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Li ZM, Jordan DB. Carpal tunnel mechanics and its relevance to carpal tunnel syndrome. Hum Mov Sci 2023; 87:103044. [PMID: 36442295 PMCID: PMC9839559 DOI: 10.1016/j.humov.2022.103044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
The carpal tunnel is an elaborate biomechanical structure whose pathomechanics plays an essential role in the development of carpal tunnel syndrome. The purpose of this article is to review the movement related biomechanics of the carpal tunnel together with its anatomical and morphological features, and to describe the pathomechanics and pathophysiology associated with carpal tunnel syndrome. Topics of discussion include biomechanics of the median nerve, flexor tendons, subsynovial tissue, transverse carpal ligament, carpal tunnel pressure, and morphological properties, as well as mechanisms for biomechanical improvement and physiological restoration. It is our hope that the biomechanical knowledge of the carpal tunnel will improve the understanding and management of carpal tunnel syndrome.
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Gabríková K, Kachlík D, Belbl M, Kunc V. An accessory muscle belly or an accessory muscle head? An unusual arrangement of muscles in the anterior compartment of the forearm. Surg Radiol Anat 2023; 45:271-275. [PMID: 36695889 PMCID: PMC9981488 DOI: 10.1007/s00276-023-03084-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023]
Abstract
PURPOSE Knowledge of the unusual arrangement of the flexor pollicis longus (FPL) muscle is important as the variable tendon may be a rare cause of carpal tunnel syndrome. METHODS During a routine dissection at the Department of Anatomy, an unusual formation of the FPL muscle was observed in a formalin embalmed Central European cadaver. RESULTS This report presents a variation of the FPL muscle, where the muscle split and formed a separate accessory head inserting into the first lumbrical muscle. Moreover, a tendinous interconnection was present between the FPL muscle tendon and the tendon of the aberrant muscle head. CONCLUSION The cases described by previous literature, concerning the Linburg-Comstock variation or the accessory head of the first lumbrical muscle originating from the FPL muscle, are closest to the present case. Such variation has a clinical significance ranging from the functional limitation of the thumb and index finger movement to the potential median nerve compression.
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Ohara M, Sanjo N, Kanouchi T, Yokota T. Entrapment partly participates in the longitudinal progression of neuropathy with anti-MAG antibodies. Rev Neurol (Paris) 2023; 179:118-122. [PMID: 36371264 DOI: 10.1016/j.neurol.2022.07.009] [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: 05/11/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 11/11/2022]
Abstract
Neuropathy with anti-myelin-associated glycoprotein (MAG) antibodies commonly demonstrates distal-dominant prolongation of nerve conduction. However, recent electrophysiological studies have shown that distal motor demyelination is not always a distinct feature. We aimed to elucidate whether the longitudinal progression of nerve impairment occurs in a distal-dominant manner. Seven patients with neuropathy with anti-MAG antibodies were enrolled. Sequential nerve conduction studies revealed nerve conduction reduction only at the wrist segment in the median nerve of the patients, but not in the ulnar nerve. Median nerve entrapment at the wrist may play a role in longitudinal disease progression in neuropathy with anti-MAG antibodies.
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Hawk JL, Daulat SR, Margolis DS, Li ZM. Dose- and time-dependent effects of collagenase clostridium histolyticum injection on transverse carpal ligament elastic modulus and thickness in vitro. PLoS One 2022; 17:e0277187. [PMID: 36454942 PMCID: PMC9714872 DOI: 10.1371/journal.pone.0277187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 10/21/2022] [Indexed: 12/03/2022] Open
Abstract
A potential treatment for carpal tunnel syndrome is to biochemically alter the mechanical properties of the transverse carpal ligament (TCL) through Collagenase Clostridium Histolyticum (CCH) injection. The purpose of this study was to determine the time- and dose-dependent effects of CCH injection on TCL elastic modulus and thickness. Nine TCLs were dissected from cadaveric hands for this study. CCH doses of 50U, 100U, 150U, 200U, and 250U were injected into five points on the TCL, respectively. B-mode and shear wave elastography images were taken of each injection point using robot-assisted ultrasound imaging immediately after injection, as well as 2, 4, 6, 8, and 24 hours after injection. TCL thickness and mean shear wave speed were measured for each CCH dose at each time point. CCH doses of 200U and 250U decreased shear wave speed by 18.70% and 30.01% (p<0.05), respectively, after 24 hours. CCH doses of 150U, 200U, and 250U decreased TCL thickness by 7.28%, 10.97%, and 14.92%, respectively, after 24 hours (p<0.05). Our findings suggest that CCH injection may be effective in degrading TCL tissue, with higher doses of CCH resulting in greater tissue degradation up to 24 hours after injection.
