Abstract
Cubital Tunnel Syndrome (CTS), is a frequently encountered condition in clinical settings, typically arising from static or dynamic compression of the ulnar nerve. CTS is characterized by the irritation of the ulnar nerve within the cubital tunnel and is a common neuropathic condition that can significantly impact functional abilities and quality of life. This article explores the utility of diagnostic musculoskeletal ultrasound (MSK-US) in the evaluation of the cubital tunnel and the ulnar nerve. The cubital tunnel syndrome, a common entrapment neuropathy of the ulnar nerve, often presents diagnostic challenges. Traditionally, nerve conduction studies and electromyography have been the primary diagnostic tools used to diagnose CTS. Given the superficial nature of the ulnar groove and its adjacent structures, MSK-US imaging known for its non-invasive nature and high-resolution imaging capabilities, has become an increasingly valuable tool in the assessment and management of various musculoskeletal conditions. This article reviews the technical aspects of MSK-US, its advantages in visualizing the ulnar nerve and related structures, and its implications in clinical practice for rehabilitation providers. By integrating MSK-US in the evaluation of CTS, rehabilitation professionals can enhance diagnostic accuracy, tailor interventions, and improve patient outcomes.
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Looney AM, Day HK, Reddy MP, Paul RW, Nazarian LN, Cohen SB. Prevalence of bilateral ulnar nerve subluxation among professional baseball pitchers. J Shoulder Elbow Surg 2024; 33:550-555. [PMID: 37890764 DOI: 10.1016/j.jse.2023.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/12/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Radiographic and physical examination findings of ulnar nerve instability have been recognized in overhead throwing athletes, despite the fact that some of these abnormalities may be asymptomatic and represent adaptive changes. While recommendations for screening and early detection have been made that can adversely impact an athletes' career, the presence of bilateral ulnar nerve subluxation and its relationship with medial elbow symptoms has not been characterized in professional overhead throwing athletes. PURPOSE To characterize the prevalence of bilateral ulnar nerve subluxation among professional baseball pitchers. METHODS A cross-sectional observational analysis was conducted utilizing standardized ultrasonographic examinations of bilateral elbows in 91 consecutive professional baseball pitchers (median age, 22 years; range, 17-30 years). The relationship between ulnar nerve subluxation and ulnar nerve signs, symptoms, and provocative physical examination maneuvers was also investigated. RESULTS The prevalence of bilateral ulnar nerve subluxation was 26.4% (95% CI, 17.7%-36.7%; 24 of the 91 athletes). Thirty-five athletes (38.5%; 95% CI, 28.4%-49.2%) had subluxation in at least 1 elbow. No athletes with subluxation had positive ulnar nerve signs, symptoms, or provocative tests. CONCLUSION Ulnar nerve subluxation is common among professional pitchers, and is more often than not bilateral. In this population of athletes, ulnar nerve subluxation does not appear to be associated with pathological findings.
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Affiliation(s)
- Austin M Looney
- The Rothman Orthopaedic Institute, Sports Medicine Division, Philadelphia, PA, USA
| | - Hannah K Day
- Georgetown University School of Medicine, Washington, DC, USA
| | - Manoj P Reddy
- The Rothman Orthopaedic Institute, Sports Medicine Division, Philadelphia, PA, USA
| | - Ryan W Paul
- The Rothman Orthopaedic Institute, Sports Medicine Division, Philadelphia, PA, USA; Hackensack Meridian School of Medicine, Nutley, NJ, USA
| | - Levon N Nazarian
- Department of Radiology, Thomas Jefferson University and Hospitals, Philadelphia, PA, USA
| | - Steven B Cohen
- The Rothman Orthopaedic Institute, Sports Medicine Division, Philadelphia, PA, USA.
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Liu L, Wang T, Qi H, Cui L, Bao S, Teng J. Multimodal ultrasound evaluation of asymptomatic ulnar nerve dislocation at the cubital tunnel. Quant Imaging Med Surg 2024; 14:633-639. [PMID: 38223050 PMCID: PMC10784024 DOI: 10.21037/qims-23-301] [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: 03/11/2023] [Accepted: 11/20/2023] [Indexed: 01/16/2024]
Abstract
Background Ultrasonography has received broad acceptance as an effective peripheral nervous imaging examination. Shear wave elastography (SWE) can quantitatively assess the stiffness of nerves; however, little research has been conducted on elastography for ulnar nerve dislocation. The purpose of this study was thus to investigate the characteristics of multimodal ultrasound, including high-resolution ultrasonography and SWE, for asymptomatic ulnar nerve dislocation at cubital tunnel. Methods In this prospective cross-sectional study, 41 participants were recruited in Shandong Provincial Hospital Affiliated to Shandong First Medical University in July 2022. The inclusion criteria for participants were being in good health and being 18-60 years of age. Meanwhile, the exclusion criterion was a history of upper limb pain or fractures, peripheral neuropathy, or systemic or immunological diseases. Finally, 38 participants were enrolled. Two ultrasound doctors measured the maximum diameter, the maximum cross-sectional area (CSA), and the shear modulus of the ulnar nerve at the cubital tunnel independently. Another two ultrasound doctors determined whether dislocation was present during dynamic elbow flexion and extension and divided the elbows into a dislocation group and a control group. The descriptive statistics and independent sample t-test were used for data analysis, and intragroup correlation coefficient (ICC) was used to determine the consistency of evaluation between observers. Results Ulnar nerve dislocation was observed in 15.8% (12/76) of the ulnar nerves. There was no significant difference in the maximum diameter between the dislocation group (0.194±0.022 cm) and the control group (0.181±0.023 cm) (t=1.888; P=0.063). The CSA and SWE of the ulnar nerve were 0.064±0.009 cm2 and 43.629±6.737 kPa in the dislocation group, respectively, and were 0.050±0.008 cm2 and 31.293±7.858 kPa in the control group, respectively. There were significant differences between the two groups in terms of CSA (P<0.001) and SWE (P<0.001). The ICCs of the maximum diameter, CSA, and SWE values between observers were 0.970, 0.900, and 0.915, respectively. Conclusions Multimodal ultrasound consisting of high-resolution ultrasonography combined with elastography can comprehensively and quantitatively evaluate the morphological changes and mechanical properties of the dislocated ulnar nerve and monitor disease progress.
