The palmaris longus muscle and its relations with the antebrachial fascia and the palmar aponeurosis

2009 ◽  
Vol 22 (2) ◽  
pp. 221-229 ◽  
Author(s):  
Carla Stecco ◽  
Luca Lancerotto ◽  
Andrea Porzionato ◽  
Veronica Macchi ◽  
Cesare Tiengo ◽  
...  
Keyword(s):  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
Palmar Aponeurosis ◽  
Antebrachial Fascia

scholarly journals A RARE CASE OF BILATERAL FLEXOR CARPI ULNARIS VARIATION: ANATOMICAL AND CLINICAL CONSIDERATIONS AND LITERATURE REVIEW. Un caso raro de variación bilateral del músculo flexor carpi ulnaris-significado anatómico y clínico y revisión literaria

2016 ◽  
Vol 8 (2) ◽  
pp. 98-103
Author(s):  
Alexandar Iliev ◽  
Georgi P. Georgiev ◽  
Boycho Landzhov
Keyword(s):  
Median Nerve ◽  
Ulnar Artery ◽  
Lateral Side ◽  
Neurovascular Compression ◽  
Palmaris Longus ◽  
Bilateral Absence ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
Flexor Carpi Ulnaris ◽  
Palmar Aponeurosis

Various aberrant muscles and fibro-tendinous structures have been identified in the anterior wrist, some of them blamed to be possible causes for neurovascular compression syndromes. Herewith, we describe such an intriguing structure related to the flexor carpi ulnaris muscle. During routine dissection of both upper limbs of an adult cadaver, an interesting crescent-shaped fibro-tendinous structure was identified bilaterally, arising broadly from the lateral side of the distal tendon of the flexor carpi ulnaris. This aberrant structure arched over the ulnar artery and nerve before they enter the canal of Guyon and the median nerve just before the carpal tunnel. Further distally, the fibro-tendinous arch narrowed and interlaced with the flexor retinaculum and palmar aponeurosis longitudinal fibres. In this case there was also concomitant bilateral absence of the palmaris longus muscle. Because this aberrant fibro-tendinous arch has very close relations to the median nerve and ulnar nerve and artery in the wrist, it may possibly cause neurovascular compression during some muscle activity.Varios músculos y estructuras fibro-tendinosas aberrantes se han identificado en la parte anterior de la muñeca, muchas de las cuales se considera que pueden causar síndromes de compresión neurovascular. A continuación describimos una tal estructura relacionada con el músculo flexor carpi ulnaris. Durante disecciones de rutina de ambos miembros superiores de cadáveres de adultos fue descubierta una estructura fibro-tendinosa con forma de medialuna en ambos miembros originando de la parte lateral del tendón distal del flexor carpi ulnaris. Esta estructura formaba un arco pasando sobre y cubriendo la arteria y el nervio ulnar antes de que entren en el canal de Guyon, y sobre el nervio mediano justo antes de que entre en el canal carpal. Este arco fibro-tendinoso seguía estrechándose hasta entrelazarse con el ligamento transverso del carpo y las fibras longitudinales de la aponeuorisis palmar .En este mismo caso el músculo palmaris longus estaba ausente en ambas manos. Esta conexión entre el arco fibro-tendinoso y el nervio mediano, la arteria y el nervio ulnar en la muñeca posiblemente puede causar compresión neurovascular durante cierta actividad muscular.

scholarly journals Hypertrophied reverse palmaris longus muscle: a rare cause of carpal tunnel syndrome

2020 ◽  
Vol 7 (2) ◽  
pp. 576
Author(s):  
Narayanamurthy Sundaramurthy ◽  
Surya Rao Rao Venkata Mahipathy ◽  
Alagar Raja Durairaj
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
Palmar Aponeurosis ◽  
Tunnel Syndrome ◽  
Phalen's Test ◽  
Flexor Digitorum

Carpal tunnel syndrome (CTS) is usually secondary to compression or irritation of the median nerve in the fibro-osseous canal formed by the flexor retinaculum (transverse carpal ligament) and the carpal bones. The prevalence of CTS in the general population is about 7 to 19%. Several causes both local and systemic have been described, but CTS due to aberrant musculature are rare. Here we report a case of a middle-aged female with paresthesia of the hand and a positive Phalen’s test with nerve conduction study of the median nerve showing sensorimotor neuropathy. The patient underwent surgery for open CTS release where we found a hypertrophied reverse palmaris longus muscle attached to the palmar aponeurosis which was excised along with its proximal tendon. On post-operative follow up all the symptoms of CTS were completely resolved. Muscle abnormalities concern three muscles: the palmaris longus, the flexor digitorum superficialis of index, and the lumbricals. These muscles can be hypertrophied, bifid, duplicated, digastric, inverted or have an abnormal insertion, thus creating a mechanical restriction of the carpal tunnel. Surgical resection of abnormal muscle provides excellent functional recovery. 