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Akcay S, Koskderelioglu A, Ince B, Elif Saka F, Eskut N, Goksel Karatepe A. Is the left/right judgment task performance altered in unilateral carpal tunnel syndrome: And associated with symptom severity? Musculoskelet Sci Pract 2022; 62:102641. [PMID: 35961062 DOI: 10.1016/j.msksp.2022.102641] [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: 04/29/2022] [Revised: 07/11/2022] [Accepted: 07/29/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Left/right judgment task performance (LRJT) is impaired in severe neuropathic pain conditions. However, comparison of LRJT performance in patients with carpal tunnel syndrome (CTS) with a control group with similar cognitive functions has not been investigated. OBJECTIVE The aim of the study was to compare the LRJT performance of CTS patients with healthy controls and the unaffected side. METHODS Seventy-five CTS patients with dominant, right-hand involvement and 75 control subjects were included in the study. The Recognize® tablet application was used for LRJT performance. Tactile acuity (Two-point discrimination) and handgrip strength; pain severity (Visual Analog Scale) and neuropathic component of pain (Pain Detect Questionnaire); symptom severity and functional impact of CTS (Boston CTS Assessment Test) were evaluated. Mixed-design ANOVAs and correlation analyses were used for data analysis. DESIGN Cross-sectional study. RESULTS Analysis of variance showed that there was no significant effect of side (affected versus unaffected) or group (CTS versus control group) on recognition accuracy or time. Significant group*site interactions were found for the two-point discrimination F (1,148) = 6.388, p = 0.013; and for handgrip strength F (1,148) = 17.552, p < 0.01. A statistically significant negative correlation was found between recognition accuracy and symptom duration and a significant positive correlation was found between recognition accuracy and handgrip strength in CTS patients (r = -0.267, p = 0.020; r = 0.290, p = 0.012). CONCLUSION CTS patients recognize the affected side as accurately and quickly as the unaffected side and control group. Further research is needed to clarify the relationship between LRJT performance in the severely affected CTS group. GOV REGISTRATION NUMBER NCT04967144 CLINICALTRIALS. GOV REGISTRATION DATE 19 July 2021.
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Kuroiwa T, Jagtap J, Starlinger J, Lui H, Akkus Z, Erickson B, Amadio P. Deep Learning Estimation of Median Nerve Volume Using Ultrasound Imaging in a Human Cadaver Model. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:2237-2248. [PMID: 35961866 DOI: 10.1016/j.ultrasmedbio.2022.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Median nerve swelling is one of the features of carpal tunnel syndrome (CTS), and ultrasound measurement of maximum median nerve cross-sectional area is commonly used to diagnose CTS. We hypothesized that volume might be a more sensitive measure than cross-sectional area for CTS diagnosis. We therefore assessed the accuracy and reliability of 3-D volume measurements of the median nerve in human cadavers, comparing direct measurements with ultrasound images interpreted using deep learning algorithms. Ultrasound images of a 10-cm segment of the median nerve were used to train the U-Net model, which achieved an average volume similarity of 0.89 and area under the curve of 0.90 from the threefold cross-validation. Correlation coefficients were calculated using the areas measured by each method. The intraclass correlation coefficient was 0.86. Pearson's correlation coefficient R between the estimated volume from the manually measured cross-sectional area and the estimated volume of deep learning was 0.85. In this study using deep learning to segment the median nerve longitudinally, estimated volume had high reliability. We plan to assess its clinical usefulness in future clinical studies. The volume of the median nerve may provide useful additional information on disease severity, beyond maximum cross-sectional area.
