Lumbrical Muscle Incursion into the Carpal Tunnel During Finger Flexion

1994 ◽  
Vol 19 (4) ◽  
pp. 434-438 ◽  
Author(s):  
T. K. COBB ◽  
K.-N. AN ◽  
W. P. COONEY ◽  
R. A. BERGER
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Work Place ◽  
Full Extension ◽  
Work Related ◽  
Finger Flexion ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle ◽  
Trauma Disorders ◽  
Possible Cause

Carpal tunnel syndrome is one of the many so-called cumulative trauma disorders thought by some to be related to the performance of repetitive tasks in the work-place. The cause of this disorder is unknown. We have observed lumbrical muscle incursion into the carpal tunnel during finger flexion. This study was conducted to determine the amount of this incursion in normal wrists. Five cadaver upper limbs were analyzed radiographically with radiopaque markers on the flexor retinaculum and the lumbrical muscle origins in four finger positions: full extension, 50% flexion, 75% flexion, and 100% finger flexion. The lumbrical muscle origins were an average of 7.8 mm distal to the carpal tunnel in full finger extension. They moved an average of 14 mm into the carpal tunnel with 50% finger flexion, 25.5 mm with 75% flexion, and 30 mm with 100% flexion. Abnormal lumbrical muscles have been cited as a possible cause of carpal tunnel syndrome. These findings suggest that lumbrical muscle incursion during finger flexion is a normal occurrence and is a possible cause of work-related carpal tunnel syndrome.

scholarly journals MÚSCULO LUMBRICAL COMO CAUSA DE SÍNDROME DEL TÚNEL CARPIANO. Lumbrical muscle within the carpal tunnel as a cause of carpal tunnel syndrome.

2017 ◽  
Vol 9 (1) ◽  
pp. 24-28
Author(s):  
Fernando Martinez
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Entrapment Neuropathy ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle ◽  
Possible Cause

El síndrome del túnel carpiano es la neuropatía por atrapamiento mas frecuente. La causa mas frecuente es el disbalance entre contenido y continente del canal carpiano. En este sentido, la presencia de músculos anormales o supernumerarios es una causa poco común pero conocida, de compresión del nervio mediano en el canal carpiano. Se presenta un caso de músculo lumbrical intracanal como posible causa de un síndrome del túnel carpiano.  Carpal tunnel syndrome is the most common entrapment neuropathy. The most frequent cause is the disbalance between content and continent of the carpal tunnel. In this sense, the presence of abnormal or supernumerary muscles is an uncommon but known cause of compression of the median nerve in the carpal canal. A case of intracanal lumbrical muscle is presented as a possible cause of a carpal tunnel syndrome.

UPAYA MEMPERTAHANKAN ERGONOMIK SERTA MENCEGAH HAZARD PSIKOSOSIAL

2020 ◽  
Author(s):  
Sera Manik
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Cumulative Trauma Disorders ◽  
Low Back ◽  
Cumulative Trauma ◽  
Tunnel Syndrome ◽  
Trauma Disorders

Ergonomi menjadi pilar kesehatan dan menjadi salah satu indikator kesejahteraan. perbaikan ergonomi perlu dilakukan sebagai salah satu upaya pencegahan terhadap penyakit CTDs (Cumulative Trauma Disorders) akibat faktor risiko kerja postur janggal, beban, frekuensi dan durasi yang bersumber dari pekerjaan, seperti nyeri tengkuk, nyeri pinggang bawah atau low back pain, rasa baal pada jari telunjuk, jari tengah dan jari manis yang disertai nyeri terbakar pada malam hari, kekakuan, lemah dan nyeri saat tangan digunakan dan dikenal dengan nama Carpal Tunnel Syndrome. Dalam ergonomi, postur tubuh adalah faktor yang sangat penting, salah satunya postur duduk yang setiap orang lakukan setiap hari dalam durasi berjam-jam. Tujuan utama membuat desain ergonomi untuk kursi atau tempat duduk dan meja adalah menciptakan sedemikian rupa bentuk kursi dan meja belajar, sehingga dapat mempertahankan postur tulang punggung yang fi siologis, dengan demikian diharapkan kerja otot tidak perlu berkontraksi secara berlebihan. Masalah ketidaksesuaian aspek ergonomi antara sarana kerja dan manusia serta pengaruhnya terhadap kesehatan belum mendapatkan perhatian yang serius di Indonesia. Hal ini terbukti dengan masih banyaknya tempat-tempat kerja yang belum berpedoman dengan kaidah ergonomi dalam hal penyediaan peralatan kerja bagi tenaga kerja. Ketepatan dimensi merupakan salah satu faktor penentu kenyamanan yang menunjang aspek fungsional dari suatu rancangan. Untuk menghasilkan suatu desain yang tepat dimensi perlu pertimbangan yang matang dan observasi yang cermat terkait dengan faktor manusia sebagai pengguna produk.

