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.

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.

Carpal canal lipoma causing lameness in a dog

2011 ◽  
Vol 24 (04) ◽  
pp. 299-302 ◽  
Author(s):  
T. Ryan ◽  
H. W. Scott ◽  
D. Szabo
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Similar Condition ◽  
Entrapment Neuropathy ◽  
Surgical Removal ◽  
Tunnel Syndrome ◽  
Canal Syndrome ◽  
Carpal Canal Syndrome

SummaryCarpal canal syndrome, or carpal tunnel syndrome, is the most common entrapment neuropathy in humans and is caused by compression of the median nerve as it courses through the carpal canal. A similar condition has been reported in horses, however there have not been any reported cases of a dog showing lameness secondary to compression within the carpal canal. This report describes the case of a dog exhibiting lameness secondary to a lipoma within the carpal canal. Lameness improved after surgical removal of the mass. This case highlights the need to consider compression of the tendons and nerves in the carpal canal as a cause of forelimb lameness in dogs when pain is localised to the carpus.

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 Carpal Tunnel Syndrome with Wrist Trigger Caused by Hypertrophied Lumbrical Muscle and Tenosynovitis

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
Ayuko Shimizu ◽  
Masayoshi Ikeda ◽  
Yuka Kobayashi ◽  
Ikuo Saito ◽  
Joji Mochida
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Carpal Tunnel Release ◽  
Synovial Proliferation ◽  
Flexor Tendons ◽  
Active Flexion ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle ◽  
Open Carpal Tunnel Release

We present a case of carpal tunnel syndrome involving wrist trigger caused by a hypertrophied lumbrical muscle with flexor synovitis. The case was a 40-year-old male heavy manual worker complaining of numbness and pain in the median nerve area. On active flexion of the fingers, snapping was observed at the carpal area, and forceful full grip was impossible. Tinel’s sign was positive and an electromyographic study revealed conduction disturbance of the median nerve at the carpal tunnel. Magnetic resonance imaging revealed edematous lumbrical muscle with synovial proliferation around the flexor tendons. Open carpal tunnel release was performed under local anesthesia. Synovial proliferation of the flexor tendons was found and when flexing the index and middle fingers, the lumbrical muscle was drawn into the carpal tunnel with a triggering phenomenon. After releasing the carpal tunnel, the triggering phenomenon and painful numbness improved.

Entrapment Neuropathy of the Palmar Cutaneous Branch of the Median Nerve Concomitant with Carpal Tunnel Syndrome: A Case Report

2002 ◽  
Vol 27 (6) ◽  
pp. 583-585 ◽  
Author(s):  
T. WADA ◽  
T. IMAI ◽  
S. ISHII
Keyword(s):  
Case Report ◽  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Nerve Conduction Studies ◽  
Entrapment Neuropathy ◽  
Palmar Cutaneous Branch ◽  
Cutaneous Branch ◽  
Tunnel Syndrome ◽  
Monofilament Test

A case of the entrapment neuropathy of the palmar cutaneous branch of the median nerve, concomitant with carpal tunnel syndrome is presented. This report demonstrates that the Semmes–Weinstein monofilament test and nerve conduction studies can identify entrapment of the palmar cutaneous branch of the median nerve concomitant with carpal tunnel syndrome.

scholarly journals Rare median nerve anatomy – possible cause for carpal tunnel syndrome?

2021 ◽  
Vol 23 (1) ◽  
pp. 121
Author(s):  
Michaela Plaikner ◽  
Alexander Loizides ◽  
Elisabeth Skalla-Oberherber ◽  
Hannes Gruber
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Tunnel Syndrome ◽  
Possible Cause

.

Mini-Open Carpal Tunnel Decompression

Neurosurgery ◽  
2004 ◽  
Vol 54 (2) ◽  
pp. 397-400 ◽  
Author(s):  
Jason H. Huang ◽  
Eric L. Zager
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Entrapment Neuropathy ◽  
Transverse Carpal Ligament ◽  
Motor Branch ◽  
Tunnel Technique ◽  
Tunnel Syndrome ◽  
Mini Open ◽  
Surgical Release

Abstract CARPAL TUNNEL SYNDROME is the most common entrapment neuropathy, and it is caused by compression of the median nerve at the wrist. The authors describe the mini-open carpal tunnel technique for surgical release of the transverse carpal ligament. The success of the procedure depends on meticulous technique with attention to certain important anatomic details and careful avoidance of injury to the palmar cutaneous nerve and the recurrent motor branch.

Changes in the carpal tunnel while wearing the Manu® soft hand brace: a sonographic study

2012 ◽  
Vol 38 (1) ◽  
pp. 57-60 ◽  
Author(s):  
G. Manente ◽  
D. Melchionda ◽  
T. Staniscia ◽  
C. D’Archivio ◽  
V. Mazzone ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Middle Finger ◽  
Controlled Study ◽  
Transverse Diameter ◽  
Tunnel Syndrome ◽  
Lumbrical Muscle ◽  
Bilateral Carpal Tunnel Syndrome ◽  
Wrist Splint

We studied the effect of the Manu® soft hand brace, which has been designed to relieve median nerve entrapment in carpal tunnel syndrome. An observational, controlled study was conducted in 10 participants, five with bilateral carpal tunnel syndrome and five controls, using sonography to study changes in the dimensions of the carpal tunnel before and while wearing the brace. An increase in transverse diameter, thinning of the flexor retinaculum, and displacement of the proximal insertion of the lumbrical muscle to the middle finger from the edge of the carpal tunnel were observed in patients while wearing the brace. The changes in the morphology of the carpal tunnel while wearing the Manu® support its use as an alternative to a night wrist splint.

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