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Shinohara I, Inui A, Mifune Y, Nishimoto H, Yamaura K, Mukohara S, Yoshikawa T, Kato T, Furukawa T, Hoshino Y, Matsushita T, Kuroda R. Using deep learning for ultrasound images to diagnose carpal tunnel syndrome with high accuracy. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:2052-2059. [PMID: 35868907 DOI: 10.1016/j.ultrasmedbio.2022.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 05/08/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
Recently, deep learning (DL) algorithms have been adapted for the diagnosis of medical images. The purpose of this study was to detect image features using DL without measuring median nerve cross-sectional area (CSA) in ultrasonography (US) images of carpal tunnel syndrome (CTS) and calculate the diagnostic accuracy from the confusion matrix obtained. US images of 50 hands without CTS and 50 hands diagnosed with CTS were used in this study. The short-axis image of the median nerve was visualized, and 5000 images of both groups were prepared. Forty hands in each group were used as training data for the DL algorithm, while the remainder were used as test data. Transfer learning was performed using three pre-trained models. The confusion matrix and receiver operating characteristic curves were used to evaluate diagnostic accuracy. Furthermore, regions where DL was determined to be important were visualized. The highest score had an accuracy of 0.96, precision of 0.99 and recall of 0.94. Visualization of the important features revealed that the DL models focused on the epineurium of the median nerve and the surrounding soft tissue. The proposed technique enables the accurate prediction of CTS without measurement of the CSA.
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Pan L, Chen JQ, Chen MC, Zhu HY, Wu ZQ, Zhang ZF. [Case-control study on carpal canal endoscopy and arthroscopy for the treatment of plantar fasciopathy]. ZHONGGUO GU SHANG = CHINA JOURNAL OF ORTHOPAEDICS AND TRAUMATOLOGY 2022; 35:538-542. [PMID: 35730223 DOI: 10.12200/j.issn.1003-0034.2022.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To explore clinical effects of carpal canal endoscopy in treating patients with plantar fasciopathy who failed by conservative treatment. METHODS From August 2018 to August 2019, 50 patients with plantar fascia were divided into two groups and 25 patients in each group. In carpal canal endoscopy group, included 11 males and 14 females, aged from 39 to 67 years old with an average of(57.7±6.4) years old;carpal canal endoscopy was used to plantar fascia release. In arthroscopy group, included 9 males and 16 females, aged from 41 to 73 years old with an average of (58.1±7.2) years old;conventional 4.0 mm arthroscopy Instruments was used to plantar fascia release. Operation time, hospitalization expense and postoperative complications between two groups were observed and compared. Postoperative visual analogue scale(VAS) and American Orthopedic Foot Ankle Society (AOFAS) score were used to evaluate clinical function. RESULTS All patients were followed up from 12 to 18 months with an average of (14.3±2.1) months. There were significant differentces in operation time and hospitalization expense between two groups (P<0.05). Surgical incision healed well in carpal canal endoscopy group, and 2 patients delayed union in arthroscopy group, and no difference between two groups (P>0.05). There were no statistical differences in VAS, AOFAS and grading between two groups at 12 months after operation(P>0.05). CONCLUSION The outcome of carpal canal endoscopy and arthroscopy has similar effects in treating plantar fascia. While carpal canal endoscopy has advantages of need not perfusion during opertaion, protect soft tissue well, less operation time, and lower cost.
