scholarly journals Study of muscular branch of median nerve to the pronator teres

2013 ◽  
Vol 02 (02) ◽  
pp. 067-070
Author(s):  
MK Bindurani ◽  
HM Lokesh ◽  
BN Nanjundappa
Keyword(s):  
Median Nerve ◽  
Innervation Pattern ◽  
Adequate Treatment ◽  
Iatrogenic Injuries ◽  
Pronator Teres ◽  
Entrapment Neuropathies ◽  
Study Results ◽  
Muscular Branch ◽  
Single Branch ◽  
Number Of Branches

Abstract Background and aims : Disorders of the peripheral nervous system are common among which entrapment neuropathies are frequently encountered by the clinician. The knowledge of innervation pattern of median nerve to pronator teres are of considerable importance in understanding the various presentations of pronator teres syndrome, in investigating the lesions of median nerve, to plan adequate treatment and to avoid iatrogenic injuries during surgeries there by increasing the perfection of surgical approach. The aim of present study is to study the point of origin of muscular branches of median nerve to pronator teres muscle with respect to interepicondylar line and to study the number of branches of median nerve to the pronator teres muscle. Materials and methods : Fifty upper limbs procured from embalmed cadavers aged about 20 to 50 years were used for the study. Results : Out of total 50 specimens, nerve to pronator teres was arising at a mean distance of 1.31 ± 0.58 cm proximal to the interepicondylar line (range 0.5 - 3cm) and 1.2 ± 1.27 cm distal to the interepicondylar line (0-3.5cm). Conclusion: In greater number of the specimens, the nerve to the pronator teres was arising from the median nerve proximal to the interepicondylar line. In majority of the specimens the pronator teres was innervated by either single branch or two branches.

scholarly journals Study of muscular branch of median nerve to the pronator teres

2013 ◽  
Vol 2 (2) ◽  
pp. 67
Author(s):  
MK Bindurani ◽  
HM Lokesh ◽  
BN Nanjundappa
Keyword(s):  
Median Nerve ◽  
Pronator Teres ◽  
Muscular Branch

scholarly journals Applied Anatomy of Median and Ulnar Nerve Branches in Operations for Forearm Muscles Neurotization

2014 ◽  
pp. 74-77
Author(s):  
I. O. Golubev ◽  
S. A. Zhuravlyov
Keyword(s):  
Median Nerve ◽  
Ulnar Nerve ◽  
Upper Extremities ◽  
Flexor Muscle ◽  
Main Trunk ◽  
Topographic Anatomy ◽  
Applied Anatomy ◽  
Pronator Teres ◽  
Forearm Muscles ◽  
Number Of Branches

To determine the potentialities of median nerve motor branches neurotization by the ulnar nerve and vice versa the anatomy of muscular branches of median and ulnar nerves in the forearm was studied in detail. Study was performed on 20 upper extremities from 10 adult cadavers. The number of branches, their length and precise place of divergence from the main trunk were assessed. It was stated that topographic anatomy of muscular branches of the median and ulnar nerves in the forearm was quite invariable. For neuratization from the median nerve the longest branches that passed to pronator teres muscles and superficial flexor muscle of fingers can be used; from the ulnar nerve - long branch to the ulnar flexor muscle of wrist.

scholarly journals Prevalence and anatomical pattern of the median artery among adult black Kenyans

2017 ◽  
Vol 6 (3) ◽  
pp. 1015-1023 ◽  
Author(s):  
Isaac Cheruiyot ◽  
Brian Bundi ◽  
Jeremiah Munguti ◽  
Beda Olabu ◽  
Brian Ngure ◽  
...  
Keyword(s):  
Median Nerve ◽  
Ulnar Artery ◽  
Human Anatomy ◽  
Pronator Teres ◽  
Entrapment Neuropathies ◽  
Ultrasound Evaluation ◽  
Interosseous Artery ◽  
Median Artery ◽  
The Common ◽  
Formalin Fixed

