scholarly journals Anatomic Variation of the Median Nerve Associated with an Anomalous Muscle of the Forearm

Folia Medica ◽  
2017 ◽  
Vol 59 (1) ◽  
pp. 106-109 ◽  
Author(s):  
Atoni Dogood Atoni ◽  
Charles Aidemise Oyinbo
Keyword(s):  
Median Nerve ◽  
Anatomic Variation ◽  
Anatomical Variations ◽  
Clinical Situation ◽  
Flexor Digitorum Profundus ◽  
Anomalous Muscle ◽  
Clinical Presentations ◽  
Male Cadaver ◽  
The Right ◽  
Flexor Digitorum

Abstract Documented anatomical variations are important not only for the study of the subject of anatomy, but also in clinical situation. This knowledge would aid surgeons in planning a preoperative strategy for surgical procedures and reconstructive surgery. The right forearm of a 35-year-old embalmed male cadaver present a splitting of the median nerve in the proximal 1/3 of the forearm to form medial and lateral divisions that accommodate an anomalous muscle. The split median nerve reunites at the distal 1/3 and continues as a single nerve. The anomalous muscle arises by muscle fibers from flexor digitorum superficialis and inserted by tendon into flexor digitorum profundus. There was no such variation in the left forearm. The knowledge of such anatomical variations is important to clinicians and surgeons in interpreting atypical clinical presentations and avoiding unusual injury during surgery.

A Cadaveric Study of Needle Insertion at Pc6 in Eight Wrists of Four Subjects and An Understanding of the Anatomy

2012 ◽  
Vol 30 (1) ◽  
pp. 44-46 ◽  
Author(s):  
Hyun Joo Oh ◽  
Yee Kyoung Ko ◽  
Sa Sun Cho ◽  
Sang Pil Yoon
Keyword(s):  
Median Nerve ◽  
Clinical Importance ◽  
Acupuncture Point ◽  
Anatomical Variations ◽  
Needle Insertion ◽  
Flexor Digitorum Profundus ◽  
Pronator Quadratus ◽  
Adjacent Structures ◽  
Median Artery ◽  
Flexor Digitorum

The anatomical structures vulnerable to acupuncture around the PC6 acupuncture point were investigated. Needles were inserted in PC6 of eight wrists from four cadavers to a depth of 2 cm, the forearms were dissected and the adjacent structures around the path of the needles were observed. The needles passed between the tendons of the palmaris longus and flexor carpi radialis muscles and then penetrated the flexor digitorum superficialis, flexor digitorum profundus and pronator quadratus muscles. The inserted needles were located adjacent to the median nerve. To minimise the risk of unintended injury by acupuncture, it is recommended that needles should not be inserted deeply at the PC6 acupuncture point. An understanding of the anatomical variations of the median nerve and the persistent median artery in the forearm is of clinical importance when performing acupuncture procedures.

scholarly journals Anatomical Variations of the Musculocutaneous and Median Nerves: A Case Report

Folia Medica ◽  
2019 ◽  
Vol 61 (2) ◽  
pp. 327-331 ◽  
Author(s):  
Marzieh Darvishi ◽  
Ardeshir Moayeri
Keyword(s):  
Median Nerve ◽  
Biceps Brachii ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Upper Extremities ◽  
Terminal Branch ◽  
Lateral Cord ◽  
Pectoralis Minor ◽  
Male Cadaver ◽  
The Right

Abstract The musculocutaneous nerve is a large terminal branch of the lateral cord of the brachial plexus. It passes under the pectoralis minor and penetrates the coracobrachialis muscle, descending between the biceps brachii and brachialis muscles in the arm. After dissection in upper extremities in a 28-year-old male cadaver, the median and musculocutaneous nerve were found to have variations on the right side where the musculocutaneous nerve formed communications with the median nerve. The median nerve innervated muscles of the front of the arm in this cadaver. In addition, the musculocutaneous nerve did not pierce the coracobrachialis muscle on the right side. Knowledge of these variations is extremely important when planning a surgery in the region of axilla.

Abnormal Course of the Median Nerve Associated with an Anomalous Belly of Flexor Digitorum Superficialis

HAND ◽  
1980 ◽  
Vol os-12 (3) ◽  
pp. 273-274 ◽  
Author(s):  
U. M. Figueiredo ◽  
G. Hooper
Keyword(s):  
Median Nerve ◽  
Index Finger ◽  
Flexor Digitorum Superficialis ◽  
Muscle Belly ◽  
Anomalous Muscle ◽  
The Right ◽  
Flexor Digitorum

We report an anomalous muscle belly of the flexor digitorum superficialis acting on the right index finger. The median nerve lay superficial to the muscle in the forearm and at the wrist.