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Yerasu MR, Ali M, Rao R, Murthy JMK. Bifid median nerve: a notable anomaly in carpal tunnel syndrome. BMJ Case Rep 2022; 15:e249220. [PMID: 35580937 PMCID: PMC9114938 DOI: 10.1136/bcr-2022-249220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2022] [Indexed: 11/03/2022] Open
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Kwak D, Park JW, Won Y, Kwon Y, Lee JI. Quality and reliability evaluation of online videos on carpal tunnel syndrome: a YouTube video-based study. BMJ Open 2022; 12:e059239. [PMID: 35428646 PMCID: PMC9014065 DOI: 10.1136/bmjopen-2021-059239] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES With the increasing popularity of searches for medical information on YouTube, the availability of videos concerning carpal tunnel syndrome (CTS) is increasing. This study aimed to evaluate the quality and reliability of YouTube videos on CTS. SETTING AND PARTICIPANTS No participants were included. PRIMARY AND SECONDARY OUTCOME MEASURES We searched YouTube on 1 April 2021 using the keywords "carpal tunnel syndrome" and "carpal tunnel release" and evaluated the first 55 retrieved videos. We summarised the video characteristics including Video Power Index (VPI), which was designed to evaluate video popularity based on the number of likes and views. We categorised them based on source and content. Video quality and reliability were evaluated using the Journal of the American Medical Association (JAMA) benchmark criteria, the Global Quality Score (GQS) and the Carpal Tunnel Syndrome-Specific Score (CTS-ss) . RESULTS The mean (range: minimum-maximum) of JAMA scores, GQS and CTS-ss were 2.13 (1-4), 2.69 (1-5), and 5.0 (1-15), respectively. The most common source of video was from allied health workers, and academically sourced videos had the highest JAMA score and GQS. Three scores were significantly correlated with each other. Multiple linear regression analysis showed that a higher JAMA score was associated with a higher likes ratio, and a higher GQS was associated with a longer video running time and greater number of comments. However, a higher VPI was not associated with higher video quality or reliability represented by the three scores. CONCLUSIONS YouTube videos on CTS have low quality and reliability. Video popularity was not significantly correlated with quality or reliability. Our findings suggest that expert groups should provide and promote high-quality video content to YouTube users and patients.
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Anderson DA, Agur AM, Oliver ML, Gordon KD. Effects of slight flexion-extension and radial-ulnar deviation postures on carpal tunnel volume. Clin Biomech (Bristol, Avon) 2022; 92:105575. [PMID: 35051839 DOI: 10.1016/j.clinbiomech.2022.105575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 01/05/2022] [Accepted: 01/09/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Non-neutral wrist postures are a commonly reported risk factor for carpal tunnel syndrome. It is unclear how slight flexion-extension and radial-ulnar deviation postures affect the carpal tunnel. The objective was to determine the effects of slight non-neutral postures by quantifying carpal tunnel volume. METHODS Computed tomography images were collected on ten cadaveric specimens in target postures of -20°, -10°, -5°, 0°, 5°, 10°, and 20° of flexion and - 10°, -5°, 0°, 5°, and 10° of radial-ulnar deviation. Surface meshes of the carpal tunnel, carpal bones, radius, and third metacarpal were generated with manual segmentation. Carpal tunnel volume was calculated as the volume between proximal and distal boundaries defined with anatomical landmarks and the orientation of the tunnel. The precise wrist posture of each scan was determined with inertial-based coordinate systems of the radius and third metacarpal. FINDINGS Through multiple linear regression it was determined that, over the observed range of postures, flexion-extension angle does not have a significant effect (p = 0.99) while radial-ulnar deviation angle has a significant effect of -5.9 mm3/degree (p = 0.003). The findings were consistent with previous studies of postural effects on carpal tunnel pressure. INTERPRETATION For the treatment and prevention of carpal tunnel syndrome, results suggest that attention should be given to slight radial-ulnar deviation postures (<10°), while slight flexion-extension postures (<20°) are of lesser consequence to carpal tunnel volume.