Knowledge of the anatomy of median arteries is important in the diagnosis and management of carpal tunnel and pronator teres syndromes, reconstructive surgery in the forearm, minimizing inadvertent vascular injury as well as in limiting operative complications due to unexpected bleeding. The anatomical pattern displays ethnic differences but there are few studies on black Africans. This study therefore sought to describe the anatomy of median arteries in an adult black Kenyan population. A total of sixty two (62) upper limbs from thirty one (31) formalin-fixed cadavers were studied at the Department of Human Anatomy, University of Nairobi, Kenya. The prevalence, origin, types, relationship with median nerves and termination were determined. Median arteries were observed in 37 (59.7%) cases. Of these, the palmar type comprised 12 (32.4%) and antebrachial type 25 (67.6%) cases. It occurred bilaterally in 14 (45.2%) cases. The most common origin was the common interosseous artery (21; 56.8%) followed by anterior interosseous (13; 35.1%) and ulnar 3 (8.1%) arteries. The artery pierced the median nerve in 7 (18.9%) cases. The palmar type terminated by uniting with the ulnar artery to form a median-ulnar type of superficial palmar arterial arch in 8 (21.6%) cases and directly gave rise to the first, second and third common digital arteries in 4 (10.8%). In conclusion, the median artery occurs in nearly 60% of the population, much higher than in prevailing literature reports. Prevalence of the palmar type of median arteries and that of median arteries piercing median nerves are also higher than in other populations. Accordingly, presence of median artery and consequently other vascular and median nerve variations should be considered in the differential diagnosis of forearm entrapment neuropathies and due caution taken during forearm surgical procedures. We recommend preoperative ultrasound evaluation of the forearm and hand vascular system.Keywords: Median artery, origin, prevalence, median nerve, Kenyan

scholarly journals A Study on Distribution and Mode of Origin of Median Nerve and its Relation to the Flexor Retinaculum

2020 ◽  
Vol 6 (1) ◽  
pp. 20-25
Author(s):  
Atoofa Jaleel ◽  
Ravinder M
Keyword(s):  
Median Nerve ◽  
Research Centre ◽  
Terminal Branch ◽  
Recurrent Nerve ◽  
College Hospital ◽  
Medical College ◽  
Pronator Teres ◽  
Flexor Retinaculum ◽  
Precise Knowledge ◽  
Number Of Branches

Introduction:The precise knowledge of level of origin of muscular branches of median nerve are essential in free muscular transfers to restore the mobility of fingers after trauma and to understand the various presentations of nerve entrapment. The anatomical knowledge and variations of recurrent nerve is important to prevent the complications during the release of transverse carpal ligament.Aim & Objectives: To study the points of origin of muscular branches with respect to IEL and number of branches to muscles of forearm and also learn the mode of origin of recurrent nerve and its relation to the flexor retinaculum.Subjects and Methods:Dissection 40 upper limbs procured from embalmed cadavers of Dr. VRK Women’s Medical College, Hospital and Research Centre, Hyderabad, for the study.Results:The mean of point of origin of NPT was 1.21 cm proximal and 1.20 cm distal to IEL whereas for NFCR, NPL, NFDS and AIN nerve it was 2.12 cm, cm, 4.54 cm and 3.29 cm distal to IEL respectively. The number of branches to muscles of forearm varied from 1 to 3. The recurrent nerve was arising from lateral and intermediate branches of median nerve in 39 (97.5%) and 1 specimens (6%) respectively. Its relationship with flexor retinaculum was extra ligamentous in 33 specimens (82.5%) and transligamentous in 7 specimens (17.5%). It innervated APB, FPB and OP in 19 specimens (47.5%), only APB, FPB in 16 specimens (45%) and only APB, OP in 3 specimens (7.5%).Conclusion:All the muscular branches of median nerve were arising predominantly distal to IEL except nerve to pronator teres. The number of branches varied from 1 to 3. In majority of the specimens, the recurrent nerve was arising from the lateral terminal branch of median nerve and its relation with flexor retinaculum was extraligamentous.

scholarly journals Applied Anatomy of Median and Ulnar Nerve Branches in Operations for Forearm Muscles Neurotization

2014 ◽  
Vol 21 (2) ◽  
pp. 74-77
Author(s):  
I. O Golubev ◽  
S. A Zhuravlyov
Keyword(s):  
Median Nerve ◽  
Ulnar Nerve ◽  
Upper Extremities ◽  
Flexor Muscle ◽  
Main Trunk ◽  
Topographic Anatomy ◽  
Applied Anatomy ◽  
Pronator Teres ◽  
Forearm Muscles ◽  
Number Of Branches