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Affiliation(s)
- Lihua Liu
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Tiezheng Wang
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hengtao Qi
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Liyuan Cui
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shougang Bao
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jianbo Teng
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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Dąbrowska A, Paluch Ł, Pietruski P, Walecka I, Noszczyk B. The elastography of distal ulnar nerve branches in cyclists. J Hand Ther 2024; 37:53-59. [PMID: 37591729 DOI: 10.1016/j.jht.2023.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/10/2023] [Accepted: 05/15/2023] [Indexed: 08/19/2023]
Abstract
INTRODUCTION Forced elbow flexion and pressure during bicycling result in ulnar nerve traction and pressure exerted in Guyon's canal or the nerve's distal branches. The compression of the nerves causes a change in their stiffness related to edema and eventually gradual fibrosis. PURPOSE This study aimed to evaluate the elastography of terminal branches of the ulnar nerve in cyclists. STUDY DESIGN Cross-sectional study. METHODS Thirty cyclists, 32 healthy individuals, and 32 volunteers with ulnar nerve entrapment neuropathies participated in the study. Each participant underwent a nerve examination of the cubital tunnel, Guyon's canal and the deep and superficial branches of the ulnar nerve using shear wave elastography. The cyclist group was tested before and after a 2-hour-long workout. RESULTS Before cycling workouts, the ulnar nerve stiffness in the cubital tunnel and Guyon's canal remained below pathological estimates. Cycling workouts altered nerve stiffness in the cubital tunnel only. Notably, the stiffness of the ulnar terminal branches in cyclists was increased even before training. The mean deep branch stiffness was 50.85 ± 7.60 kPa versus 20.43 ± 5.95 kPa (p < 0.001) in the cyclist and healthy groups, respectively, and the mean superficial branch stiffness was 44 ± 12.45 kPa versus 24.55 ± 8.05 kPa (p < 0.001), respectively. Cycling contributed to a further shift in all observed values. DISCUSSION These observations indicate the existence of persistent anatomical changes in the distal ulnar branches in resting cyclists that result in increased stiffness of these nerves. The severity of these changes remains, however, to be determined. CONCLUSIONS These data show elastography values of the ulnar terminal branches in healthy individuals and cyclists where despite lack of clinical symptoms that they seem to be elevated twice above the healthy range.
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Affiliation(s)
- Agnieszka Dąbrowska
- Department of Radiology, Centre of Postgraduate Medical Education, Gruca Orthopaedic and Trauma Teaching Hospital, Otwock, Poland
| | - Łukasz Paluch
- Department of Radiology, Centre of Postgraduate Medical Education, Gruca Orthopaedic and Trauma Teaching Hospital, Otwock, Poland
| | - Piotr Pietruski
- Department of Plastic and Reconstructive Surgery, Centre of Postgraduate Medical Education, Orlowski Memorial Hospital, Warsaw, Poland
| | - Irena Walecka
- Department of Dermatology, Centre of Postgraduate Medical Education, Central Clinical Hospital of the MSWiA, Warsaw, Poland
| | - Bartłomiej Noszczyk
- Department of Plastic and Reconstructive Surgery, Centre of Postgraduate Medical Education, Orlowski Memorial Hospital, Warsaw, Poland.
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Looney AM, Day HK, Reddy MP, Paul RW, Nazarian LN, Cohen SB. Physical Examination Versus Ultrasonography for Detection of Ulnar Nerve Subluxation in Professional Baseball Pitchers. Orthop J Sports Med 2023; 11:23259671231208234. [PMID: 38021308 PMCID: PMC10631351 DOI: 10.1177/23259671231208234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/19/2023] [Indexed: 12/01/2023] Open
Abstract
Background Despite the importance of accurately detecting ulnar nerve subluxation in vulnerable athletes, few studies have compared the performance of physical examination and ultrasound in this population. Purpose/Hypothesis The purpose of this study was to compare the diagnostic validity of physical examination versus ultrasound in detecting ulnar nerve subluxation at the cubital tunnel of the elbow in professional baseball pitchers. It was hypothesized that ultrasound would more sensitively detect ulnar nerve subluxation. Study Design Cohort study (diagnosis); Level of evidence, 2. Methods Physical and sonographic examinations for ulnar nerve subluxation were performed on 186 elbows of 95 consecutive male professional baseball pitchers (age, 17-30 years) as a routine part of their spring training assessments. Provocative maneuvers consisting of the Tinel and elbow flexion-compression tests were evaluated over the cubital tunnel. The validity of physical examination for detecting ulnar nerve subluxation at the elbow was determined using ultrasonographic examination for comparison. Results Ulnar nerve subluxation was detected by physical examination in 58 (31.2%) elbows and by ultrasonography in 61 (32.8%) elbows. Of the 58 elbows with positive physical examination, 47 were positive on ultrasound. Using a positive ultrasound as a reference, the accuracy of the physical examination was 86.6%, with 77% sensitivity and 91.2% specificity. The positive and negative predictive values of physical examination were 81% and 89.1%, respectively. There was no relationship between nerve instability and positive provocative tests overall, in dominant versus nondominant arms, or in right versus left arms (P > .05 for all). Conclusion Physical examination had moderate sensitivity and high specificity for detecting ulnar nerve subluxation at the cubital tunnel of the elbow when compared with ultrasound. These findings suggest that when detecting the presence of a subluxating ulnar nerve is most important, it may be advisable to obtain an ultrasound evaluation instead of relying on a physical examination; however, physical examination alone may be appropriate for ruling out subluxation.