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Gupta P, Jain V. Leprosy Mimicking Carpal Tunnel Syndrome in a Child on Growth Hormone Therapy. Indian Pediatr 2022; 59:89-90. [PMID: 35060488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
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Lei L, Yin S, Meng F, Zhou Y, Xu X, Ao LJ, Xu R, Chen MX. The top 50 most cited articles in carpal tunnel syndrome research: A bibliometrics study. Medicine (Baltimore) 2022; 101:e28012. [PMID: 35029871 PMCID: PMC8735813 DOI: 10.1097/md.0000000000028012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 11/11/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Citation analysis was applied to identify the influential studies in the specific field. More and more literature related to carpal tunnel syndrome (CTS) have been published in recent years. To our knowledge, no one has performed a citation analysis of CTS. Thus, our study identified the top 50 influential articles pertaining to CTS and conduct an analysis of their characteristics. METHODS The Web of Science database was used to identify all the articles from 1900 to 2020. We obtained the top 50 articles ranked by citation times, and articles were included and excluded based on the relevance to CTS. Also, we collected the information about journal name, level of evidence, source country and institution, and research type for further analysis. RESULTS The top 50 articles were published between 1959 and 2012. The number of citations ranged from 151 to 1083. The citation density was between 3.23 and 40.27 per year. Muscle Nerve published most articles in CTS research, followed by Journal of Bone and Joint Surgery American Volume. The USA was the leading country, and all the top 5 institutions were from the USA. Katz JN with the highest h-index published most articles. Level III was the most common evidence level. CONCLUSIONS We identified the top 50 cited articles related to CTS. These influential articles might provide researchers with a comprehensive list of the major contribution related to CTS research.
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Steurer J. [Not Available]. PRAXIS 2022; 111:483-484. [PMID: 35673839 DOI: 10.1024/1661-8157/a003866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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Yao B, Roll SC. An ultrasound study of the mobility of the median nerve during composite finger movement in the healthy young wrist. Muscle Nerve 2022; 65:82-88. [PMID: 34648193 PMCID: PMC8671362 DOI: 10.1002/mus.27437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 10/06/2021] [Accepted: 10/09/2021] [Indexed: 01/03/2023]
Abstract
INTRODUCTION/AIMS There is a lack of consensus regarding median nerve movement in the carpal tunnel during composite finger flexion in healthy individuals. In this study we examined the amount and direction of median nerve movement and differentiate nerve mobility between dominant and nondominant sides in a large, healthy, young adult cohort. METHODS Sonographic videos of the median nerve during composite finger motion from extension to full flexion were analyzed in 197 participants without median nerve pathology. Displacement of the nerve's centroid was calculated based on a change in the relative location of the nerve. Longitudinal nerve sliding was categorized as none, independently from the tendons, or with the tendons. RESULTS In short axis, median nerves moved within 1 mm vertically and 3 mm horizontally; no direction was predominant. About half of the nerves (52.5%) slid independently while 26.9% slid with the tendons; 21.3% did not slide at all. On the nondominant side, median nerves that slid with the tendons had a larger absolute vertical displacement than nerves that slid independently or did not slide at all (P < .01). Nerves on the dominant side moved in a radial direction more frequently than on the nondominant side (P = .02). DISCUSSION Transverse nerve movement during composite finger flexion in healthy individuals varies widely with no clear pattern in the direction of transverse movement or amount of longitudinal sliding. These data provide a foundation for future research to better understand the biomechanical contribution of nerve movement to median nerve pathologies.