Surveillance of work-related carpal tunnel syndrome in Korea

2004 ◽  
Vol 16 (1) ◽  
pp. 37 ◽  
Author(s):  
Woo Chul Jeong ◽  
Ho Jang Kwon ◽  
Mina Ha ◽  
Sang Chul Roh ◽  
Beom Seon Kwon ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Work Related ◽  
Tunnel Syndrome

scholarly journals Prevalence and risk factors of self-reported wrist and hand symptoms and clinically confirmed carpal tunnel syndrome among office workers in China: a cross-sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Beibei Feng ◽  
Kedi Chen ◽  
Xiaoxia Zhu ◽  
Wing-Yuk Ip ◽  
Lars L. Andersen ◽  
...  
Keyword(s):  
Risk Factors ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Computer Use ◽  
Office Workers ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Work Related ◽  
Tunnel Syndrome ◽  
Hand Symptoms

Abstract Background Carpal tunnel syndrome (CTS) is a common cause of pain, numbness and tingling in the wrist and hand region and is associated with repetitive wrist and hand use in office workers. However, scarce knowledge exists about the epidemiology of clinically confirmed CTS among Chinese office workers. This study aimed to investigate the prevalence of wrist/hand symptoms and CTS in office workers in China and to identify associated risk factors. Methods A cross-sectional survey was carried out in a metropolitan city in China involving 969 respondents (aged 17–49 years) from 30 workplaces. A questionnaire was distributed to each participant to collect their demographic, work-related physical and psychosocial factors, and wrist and hand symptoms. The wrist and hand pain/numbness symptoms were marked on a body chart and the nature and intensity of symptoms, nocturnal symptoms, as well as aggravating activities were also recorded. Clinically confirmed CTS cases were screened based on the history, Phalen’s test, Tinel Sign and skin sensation testing among symptomatic respondents. Logistic regression was employed to estimate the odds ratio (OR) and 95% confidence interval (95% CI) for the occurrence of self-reported wrist and hand symptoms and clinically confirmed CTS. Results The clinically confirmed CTS prevalence was 9.6%. The prevalence of wrist and hand symptoms were 22 and 15%, respectively. Frequently working in pain was associated with higher odds of CTS. Multivariate modelling adjusted for age and gender showed that prolonged computer use time and working without breaks were associated with presence of wrist/hand symptoms (adjusted ORs: 1.11 (95% CI 1.02–1.22) and 1.88 (95% CI 1.12–3.14)). Educational level was inversely associated with CTS and smoking was associated with wrist/hand complaints (adjusted OR: 2.20 (95% CI 1.19–4.07)). Conclusions The prevalence of work-related clinically confirmed CTS symptoms among young office workers in China is high. Frequently working in pain is closely associated with clinically confirmed CTS. Intense computer use and no breaks at work are associated with wrist and hand symptoms.

scholarly journals First Lumbrical Muscle Flap for Recurrence of Carpal Tunnel Syndrome: Anatomical Study and Surgical Technique

2021 ◽  
Vol 49 (01) ◽  
pp. 079-087
Author(s):  
Esther Fernández Tormos ◽  
Fernando Corella Montoya ◽  
Blanca Del Campo Cereceda ◽  
Montserrat Ocampos Hernández ◽  
Teresa Vázquez Osorio ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Revision Surgery ◽  
Muscle Flap ◽  
Anatomical Study ◽  
Physical Barrier ◽  
Adjacent Structures ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle

AbstractRecurrence of carpal tunnel syndrome implies the reappearance of symptoms after release surgery. If the cause of recurrence is not an incomplete release, but a traction neuritis, the tendency is to add to the revision surgery of the carpal tunnel the use of flaps to cover the median nerve. These flaps establish a physical barrier between the nerve and the rest of the adjacent structures, preventing adhesions, and providing neovascularization and better nerve sliding.In the present work, we detail a revision surgery in which the first lumbrical muscle is used as a covering flap. This flap has two benefits. Firstly, it acts as a vascularized coverage for the median nerve (avoiding the formation of fibrosis and favoring its sliding); secondly, a structure that takes up space is removed from the carpal tunnel, thus reducing the pressure within it.Along with the explanation of the technique, the present article provides a detailed description of the anatomical variability of the first lumbrical muscle and its vascularization, as well as the results of a cadaveric study on the location of the vascular pedicle of the first lumbrical muscle.

Primary Carpal Tunnel Syndrome: How are We Managing it?

1988 ◽  
Vol 55 (5) ◽  
pp. 243-248
Author(s):  
Jane Bear-Lehman ◽  
Theresa Bielawski
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Occupational Therapy ◽  
Carpal Tunnel ◽  
Southern Ontario ◽  
Work Related ◽  
New Information ◽  
Therapeutic Evaluation ◽  
Different Types ◽  
Motor Problems ◽  
Tunnel Syndrome

For over 100 years, researchers have sought dependable methods to diagnose and remediate the aggravating symptoms produced in primary carpal tunnel syndrome (CTS). The focus of this study was to identify and to delineate the occupational therapy practice trends for primary CTS patients. A survey of all 80 occupational therapy departments in Southern Ontario was conducted in 1986. The respondents indicated that their current evaluation and intervention procedures addressed the motor problems related to CTS. Splinting for rest and/or work was their treatment of choice. This was alarming, as it appeared that new information from physiology and ergonomics is not being readily incorporated into occupational therapy practice. There was little therapeutic evaluation and intervention of the different types of primary CTS, the sensory problems produced in CTS, and the work-related needs of primary CTS patients.

Carpal Tunnel Syndrome Produced by an Organising Haematoma Within the Anomalous Second Lumbrical Muscle

HAND ◽  
1981 ◽  
Vol os-13 (1) ◽  
pp. 87-91 ◽  
Author(s):  
A. Nather ◽  
R. W. H. Pho
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Rare Case ◽  
Complete Relief ◽  
Anomalous Muscle ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle

A rare case of carpal tunnel syndrome due to an anomalous second lumbrical muscle passing through the carpal tunnel is described. Its presentation as an organising haematoma in the anomalous muscle due to trauma precipitating the syndrome has not been reported in the literature previously. The anomalous muscle with its contained haematoma was excised with complete relief of symptom.

Sign in / Sign up

Export Citation Format

Share Document