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Affiliation(s)
- Austin M. Looney
- Guilford Orthopaedics and Sports Medicine, Greensboro, North Carolina, USA
- Sports Medicine Division, The Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | - Hannah K. Day
- University of California–Davis Medical Center, Sacramento, California, USA
| | - Manoj P. Reddy
- Baylor Scott & White Orthopedic Associates of Dallas, Dallas, Texas, USA
- Sports Medicine Division, The Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | - Ryan W. Paul
- Sports Medicine Division, The Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | - Levon N. Nazarian
- Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Steven B. Cohen
- Sports Medicine Division, The Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
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Pirri C, Pirri N, Stecco C, Macchi V, Porzionato A, De Caro R, Özçakar L. Hearing and Seeing Nerve/Tendon Snapping: A Systematic Review on Dynamic Ultrasound Examination. SENSORS (BASEL, SWITZERLAND) 2023; 23:6732. [PMID: 37571516 PMCID: PMC10422582 DOI: 10.3390/s23156732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/18/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Nerve/tendon snapping can occur due to their sudden displacement during the movement of an adjacent joint, and the clinical condition can really be painful. It can actually be challenging to determine the specific anatomic structure causing the snapping in various body regions. In this sense, ultrasound examination, with all its advantages (especially providing dynamic imaging), appears to be quite promising. To date, there are no comprehensive reviews reporting on the use of dynamic ultrasound examination in the diagnosis of nerve/tendon snapping. Accordingly, this article aims to provide a substantial discussion as to how US examination would contribute to 'seeing' and 'hearing' these pathologies' different maneuvers/movements.
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Affiliation(s)
- Carmelo Pirri
- Department of Neurosciences, Institute of Human Anatomy, University of Padova, 35121 Padova, Italy; (C.S.); (V.M.); (A.P.); (R.D.C.)
| | - Nina Pirri
- Department of Medicine—DIMED, School of Radiology, Radiology Institute, University of Padua, 35122 Padova, Italy;
| | - Carla Stecco
- Department of Neurosciences, Institute of Human Anatomy, University of Padova, 35121 Padova, Italy; (C.S.); (V.M.); (A.P.); (R.D.C.)
| | - Veronica Macchi
- Department of Neurosciences, Institute of Human Anatomy, University of Padova, 35121 Padova, Italy; (C.S.); (V.M.); (A.P.); (R.D.C.)
| | - Andrea Porzionato
- Department of Neurosciences, Institute of Human Anatomy, University of Padova, 35121 Padova, Italy; (C.S.); (V.M.); (A.P.); (R.D.C.)
| | - Raffaele De Caro
- Department of Neurosciences, Institute of Human Anatomy, University of Padova, 35121 Padova, Italy; (C.S.); (V.M.); (A.P.); (R.D.C.)
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, 06100 Ankara, Turkey;
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Voerman SF, Degreef I. In Situ Stabilization of the Ulnar Nerve as an Alternative to Transposition in Traumatic Ulnar Nerve Instability: A Case Report. JBJS Case Connect 2023; 13:01709767-202309000-00025. [PMID: 37535767 DOI: 10.2106/jbjs.cc.23.00153] [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: 08/05/2023]
Abstract
CASE We present the case of a 25-year-old male sports climber treated with in situ ulnar nerve stabilization for ulnar nerve instability (UNI) by using 2 fascial flaps. CONCLUSION Symptomatic UNI has traditionally been managed with subcutaneous or submuscular ulnar nerve transposition. Transposition is relatively invasive and when performed subcutaneously, embeds the ulnar nerve in an exposed location, which may render it prone to mechanical injury in physically active patients. In situ stabilization may be a less invasive alternative to transposition in select patients involved in sports such as rock climbing.
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Affiliation(s)
| | - Ilse Degreef
- Department of Orthopaedic Surgery, Leuven University Hospitals, Leuven, Belgium
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10
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Samet JD. Ultrasound of peripheral nerve injury. Pediatr Radiol 2023; 53:1539-1552. [PMID: 36914838 DOI: 10.1007/s00247-023-05631-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/07/2023] [Accepted: 02/11/2023] [Indexed: 03/16/2023]
Abstract
Nerve injury in children is important to recognize early given the greater chance for recovery. Both children and adults have better outcomes the sooner nerve injuries are recognized and repaired. Children have even better functional results after surgical repair, thought to be related to their neural plasticity. Ultrasound is a powerful diagnostic tool for grading and mapping peripheral nerve injury and is complementary to electromyography and nerve conduction studies. Nerve injuries can be classified into low and high grade with ultrasound adding essential prognostic information and aiding in patient management. High-grade nerve injuries likely require surgical intervention. This article will review nerve anatomy and injury grading systems that radiologists can learn quickly in order to accurately communicate with their clinical partners. A practical approach to describe the sonographic appearance of nerve injury will be discussed. This article will show radiologists how the added value of ultrasound for peripheral nerve injury can directly affect clinical management.