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Draghici M, Jercan A, Badelita SN, Irimia RM, Bastian AE, Dobrea C, Popescu M, Coriu D. Muscle involvement with pseudohypertrophy in systemic light chain amyloidosis: Case report. Medicine (Baltimore) 2021; 100:e28267. [PMID: 34941106 PMCID: PMC8702120 DOI: 10.1097/md.0000000000028267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 11/25/2021] [Indexed: 01/05/2023] Open
Abstract
RATIONALE Muscle pseudohypertrophy is a rare manifestation of light chain amyloidosis (AL) amyloidosis. PATIENT CONCERNS A 63-year-old woman presented with a 2-year history of progressive asthenia, macroglossia, dysphonia, cachexia, hypotension, paresthesia, and lower limb muscle hypertrophy. DIAGNOSIS Free serum lambda light chains were increased, and fat pad biopsy demonstrated Congo red-positive deposits. Additionally, electromyography showed a myopathic pattern, whereas muscle biopsy revealed amyloid deposits. A diagnosis of λAL with cardiac, renal, nervous system, and skeletal muscle involvement was established. INTERVENTIONS AND OUTCOMES The patient received 3 subsequent lines of therapy over the following 23 months, with very slow hematological remission followed by resolution of organ dysfunction. LESSONS Despite its rarity, muscle involvement should be considered in patients diagnosed with AL amyloidosis associated with unexplained muscle hypertrophy or weakness associated with macroglossia or elevated troponin T levels in the absence of clear cardiac involvement.
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Zamfir G, Chattun H, Alam Z, Coebergh J, Saifuddin A. A 38-year-old man presenting with a >1-month history of increased sensitivity to touch in the right index finger, thumb and middle finger with a positive Tinel's sign over the median nerve. Skeletal Radiol 2021; 50:2289-2291. [PMID: 33860846 DOI: 10.1007/s00256-021-03785-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/01/2021] [Accepted: 04/08/2021] [Indexed: 02/02/2023]
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Goyal R, Mercado AE, Ring D, Crijns TJ. Most YouTube Videos About Carpal Tunnel Syndrome Have the Potential to Reinforce Misconceptions. Clin Orthop Relat Res 2021; 479:2296-2302. [PMID: 33847604 PMCID: PMC8445577 DOI: 10.1097/corr.0000000000001773] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/12/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Studies of online health information have addressed completeness and adherence to evidence, which can be difficult because current evidence leaves room for debate about etiology, diagnosis, and treatment. Fewer studies have evaluated whether online health information can reinforce misconceptions. It can be argued that information with the potential to harm health by reinforcing unhelpful misconceptions ought to be held to a higher standard of evidence. QUESTIONS/PURPOSES (1) What is the prevalence and nature of health information in YouTube videos with the potential to reinforce common misconceptions about symptoms and treatment associated with carpal tunnel syndrome (CTS)? (2) What factors (such as the number of views, likes, and subscribers) are associated with Potential Reinforcement of Misconception scores of YouTube videos about CTS? METHODS After removing all personalized data, we searched for the term "carpal tunnel syndrome" on YouTube, reviewed the first 60 English-language videos that discussed the diagnosis and treatment of CTS, and collected available metrics. The primary outcome was the number of statements that could reinforce misconceptions about CTS, rated by two authors using a checklist. As a secondary outcome, we counted the number of statements that could help patients by reorienting or balancing common misconceptions, providing agency, and facilitating decisions, and we subtracted the number of potential misconceptions from this count. A modified version of the DISCERN instrument (a validated scoring system designed to gauge the quality and reliability of health information) was used to evaluate each video. We sought factors associated with the Potential Reinforcement of Misconception score-in both the negative-only and combined (positive and negative) variations-accounting for various YouTube metrics (such as the number of views, number of likes and dislikes, and duration) and the modified DISCERN score. The interrater reliability was excellent for both the Potential Reinforcement of Misconceptions checklist (ICC = 0.97; Pearson correlation [r] = 0.97) and DISCERN information quality score (ICC = 0.96; r = 0.97). RESULTS Seventy-eight percent of the YouTube videos (47 of 60 videos) contained at least one statement that could reinforce common misconceptions about CTS. The median number of potentially misconception-reinforcing statements was two (range one to three), with the most common statements being that CTS is caused by hand use (38%; 23 of 60 videos) and that splints can alter the natural history of the disease (37%; 22 videos). Videos that were more popular (higher number of views or likes) did not contain less potential reinforcement of misconceptions. In the multivariable analysis, we found a strong association between the DISCERN score and the CTS Potential Reinforcement of Misconceptions score (regression coefficient = 0.67; 95% CI 0.22-1.2; partial r2 = 0.13; p = 0.004) and a lower number of subscribers (calculated per one million subscribers: regression coefficient = -0.91; 95% CI -1.8 to -0.023; p = 0.045). CONCLUSION Potential reinforcement of misconceptions is prevalent in YouTube videos about CTS, more so in videos with lower information quality scores. CLINICAL RELEVANCE Online health information should be held to a standard of accuracy (alignment with best evidence), and where such evidence leaves room for debate, it should be held to a standard by which unhealthy misconceptions are not reinforced.