To determine the potentialities of median nerve motor branches neurotization by the ulnar nerve and vice versa the anatomy of muscular branches of median and ulnar nerves in the forearm was studied in detail. Study was performed on 20 upper extremities from 10 adult cadavers. The number of branches, their length and precise place of divergence from the main trunk were assessed. It was stated that topographic anatomy of muscular branches of the median and ulnar nerves in the forearm was quite invariable. For neuratization from the median nerve the longest branches that passed to pronator teres muscles and superficial flexor muscle of fingers can be used; from the ulnar nerve - long branch to the ulnar flexor muscle of wrist.

Transient Proximal Median Nerve Entrapment in a Tetraplegic Hand Cyclist Following a 24-Hour Endurance Race

2021 ◽  
Author(s):  
Søren Bruno Elmgreen
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Unusual Case ◽  
Endurance Athlete ◽  
Nerve Entrapment ◽  
Pronator Teres ◽  
Anterior Interosseous Nerve ◽  
Tunnel Syndrome ◽  
Anterior Interosseous Nerve Syndrome

ABSTRACT Median nerve entrapment is a frequent disorder encountered by all clinicians at some point of their career. Affecting the distal median nerve, entrapment occurs most frequently at the level of the wrist resulting in a carpal tunnel syndrome. Median nerve entrapment may also occur proximally giving rise to the much less frequent pronator teres syndrome and even less frequent anterior interosseous nerve syndrome, which owing to the paucity of cases may prove challenging to diagnose. An unusual case of anterior interosseous syndrome precipitated by extraordinary exertion in a tetraplegic endurance athlete is presented with ancillary dynamometric, electrodiagnostic, ultrasonographic, and biochemical findings.

scholarly journals Aberrant Positioning of the Ulnar Nerve Found During Carpal Tunnel Release: A Case Report

2019 ◽  
Author(s):  
David R. Veltre ◽  
Kelvin Naito ◽  
Xinning Li ◽  
Andrew B. Stein
Keyword(s):  
Case Report ◽  
Median Nerve ◽  
Ulnar Nerve ◽  
Carpal Tunnel ◽  
Carpal Tunnel Release ◽  
Distal Forearm ◽  
Anatomic Variations ◽  
Transverse Carpal Ligament ◽  
Iatrogenic Injuries ◽  
Flexor Retinaculum

Introduction: Aberrant positioning of the ulnar nerve volar to the transverse carpal ligament is a rare anatomic variation.Case Presentation: We present the case of a 55-year-old female with unique ulnar nerve anatomy that was discovered introperatively during carpal tunnel release.  The ulnar nerve was running directly adjacent to the median nerve in the distal forearm and as the median nerve traversed dorsal to the transverse carpal ligament (flexor retinaculum) to enter the carpal tunnel the ulnar nerve continued directly volar to this structure before angling towards Guyon’s Canal.  The unique ulnar nerve anatomy was successfully identified, carefully dissected and managed with a successful patient outcome.Conclusion: Variations of the anatomy at the level of the carpal tunnel are rare but do exist.  Awareness of these anatomic variations and adequate visualization of the ulnar nerve along with the surrounding structures is crucial to avoid iatrogenic injuries during carpal tunnel release. 

Surgery of the carpal tunnel

1978 ◽  
Vol 49 (2) ◽  
pp. 316-318 ◽  
Author(s):  
Noel Eboh ◽  
Donald H. Wilson
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Modified Technique ◽  
Content Type ◽  
Electrical Studies ◽  
Entrapment Neuropathies ◽  
Palmaris Longus ◽  
Tunnel Syndrome ◽  
Fine Print

✓ The authors describe a modified technique for surgery of the carpal tunnel. The primary cause of the carpal tunnel syndrome is the same as other entrapment neuropathies: an enlarged nerve within a tight tunnel. Electrical studies have shown that the area of compression is in the middle of the tunnel. Treatment is surgical: a palmar incision, which begins at the wrist medial to the palmaris longus, to avoid damage to the sensory branch of the median nerve; and section of the retinaculum from the exit of the tunnel toward the entrance.

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