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Affiliation(s)
- Jonathan D Samet
- Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, 225 E Chicago Ave, Chicago, IL, 60611, USA.
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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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Ricci V, Güvener O, Chang KV, Wu WT, Mezian K, Kara M, Leblebicioğlu G, Pirri C, Ata AM, Dughbaj M, Jain NB, Stecco C, Özçakar L. EURO-MUSCULUS/USPRM Dynamic Ultrasound Protocols for Elbow. Am J Phys Med Rehabil 2022; 101:e83-e92. [PMID: 34930863 DOI: 10.1097/phm.0000000000001915] [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: 11/26/2022]
Abstract
ABSTRACT In this dynamic protocol, ultrasound examination of the elbow using different maneuvers is described for several/relevant elbow problems. Scanning videos are coupled with real-time patient examination videos for better understanding. The authors believe that this practical guide-prepared by an international consensus of several experts (EURO-MUSCULUS: European Musculoskeletal Ultrasound Study Group and USPRM: Ultrasound Study Group of ISPRM [International Society of Physical and Rehabilitation Medicine])-will help musculoskeletal physicians perform a better and uniform/standard approach.
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Affiliation(s)
- Vincenzo Ricci
- From the Physical and Rehabilitation Medicine Unit, Luigi Sacco University Hospital, ASST Fatebenefratelli-Sacco, Milan, Italy (VR); Department of Physical and Rehabilitation Medicine, Mersin University Medical School, Mersin, Turkey (OG); Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan (K-VC, W-TW); National Taiwan University College of Medicine, Taipei, Taiwan (K-VC); Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic (KM); Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey (MK, LÖ); The Hand Clinic, Ankara, Turkey (GL); Department of Neurosciences, Institute of Human Anatomy, University of Padova, Padova, Italy (CP, CS); Ankara City Hospital, Physical Medicine and Rehabilitation Hospital, Ankara, Turkey (AMA); Physical Medicine and Rehabilitation Hospital, Ministry of Health, Kuwait City, Kuwait (MD); and Departments of Physical Medicine and Rehabilitation, Orthopaedics, and Population and Data Sciences, University of Texas Southwestern, Dallas, Texas (NBJ)
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Ferguson DP, Grewal R. Cubital Tunnel Syndrome: Review of Diagnosis and Management. HANDCHIR MIKROCHIR P 2022; 54:253-262. [PMID: 35688432 DOI: 10.1055/a-1808-6973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Cubital tunnel syndrome is one of the most common upper extremity nerve entrapment conditions. Clinical examination and electrodiagnostic studies assist in the diagnosis. Mild cases can be successfully treated conservatively, aiming to reduce traction and compression on the nerve. Surgical management of cubital tunnel syndrome is increasing in frequency. Multiple surgical options exist ranging from simple decompression to decompression and anterior transposition of the nerve. There is no preferred surgical technique. It is critical to reduce the risk of recurrent cubital tunnel syndrome. Revision surgical procedures have worse outcomes than primary surgical procedures.
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Affiliation(s)
| | - Ruby Grewal
- University of Western Ontario Roth
- McFarlane Hand and Upper Limb Center
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14
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Quantifying the Elasticity Properties of the Median Nerve during the Upper Limb Neurodynamic Test 1. Appl Bionics Biomech 2022; 2022:3300835. [PMID: 35355794 PMCID: PMC8958106 DOI: 10.1155/2022/3300835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/29/2022] [Accepted: 03/04/2022] [Indexed: 12/04/2022] Open
Abstract
Background The upper limb neurodynamic test 1 (ULNT1) consists of a series of movements that are thought to detect an increase in neuromechanical sensitivity. In vivo, no trail was made to quantify the association between the nerve elasticity and different limb postures during ULNT1. Objectives (1) To investigate the relationship between nerve elasticity and limb postures during ULNT1 and (2) to investigate the intra- and interoperator reliabilities of shear wave elastography (SWE) in quantifying the elasticity of median nerve. Methods Twenty healthy subjects (mean age: 19.9 ± 1.4 years old) participated in this study. The median nerve was imaged during elbow extension in the following postures: (1) with neutral posture, (2) with wrist extension (WE), (3) with contralateral cervical flexion (CCF), and (4) with both WE and CCF. The intra- and interoperator reliabilities measured by two operators at NP and CCF+WE and intraclass correlation coefficients (ICCs) were calculated. Results The intraoperator (ICC = 0.72–0.75) and interoperator (ICC = 0.89–0.94) reliabilities for measuring the elasticity of the median nerve ranged from good to excellent. The mean shear modulus of the median nerve increased by 53.68% from NP to WE+CCF. Conclusion SWE is a reliable tool to quantify the elasticity of the median nerve. There was acute modulation in the elasticity of the median nerve during the ULNT1 when healthy participants reported substantial discomfort. Further studies need to focus on the elasticity properties of the median nerve in patients with peripheral neuropathic pain.