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Sadr AH, Misky AT, Akhavani MA. What happens if you ignore carpal tunnel syndrome? QJM 2021; 114:331-332. [PMID: 32761192 DOI: 10.1093/qjmed/hcaa235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Indexed: 11/12/2022] Open
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Locher H. [Manual medicine, manual treatment : Principles, mode of action, indications and evidence]. Unfallchirurg 2021; 124:433-445. [PMID: 34009423 PMCID: PMC8159844 DOI: 10.1007/s00113-021-01004-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2021] [Indexed: 12/19/2022]
Abstract
Manual medicine is the medical discipline that comprehensively deals with the diagnosis, treatment and prevention of reversible functional disorders of the musculoskeletal system and other related organ systems. The article illustrates the neuroanatomical and neurophysiological basic elements and mechanisms of manual medical diagnostics and treatment. Based on the most recent literature and in consideration of various scientific guidelines, the evidence-based effectiveness of manual medical procedures is presented. In detail: acute and chronic low back pain, cervicogenic headache, neck and shoulder pain, radicular arm pain, dysfunctional thoracic pain syndromes, diseases of the rotator cuff, carpal tunnel syndrome and plantar fasciitis. Clinical case examples illustrate the clinical approach. The terminology, origin and clinical presence of "osteopathy" are described in detail and the national and international associations and societies of manual medicine, the German Society for Manual Medicine (DGMM), the European Scientific Society of Manual Medicine (ESSOMM) and the Fédération Internationale de Medicine Manuelle (FIMM) are lexically presented. Finally, contraindications for manual interventions and an outlook on requirements and possibilities of the scientific analysis of pain are presented, as they are postulated in the preamble of the guidelines on specific low back pain of the German Society for Orthopedics and Orthopedic Surgery (DGOOC).
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Chang KV, Wu WT, Yang YC, Özçakar L. Ultrasound imaging and guided hydro-dissection for injury of the recurrent motor branch of the median nerve. MEDICAL ULTRASONOGRAPHY 2021; 23:239-240. [PMID: 34015071 DOI: 10.11152/mu-3183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
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Mendoza-Pulido C, Ortiz-Corredor F. Measurement properties of the Boston Carpal Tunnel Questionnaire in subjects with neurophysiological confirmation of carpal tunnel syndrome: a Rasch analysis perspective. Qual Life Res 2021; 30:2697-2710. [PMID: 33961186 DOI: 10.1007/s11136-021-02860-y] [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] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE To perform a comprehensive psychometric analysis of the Boston Carpal Tunnel Syndrome Questionnaire (BCTQ) by means of factor and Rasch analyses in subjects with neurophysiologic confirmation of carpal tunnel syndrome (CTS). Relationship between clinical severity assessed with the log-linear version of the BCTQ and neurophysiologic severity assessed with nerve conduction studies was further examined. METHODS Five hundred and twenty-eight individuals completed the questionnaire. Confirmatory and exploratory factor analyses were used to determine the latent structure of the BCTQ. Through Rasch methodology, a log-linear version was proposed given the latent structure of the questionnaire. Linear relationship between the proposed questionnaire and neurophysiologic findings was established. RESULTS The BCTQ underlying structure comprises, at least, three factors that may be represented by Functionality, Paresthesia and Pain domains. Two log-linear subscales may be proposed: subscale 1 comprised of the Functionality factor and subscale 2 which incorporates the Paresthesia and Pain factors under a bifactor solution. Neurophysiologic and clinical severity classification system displays a very weak linear correlation. CONCLUSION A log-linear version of the BCTQ, useful as an outcome tool in clinical and trial settings, is proposed. Neurophysiological data lack the ability to resemble changes in clinical status of individuals with CTS.