scholarly journals Clinical Significance of a Duplicated Palmaris Longus Muscle with One Reversed Muscle: A Case Report

2020 ◽  
Vol 8 (C) ◽  
pp. 177-180
Author(s):  
Adegbenro Omotuyi John Fakoya ◽  
Jordan D'Souza ◽  
Andrea Mary Thomas Kallumadyil ◽  
Tess McClenahan ◽  
Allyson Talaroc ◽  
...  
Keyword(s):  
Case Report ◽  
Anterior Compartment ◽  
Muscle Belly ◽  
Palmaris Longus ◽  
Clinical Presentations ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
Double Muscle ◽  
Palmar Aponeurosis ◽  
The Right

BACKGROUND: Multiple variations of the palmaris longus (PL) muscle are reported throughout literature and include variations such as double muscle bellies, inversion of muscle belly and tendon, and the absence of the muscle. The muscle functions as a weak flexor of the wrist. It originates from the medial epicondyle of the humerus, projects as a superficial muscle of the anterior compartment of the forearm, lies over the transverse carpal ligament, and inserts into the palmar aponeurosis. CASE REPORT: Routine dissection of the right forearm of a 70-year-old Caucasian male revealed a rare duplicated PL muscle with the medial PL muscle being reversed. The left forearm appeared normal, with no such variations. The cadaver showed no significant pathological findings due to this variation. Innervation and vasculature of the variant muscle appeared normal. CONCLUSION: The PL muscle is highly variable, and clinicians need to be aware of its many possible presentations due to its involvement in surgery, symptomatic clinical presentations, and as an anatomical landmark.

scholarly journals The Prevalence and Patterns of Palmaris Longus Muscle Absence in an Iranian Population

2019 ◽  
Vol 9 (4) ◽  
pp. 279-282
Author(s):  
Mehdi Forouzesh ◽  
Abdolrazagh Barzegar ◽  
Fardin Fallah
Keyword(s):  
Gender Difference ◽  
Clinical Importance ◽  
Tendon Graft ◽  
Iranian Population ◽  
Geographical Variability ◽  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
And Gender ◽  
Gender Specific

Palmaris Longus (PL) is a muscle of the forearm, i.e., not functionally necessary and does not exist in all people. It is a choice for tendon graft and investigating its prevalence is of clinical importance. During April-October 2009, 102 cadavers (78 males, 24 females) were bilaterally necropsied for PL exploration in Zanjan City, Iran. PL Absence (PLA) was observed in 37 (36.3%) cases (28 males, 9 females). PLA prevalence was similar in men (36%) and women (37.5%). Of PLA cases, 19 (51%) were unilateral (14 males, 5 females), and 18 (49%) were bilateral (14 males, 4 females). In conclusion, PLA prevalence of 36.3% in our population was similar to other studies conducted in Iran. We found no gender difference in PLA prevalence and its patterns. Due to geographical variability in PLA rate, future regional and national studies with more magnificent sample sizes are recommended to determine the prevalence and gender-specific patterns of PLA.

Gross hypertrophy of the palmaris longus muscle simulating a tumour of the forearm

1948 ◽  
Vol 36 (142) ◽  
pp. 213-214 ◽  
Author(s):  
Roy Goulding
Keyword(s):  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle

scholarly journals Degenerative trends of the palmaris longus muscle in a South African population

2013 ◽  
Vol 27 (2) ◽  
pp. 222-226 ◽  
Author(s):  
G. Venter ◽  
A.N. Van Schoor ◽  
M.C. Bosman
Keyword(s):  
South African ◽  
African Population ◽  
South African Population ◽  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle

Epifascial accessory palmaris longus muscle

2006 ◽  
Vol 19 (6) ◽  
pp. 554-557 ◽  
Author(s):  
Cesare Tiengo ◽  
Veronica Macchi ◽  
Carla Stecco ◽  
Franco Bassetto ◽  
Raffaele De Caro
Keyword(s):  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle
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