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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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Post-Operative Assessment of Ulnar Nerve Tension Using Shear-Wave Elastography. Neurol Int 2021; 13:469-476. [PMID: 34564291 PMCID: PMC8482121 DOI: 10.3390/neurolint13030046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Ulnar nerve compression at the elbow level is the second-most common entrapment neuropathy. The aim of this study was to use shear-wave elastography for the quantification of ulnar nerve elasticity in patients after ulnar nerve decompression with anterior transposition and in the contralateral non-operative side. METHOD Eleven patients with confirmed diagnosis and ulnar nerve decompression with anterior transposition were included and examinations were performed on an AixplorerTM ultrasound system (Supersonic Imagine, Aix-en-Provence, France). RESULTS We observed significant differences at 0-degree (p < 0.001), 45-degree (p < 0.05), 90-degree (p < 0.01) and 120-degree (p < 0.001) elbow flexion in the shear elastic modulus of the ulnar nerve in the operative and non-operative sides. There were no statistically significant differences between the elasticity values of the ulnar nerve after transposition at 0-degree elbow flexion and in the non-operative side at 120-degree elbow flexion (p = 0.39), or in the ulnar nerve after transposition at 120-degree elbow flexion and in the non-operative side at 0-degree elbow flexion (p = 0.09). CONCLUSION Shear-wave elastography has the potential to be used postoperatively as a method for assessing nerve tension noninvasively by the estimation of mechanical properties, such as the shear elastic modulus.
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17
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The ultrasonographic assessment of the morphologic changes in the ulnar nerve at the cubital tunnel in Japanese volunteers: relationship between dynamic ulnar nerve instability and clinical symptoms. JSES Int 2021; 5:942-947. [PMID: 34505110 PMCID: PMC8411065 DOI: 10.1016/j.jseint.2021.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background We investigated the differences in the prevalence of ulnar nerve instability (UNI) by hand dominance and evaluated the relationship between UNI and morphologic changes in the ulnar nerve and the clinical findings and upper limb function. Methods This study examined 153 healthy participants (n = 306 elbows; 44 men, 112 women; mean age 65.4 years) who underwent ultrasonography to assess the ulnar nerve cross-sectional area (UNCSA) at three points of the bilateral cubital tunnel at 30° of elbow flexion. Participants were divided into three groups based on the ultrasonography findings of UNI: no instability (type N), subluxation (type S), and dislocation (type D). For the dominant and nondominant sides, we assessed the relationship between the UNCSA and clinical factors, including the age, gender, height, weight, body mass index, fat mass, grip strength, key pinch strength, UNCSA, and Patient-Rated Elbow Evaluation score. Results We identified 75 cases without instability in both elbows and 78 cases with some instability. The prevalence of UNI was 51%. No significant difference was found between hand dominance and the prevalence of UNI. The UNCSA at 1 cm proximal to the medial epicondyle on the bilateral sides in type S was the most increased among three types. Conclusion UNI was identified in almost half of the participants, with no marked difference found in the hand dominance. The UNCSA at 1 cm proximal to the medial epicondyle was significantly increased the most in type S. UNI does not appear to be associated with elbow symptoms in the general population.
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Ulnar Nerve Dislocation and Subluxation from the Cubital Tunnel Are Common in College Athletes. J Clin Med 2021; 10:jcm10143131. [PMID: 34300295 PMCID: PMC8304120 DOI: 10.3390/jcm10143131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Hypermobility of the ulnar nerve from the cubital tunnel reportedly occurs in healthy people without symptoms of ulnar neuropathy. However, the occurrence rate in athletes is unknown. We examined the occurrence rate of ulnar nerve hypermobility using ultrasonography, symptoms, and physical findings in athletes and compared the results of four types of sports. Methods: Medical charts of college athletes competing in baseball, rugby, soccer, and long-distance running between March and November 2018 were retrospectively examined. Dynamic evaluation of the ulnar nerve was performed using ultrasonography and categorized as Types N, S, and D respectively, indicating normal position, subluxation, and dislocation. Subjective and objective findings were evaluated. Results: The present study included 246 male athletes (mean age, 19.7 years; 492 elbows) including 46% Type D, 29.8% Type S, and 24.2% Type N. Subjective findings showed pain and dysesthesia in 9% and 4.5% of participants, respectively, whereas objective findings showed Tinel sign in 6%, nerve tension test in 1.3%, Froment’s sign in 0.5%, and weakness of strength of opponens digiti minimi muscle in 8% of patients with Types D and S. Conclusions: There was a high-frequency hypermobility of the ulnar nerve from the cubital tunnel with or without subjective and objective findings in college athletes.
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Mezian K, Jačisko J, Kaiser R, Machač S, Steyerová P, Sobotová K, Angerová Y, Naňka O. Ulnar Neuropathy at the Elbow: From Ultrasound Scanning to Treatment. Front Neurol 2021; 12:661441. [PMID: 34054704 PMCID: PMC8160369 DOI: 10.3389/fneur.2021.661441] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/23/2021] [Indexed: 01/01/2023] Open
Abstract
Ulnar neuropathy at the elbow (UNE) is commonly encountered in clinical practice. It results from either static or dynamic compression of the ulnar nerve. While the retroepicondylar groove and its surrounding structures are quite superficial, the use of ultrasound (US) imaging is associated with the following advantages: (1) an excellent spatial resolution allows a detailed morphological assessment of the ulnar nerve and adjacent structures, (2) dynamic imaging represents the gold standard for assessing the ulnar nerve stability in the retroepicondylar groove during flexion/extension, and (3) US guidance bears the capability of increasing the accuracy and safety of injections. This review aims to illustrate the ulnar nerve's detailed anatomy at the elbow using cadaveric images to understand better both static and dynamic imaging of the ulnar nerve around the elbow. Pathologies covering ulnar nerve instability, idiopathic cubital tunnel syndrome, space-occupying lesions (e.g., ganglion, heterotopic ossification, aberrant veins, and anconeus epitrochlearis muscle) are presented. Additionally, the authors also exemplify the scientific evidence from the literature supporting the proposition that US guidance is beneficial in injection therapy of UNE. The non-surgical management description covers activity modifications, splinting, neuromobilization/gliding exercise, and physical agents. In the operative treatment description, an emphasis is put on two commonly used approaches-in situ decompression and anterior transpositions.