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Matesanz L, Hausheer AC, Baskozos G, Bennett DL, Schmid AB. Somatosensory and psychological phenotypes associated with neuropathic pain in entrapment neuropathy. Pain 2021; 162:1211-1220. [PMID: 33044393 PMCID: PMC7977619 DOI: 10.1097/j.pain.0000000000002102] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/23/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022]
Abstract
ABSTRACT It currently remains unclear why some patients with entrapment neuropathies develop neuropathic pain (neuP), whereas others have non-neuP, presumably of nociceptive character. Studying patients with carpal tunnel syndrome (CTS), this cross-sectional cohort study investigated changes in somatosensory structure and function as well as emotional well-being specific to the presence and severity of neuP. Patients with CTS (n = 108) were subgrouped by the DN4 questionnaire into those without and with neuP. The latter group was further subdivided into mild and moderate/severe neuP using a pain visual analogue scale. N = 32 participants served as healthy controls. All participants underwent a clinical examination, quantitative sensory testing, electrodiagnostic testing (EDT), and skin biopsy to determine the structural integrity of dermal and intraepidermal nerve fibres. Patients also completed questionnaires evaluating symptom severity and functional deficits, pain distribution, sleep quality, and emotional well-being. The overall prevalence of neuP in patients with CTS was 80%, of which 63% had mild neuP. Symptom severity and functional deficits as well as somatosensory dysfunction was more pronounced with the presence and increasing severity of neuP. No difference was identified among patient groups for EDT and nerve fibre integrity on biopsies. The severity of neuP was accompanied by more pronounced deficits in emotional well-being and sleep quality. Intriguingly, extraterritorial spread of symptoms was more prevalent in patients with moderate/severe neuP, indicating the presence of central mechanisms. NeuP is common in patients with CTS, and its severity is related to the extent of somatosensory dysfunction and a compromise of emotional well-being.
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Goller SS, Hesse N, Dürr HR, Ricke J, Schmitt R. Hydroxyapatite deposition disease of the wrist with intraosseous migration to the lunate bone. Skeletal Radiol 2021; 50:1909-1913. [PMID: 33712879 PMCID: PMC8277614 DOI: 10.1007/s00256-021-03758-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/07/2021] [Accepted: 03/07/2021] [Indexed: 02/02/2023]
Abstract
Hydroxyapatite deposition disease (HADD) is a mostly uniarticular, self-limiting condition caused by deposition of hydroxyapatite (HA) crystals in tendons or in the peritendinous soft tissues. Commonly, the glenohumeral joint is affected. More rarely, the HA depot can be cause of a carpal tunnel syndrome due to an acute inflammatory reaction and space-occupying soft tissue oedema. We report a case of acute HA depot located at the volar site of the right wrist with affection of the deep flexor tendons and intraosseous migration into the lunate bone in a 50-year-old female. There are two main goals of this case report: First, to remind the diagnosis of HADD as a cause of wrist pain and also of carpal tunnel syndrome, as this entity being often misdiagnosed clinically, and second, to report a rare case of intraosseous migration of HA crystals into the lunate bone.
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Rahmani G, Sugrue R, Bergin D, Kelly JL. The median nerve roll - A simple way to locate the median nerve at the wrist. HAND SURGERY & REHABILITATION 2020; 40:207. [PMID: 33285304 DOI: 10.1016/j.hansur.2020.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/24/2020] [Accepted: 11/28/2020] [Indexed: 11/17/2022]
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