LINBURG-COMSTOCK PHENOMENON FOLLOWING FOREARM LACERATION

Hand Surgery ◽  
2012 ◽  
Vol 17 (02) ◽  
pp. 221-224 ◽  
Author(s):  
B. Lin ◽  
S. Sreedharan ◽  
Andrew Y. H. Chin
Keyword(s):  
Index Finger ◽  
Interphalangeal Joint ◽  
Penetrating Injury ◽  
Flexor Digitorum Profundus ◽  
Flexor Pollicis Longus ◽  
Distal Interphalangeal Joint ◽  
Distal Interphalangeal ◽  
The Right ◽  
Flexor Digitorum ◽  
Wide Awake

A 20-year-old man presented with an inability to flex the interphalangeal joint of the right thumb without simultaneous flexion of the distal interphalangeal joint of the index finger following a penetrating injury to the right forearm. With a clinical suspicion of intertendinous adhesions between the flexor pollicis longus and the flexor digitorum profundus to the index finger, surgical exploration under wide-awake anesthesia was performed. Intraoperatively, the intertendinous adhesions were identified and divided completely. Postoperatively, the patient achieved good, independent flexion of the interphalangeal joint of the thumb. This case demonstrates a clinical picture similar to that of Linburg-Comstock syndrome, which occurred following a forearm penetrating injury. We call this the Linburg-Comstock (LC) phenomenon.

scholarly journals Bilateral Variation of Forearm Flexor Muscles - A Case Report and Clinical Significance

2012 ◽  
Vol 01 (01) ◽  
pp. 040-043
Author(s):  
D. Malar ◽  
Keyword(s):  
Middle Finger ◽  
Flexor Digitorum Profundus ◽  
Flexor Digitorum Superficialis ◽  
Flexor Carpi Ulnaris ◽  
Close Proximity ◽  
Flexor Muscles ◽  
Male Cadaver ◽  
Forearm Flexor Muscles ◽  
Flexor Digitorum ◽  
Forearm Flexor

AbstractDuring routine dissection, bilateral multiple variations of forearm flexor muscles were observed in a male cadaver. The variations were a) an additional belly arising from the coronoid process of ulna, distal to the origin of ulnar head of flexor digitorum superficialis, passing deep to flexor digitorum superficialis and joining the tendon of flexor digitorum profundus to the middle finger; b) an additional belly arising from the distal part of flexor carpi ulnaris and passing superficial to ulnar nerve and ulnar vessels in the Guyon's canal and c) the origin of second lumbricals from the profundus tendon in the carpal tunnel. An aberrant muscle may stimulate a ganglion or a soft tissue tumor or if in close proximity to a nerve, it may cause pressure neuritis. Identification of these variations is important in defining the anatomical features for clinical diagnosis and surgical procedures.

scholarly journals PRESENCE OF TRIPLE GANTZER'S MUSCLE - A RARE ANATOMICAL VARIATION

2013 ◽  
Vol 03 (01) ◽  
pp. 69-71
Author(s):  
Soubhagya R. Nayak ◽  
Suranjali Sharma ◽  
Hasi Dasgupta ◽  
Kalyan Bhattacharya
Keyword(s):  
Anatomical Variation ◽  
Flexor Digitorum Profundus ◽  
Neurovascular Compression ◽  
Peripheral Nerve Disorder ◽  
Anterior Interosseous Nerve ◽  
Male Cadaver ◽  
Clinically Significant ◽  
Anterior Interosseous Nerve Syndrome ◽  
Flexor Digitorum ◽  
Forearm Flexor

AbstractAnomalous muscles usually do not result in adverse symptoms but are of academic interest. However, these muscles can create neurovascular compression at times. Muscle anomalies of the upper extremity are recognized causes of peripheral nerve disorder. Koloh-Nevin Syndrome (Anterior Interosseous Nerve Syndrome) caused by the compression neuropathy of the anterior interosseous nerve in the forearm is believed to occur because of its compression by the accessory heads of flexor pollics longus (FPLah) and flexor digitorum profundus (FDPah). The above two accessory muscles are also called Gantzer's muscle. During routine cadaveric dissection, we encountered multiple Gantzer's muscles in a 60 year-old- formalin embalmed male cadaver. Along with the usual FPLah and FDPah described by Gantzer, we too observed an accessory muscle in relation to the flexor digitorum superficialis (FDS). All the three anomalous muscles had a common origin from the under cover of the FDS fibers and by fibrous band above the insertion of brachialis. The presence of multiple additional muscles in the forearm flexor compartment is rare and clinically significant.

scholarly journals Abnormal Division of Axillary Artery - A Case Report

2012 ◽  
Vol 01 (01) ◽  
pp. 044-047
Author(s):  
N Ratnakar Rao
Keyword(s):  
Median Nerve ◽  
Radial Artery ◽  
Brachial Artery ◽  
Axillary Artery ◽  
Practical Importance ◽  
Lateral Side ◽  
Superficial Branch ◽  
Collateral Artery ◽  
Male Cadaver ◽  
The Right