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Affiliation(s)
- Kamal Mezian
- Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Jakub Jačisko
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czechia
| | - Radek Kaiser
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, Prague, Czechia
| | - Stanislav Machač
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czechia
| | - Petra Steyerová
- Department of Radiology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Karolína Sobotová
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czechia
| | - Yvona Angerová
- Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Ondřej Naňka
- Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czechia
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20
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Bedewi MA, Kotb MA, Aldossary NM, Abodonya AM, Saleh AK, Swify SM. Shear wave elastography of the radial nerve in healthy subjects. J Int Med Res 2021; 49:300060520987938. [PMID: 33459089 PMCID: PMC7816536 DOI: 10.1177/0300060520987938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective This study was performed to examine the sonoelastographic features of the radial nerve in healthy subjects. Methods In this observational cross-sectional study, shear wave elastography was used to evaluate the radial nerve. The cross-sectional area and stiffness were measured. Results The study included 37 nerves in 20 healthy adult subjects. The mean cross-sectional area of the radial nerve at the arm was 6.1 mm2. The mean stiffness of the radial nerve in the short axis was 30.3 kPa, and that in the long axis was 34.9 kPa. The elasticity measurements were significantly different between the long axis and short axis. Conclusion The elastic modulus of the radial nerve was studied in healthy subjects and can serve as a reference for future assessment of different radial nerve pathologies.
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Affiliation(s)
- Mohamed A Bedewi
- Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Mamdouh A Kotb
- Neurology Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia.,Neurology Department, Faculty of Medicine, Minia University, Minia, Egypt
| | - Nasser M Aldossary
- Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Ahmed M Abodonya
- Anesthesia and Intensive Care Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt.,Surgery Department, College of Medicine, Prince Sattam bin Abdulaziz University, Kingdom of Saudi Arabia
| | - Ayman K Saleh
- Surgery Department, College of Medicine, Prince Sattam bin Abdulaziz University, Kingdom of Saudi Arabia.,Orthopedic Department, Faculty of Medicine for Girls, Alazhar University, Cairo
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21
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Frost G, Varey P, Haldane C, Lee T, Finlayson H. Is There an Association Between Ulnar Nerve Hypermobility and Neuropathy at the Elbow? Arch Phys Med Rehabil 2021; 102:2231-2238. [PMID: 33716114 DOI: 10.1016/j.apmr.2021.02.021] [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: 11/05/2020] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To systematically review the association between ulnar nerve hypermobility (UNH) at the elbow and ulnar neuropathy (UNE). DATA SOURCES Cumulative Index to Nursing and Allied Health, MEDLINE, and Embase databases were searched for English language studies published up to July 4, 2020. STUDY SELECTION We included case-control, cohort, and randomized controlled studies that established the presence or absence of UNH and UNE. Twenty out of 654 studies identified met the inclusion criteria. DATA EXTRACTION Two reviewers independently extracted data for analysis. Risk of bias and applicability were assessed with the QUADAS-2 tool. DATA SYNTHESIS We compared rates of UNH between patients diagnosed with and without UNE and found no significant difference. The meta-analysis pooled rate of UNH was 0.37 (95% confidence interval, 0.20-0.57) for those without UNE and 0.33 (95% confidence interval, 0.23-0.45) for those with UNE. CONCLUSIONS The clinical finding of UNH is unhelpful when assessing for UNE, as the presence of UNH does not make the diagnosis of UNE more likely.
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Affiliation(s)
- Geoffrey Frost
- Division of Physical Medicine and Rehabilitation, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Peter Varey
- Division of Physical Medicine and Rehabilitation, Department of Medicine, McMaster University, Hamilton, Ontario
| | - Chloe Haldane
- Division of Physical Medicine and Rehabilitation, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Terry Lee
- Centre for Health Evaluation and Outcome Sciences, Vancouver, British Columbia
| | - Heather Finlayson
- Division of Physical Medicine and Rehabilitation, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia; GF Strong Rehabilitation Centre, Vancouver, British Columbia, Canada.
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22
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Cornelson SM, Ruff AN, Wells C, Sclocco R, Kettner NW. Sonographic measures and sensory threshold of the normal sciatic nerve and hamstring muscles. J Ultrasound 2021; 25:47-57. [PMID: 33515412 PMCID: PMC8964850 DOI: 10.1007/s40477-020-00552-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 12/13/2020] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The sciatic nerve innervates the hamstring muscles. Occasionally, the sciatic nerve is injured along with a hamstring muscle. Detailed biomechanical and sensory thresholds of these structures are not well-characterized. Therefore, we designed a prospective study that explored high-resolution ultrasound (US) at multiple sites to evaluate properties of the sciatic nerve, including cross-sectional area (CSA) and shear-wave elastography (SWE). We also assessed SWE of each hamstring muscle at multiple sites. Mechanical algometry was obtained from the sciatic nerve and hamstring muscles to assess multi-site pressure pain threshold (PPT). METHODS Seventy-nine asymptomatic sciatic nerves and 147 hamstring muscles (25 males, 24 females) aged 18-50 years were evaluated. One chiropractic radiologist with 4.5 years of US experience performed the evaluations. Sciatic nerves were sampled along the posterior thigh at four sites obtaining CSA, SWE, and algometry. All three hamstring muscles were sampled at two sites utilizing SWE and algometry. Descriptive statistics, two-way ANOVA, and rater reliability were assessed for data analysis with p ≤ 0.05. RESULTS A significant decrease in sciatic CSA from proximal to distal was correlated with increasing BMI (p < 0.001). Intra-rater and inter-rater reliability for CSA was moderate and poor, respectively. Elastographic values significantly increased from proximal to distal with significant differences in gender and BMI (p = 0.002). Sciatic PPT significantly decreased between sites 1 and 2, 1 and 3, and 1 and 4. Significant correlation between gender and PPT was noted as well as BMI (p < 0.001). Hamstring muscle elastographic values significantly differed between biceps femoris and semitendinosus (p < 0.001) and biceps femoris and semimembranosus (p < 0.001). All three hamstring muscles demonstrated increased PPT in males compared to females (p < 0.001). In addition, PPT of the biceps femoris correlated with BMI (p = 0.02). CONCLUSION High-resolution US provided useful metrics of sciatic nerve size and biomechanical properties. PPT for the normal sciatic nerve and hamstring muscles was obtained for future clinical application.
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Affiliation(s)
- Stacey M Cornelson
- Department of Radiology, Logan University, 1851 Schoettler Rd, Chesterfield, MO, 63017, USA.
| | - Ashley N Ruff
- Department of Radiology, Logan University, 1851 Schoettler Rd, Chesterfield, MO, 63017, USA
| | - Courtney Wells
- Human Performance Center, Logan University, Chesterfield, MO, USA
| | - Roberta Sclocco
- Department of Radiology, Logan University, 1851 Schoettler Rd, Chesterfield, MO, 63017, USA
- Department of Radiology, Athinoula. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Norman W Kettner
- Department of Radiology, Logan University, 1851 Schoettler Rd, Chesterfield, MO, 63017, USA
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Bedewi MA, Kotb MA, Aldossary NM, Abodonya AM, Alhariqi BA, Swify SM. Shear wave elastography of the ulnar nerve at the forearm. Medicine (Baltimore) 2021; 100:e24071. [PMID: 33466166 PMCID: PMC7808468 DOI: 10.1097/md.0000000000024071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 12/03/2020] [Indexed: 01/05/2023] Open
Abstract
The study included 38 ulnar nerves in 20 healthy subjects. High-resolution ultrasound and Shear wave elastography were used to evaluate the ulnar nerve at the mid forearm. The mean cross-sectional area of the ulnar nerve was 7.1 mm2. The mean shear elastic modulus of the nerve in the short axis was 27.4 kPa. The mean shear elastic modulus of the nerve in long axis was 24.7 kPa. No statistical relation could be noted between elasticity measurements in long and short axes. The ulnar nerve elastic modulus also showed no correlation with CSA neither in the long axis nor short axis. Age, height, weight, and body mass index showed no correlation with the ulnar elastic modulus in short or long axes. The elastic modulus of the ulnar nerve has been determined in healthy subjects and can serve as a reference for future assessment of compressive neuropathies of the ulnar nerve.
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Affiliation(s)
- Mohamed Abdelmohsen Bedewi
- Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Mamdouh A. Kotb
- Neurology Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
- Neurology Department, Faculty of Medicine, Minia University, Minia, Egypt
| | - Nasser M. Aldossary
- Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Ahmed M. Abodonya
- Anesthesia and Intensive Care Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
- Surgery Department, College of Medicine, Prince Sattam bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Bader A. Alhariqi
- Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
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Fascial Epicondylar Augmentation in Cases of Cubital Tunnel Syndrome With Ulnar Nerve Instability. Tech Hand Up Extrem Surg 2020; 25:197-200. [PMID: 33900059 DOI: 10.1097/bth.0000000000000332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Cubital tunnel syndrome (CubTS) is one of the most common compression-traction neuropathy in the upper extremity. The gold standard is simple in situ decompression with revision of potential compression sites through skin incision as small as rationally possible. Properly conducted conservative treatment is more effective in CubTS as opposed to carpal tunnel syndrome. At the same time, optimal management of CubTS remains controversial. Nevertheless, there is a subclass of patients with symptoms of CubTS that have ulnar nerve instability (UNI) with subluxation of the nerve over the medial epicondyle where conservative treatment would not be successful. UNI can be diagnosed by ultrasound preoperatively, but there are situations where the ulnar nerve becomes unstable with elbow flexion already on the operating table. Currently the most popular surgical reconstruction for clinically relevant UNI is anterior transposition of the nerve. With the proposed technique the nerve stays in orthotopic position, and the segmental vascularity is preserved, innervation to the flexor carpi ulnaris muscle is not jeopardized and ulnar nerve glide-floss exercises are possible as opposed to the standard subcutaneous transposition technique. No subfascial transposition, slings or blocking flaps are used for nerve stabilization which we consider contradiction to the surgery of nerve release.
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Kakita M, Mikami Y, Ibusuki T, Shimoe T, Kamijo YI, Hoekstra SP, Tajima F. The prevalence of ulnar neuropathy at the elbow and ulnar nerve dislocation in recreational wheelchair marathon athletes. PLoS One 2020; 15:e0243324. [PMID: 33315922 PMCID: PMC7735619 DOI: 10.1371/journal.pone.0243324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/18/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Ulnar neuropathy at the elbow is an entrapment neuropathy, while ulnar nerve dislocation might also be involved in its incidence and severity. Wheelchair marathon athletes may be at an increased risk for Ulnar Neuropathy. However, there is a paucity of research into the prevalence of Ulnar Neuropathy and ulnar nerve dislocation in this population. OBJECTIVE To investigate the prevalence of ulnar neuropathy at the elbow and ulnar nerve dislocation in wheelchair marathon athletes. PARTICIPANTS Wheelchair marathon athletes (N = 38) who participated in the 2017, 2018, and 2019 Oita International Wheelchair Marathon. 2 athletes participated only one time, 36 athletes repeatedly. Data from athletes`latest assessment were used. METHODS The day before the race, questionnaires, physical examinations, and ultrasonography were conducted to screen for Ulnar Neuropathy in both upper limbs. Ulnar nerve dislocation was confirmed by physical examination and ultrasonography. RESULTS 11 (29%) athletes were diagnosed with Ulnar Neuropathy. There were no significant differences in age, height, weight, Body Mass Index, or history of primary illness between athletes with and without Ulnar Neuropathy. In the group without Ulnar Neuropathy, 44% of athletes reported to have been engaging in other wheelchair sports, compared to 9% in the group with Ulnar Neuropathy (p = 0.037). Ulnar nerve dislocation was diagnosed in 15 (39%) athletes by ultrasonography. Out of the 14 elbows of 11 athletes diagnosed with Ulnar Neuropathy, 9 (64%) elbows had ulnar nerve dislocation. CONCLUSION The prevalence of Ulnar Neuropathy in wheelchair marathon athletes was higher than previously reported in able-bodied, non-athlete individuals and lower than in non-athletes with lower limb dysfunction. Therefore, while wheelchair sports may provide some protection against Ulnar Neuropathy, this study further supports the importance of screening for Ulnar Neuropathy, as well as for ulnar nerve dislocation as a potential risk factor for the development of Ulnar Neuropathy.
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Affiliation(s)
- Mari Kakita
- Department of Rehabilitation Medicine, Kansai Electric Power Hospital, Osaka-City, Osaka-Prefecture, Japan
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
| | - Yukio Mikami
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
| | - Tatsuru Ibusuki
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
| | - Takashi Shimoe
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
| | - Yoshi-ichiro Kamijo
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
| | - Sven P. Hoekstra
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
- The Peter Harrison Centre for Disability Sport, Loughborough University, Loughborough, United Kingdom
| | - Fumihiro Tajima
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama-City, Wakayama-Prefecture, Japan
- The Peter Harrison Centre for Disability Sport, Loughborough University, Loughborough, United Kingdom
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Ulnar nerve subluxation and dislocation: a review of the literature. Neurosurg Rev 2020; 44:793-798. [PMID: 32338326 DOI: 10.1007/s10143-020-01286-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/22/2020] [Accepted: 03/09/2020] [Indexed: 12/12/2022]
Abstract
The pathogenesis of ulnar nerve subluxation and dislocation is widely debated. Upon elbow flexion, the ulnar nerve slips out of the groove for the ulnar nerve, relocates medial or anterior to the medial epicondyle, and returns to its correct anatomical position upon extension. This chronic condition can cause neuritis or neuropathy; however, it has also been suggested that it protects against neuropathy by reducing tension along the nerve. This article reviews the extant literature with the aim of bringing knowledge of the topic into perspective and standardizing terminology.
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Draghi F, Bortolotto C, Ballerini D, Preda L. Ultrasonography of the ulnar nerve in the elbow: video article. J Ultrasound 2020; 23:335-336. [PMID: 32222947 DOI: 10.1007/s40477-020-00451-0] [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: 02/27/2020] [Accepted: 03/08/2020] [Indexed: 10/24/2022] Open
Abstract
Disorders affecting the ulnar nerve in the elbow are common in clinical practice. The diagnosis is based on clinical evaluation and electrodiagnostic tests, but imaging examinations are frequently necessary, particularly for the identification of the structures associated with nerve compression. The purpose of this video article is to review the anatomy, the pathology, scanning techniques, and sonographic appearance of the ulnar nerve in the elbow.
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Affiliation(s)
- Ferdinando Draghi
- Radiology Department, Istituto Di Radiologia, Fondazione IRCCS Policlinico San Matteo, Piazzale Golgi 2, 27100, Pavia, Italy
| | - Chandra Bortolotto
- Radiology Department, Istituto Di Radiologia, Fondazione IRCCS Policlinico San Matteo, Piazzale Golgi 2, 27100, Pavia, Italy.
| | - Daniela Ballerini
- Radiology Department, Istituto Di Radiologia, Fondazione IRCCS Policlinico San Matteo, Piazzale Golgi 2, 27100, Pavia, Italy
| | - Lorenzo Preda
- Radiology Department, Istituto Di Radiologia, Fondazione IRCCS Policlinico San Matteo, Piazzale Golgi 2, 27100, Pavia, Italy
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