AbstractA case of the abnormal branching of the right Axillary artery in a 60 year old male cadaver is presented here. The axillary artery divided into two trunks, a lateral and medial from the second part only in this case. The lateral branch was superficial running between two roots of median nerve, which here is referred to as superficial branch. The other was a medial trunk, running deep to median nerve on the medial, hence it is referred as deep brachial artery. The superficial branch had a similar course as radial artery coursing on the lateral side of cubital fossa, fore arm, anatomical snuff box and hand, hence it was considered as equivalent to radial artery. The deep brachial artery gave rise to anterior and posterior circumflex humeral arteries and the superior ulnar collateral artery. This variation is rare and the incidence quoted as around 0.12 - 3.2% in the available literature. The normal and abnormal anatomy of the axillary artery is having practical importance for the radiologists during angiography and surgeons for accurate diagnostic interpretation.

scholarly journals Bilateral variations in the roots of origin of the phrenic nerve and absence of fibrous pericardium in an old male cadaver

2016 ◽  
Vol 33 (03) ◽  
pp. 164-167
Author(s):  
S. Ahmadpour ◽  
K. Foghi
Keyword(s):  
Brachial Plexus ◽  
Phrenic Nerve ◽  
Practical Importance ◽  
Anatomical Variations ◽  
Rare Variation ◽  
Male Cadaver ◽  
Supraclavicular Block ◽  
The Right ◽  
Mediastinal Pleura

AbstractPhrenic nerve provides the major motor supply to diaphragm. Various anatomical variations in the course and distribution of the phrenic nerve have reported before. Here we report a rare bilateral asymmetric variation in the roots of origin of the phrenic nerve and absence of fibrous pericardium in an old male cadaver. Specifically, the right phrenic nerve was arising from the upper trunk of the brachial plexus (C5) and the left side nerve originated from the supraclavicular nerve and a tiny branch from C5. In the same cadaver both sides phrenic nerve were buried in the mediastinal pleura. Another interesting finding was absence of the fibrous pericardium. To the best of our knowledge the presented case showed a very rare variation in the roots of origin of the phrenic nerve accompanied with pericardial anomaly which has been less reported. We think such case is of practical importance during supraclavicular block during anesthesia

Neurotization as an alternative for restoring finger and wrist extension

2001 ◽  
Vol 94 (5) ◽  
pp. 795-798 ◽  
Author(s):  
Mehmet Erkan Üstün ◽  
Tunç Cevat Öğün ◽  
Mustafa Büyükmumcu
Keyword(s):  
Median Nerve ◽  
Motor Nerve ◽  
Flexor Digitorum Profundus ◽  
Posterior Interosseous Nerve ◽  
Flexor Pollicis Longus ◽  
Pronator Quadratus ◽  
Content Type ◽  
Pronator Teres ◽  
Flexor Digitorum ◽  
Fine Print

Object. In cases of irreparable injuries to the radial nerve or in cases in which nerves are repaired with little anticipation of restoration of function, tendon transfers are widely used. In this study, the authors searched for a more natural alternative for selectively restoring function, with the aid of a motor nerve transfer. Methods. Ten arms from five cadavers were used in the study. The posterior interosseous nerve and the median nerve together with their motor branches were exposed in the proximal forearm. The possibility of posterior interosseous nerve neurotization via the median nerve through its motor branches leading to the pronator teres, flexor pollicis longus, flexor digitorum profundus, and pronator quadratus muscles was investigated. The lengths of the nerves from points of divergence and their widths were measured using calipers, and the means with standard deviations of all nerves were calculated. Motor branches to the pronator teres, flexor pollicis longus, and pronator quadratus muscles were found to be suitable for neurotization of the posterior interosseous nerve at different levels and in various combinations. The motor nerve extending to the flexor digitorum profundus muscle was too short to use for transfer. Conclusions. These results offer a suitable alternative to tendon transfer for restoring finger and wrist extension in cases of irreversible radial palsy. The second step would be clinical verification in appropriate cases.

Acute Carpal Tunnel Syndrome Caused by Anomalous Muscle Bellies: A Case Report

Hand Surgery ◽  
2003 ◽  
Vol 08 (01) ◽  
pp. 141-143 ◽  
Author(s):  
Hiroshi Kono
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Carpal Tunnel Release ◽  
Clinical Situation ◽  
Perilunate Dislocation ◽  
Anomalous Muscle ◽  
Operative Exploration ◽  
Tunnel Syndrome ◽  
Flexor Digitorum ◽  
Acute Carpal Tunnel Syndrome

We reported on an acute carpal tunnel syndrome that occurred two hours after the internal fixation of scaphoid. Operative exploration showed median nerve compression caused by flexor digitorum superficialis muscle bellies within the carpal tunnel. Symptoms were relieved immediately after the carpal tunnel release. This case was very rare because acute carpal tunnel syndrome was caused by swollen muscle bellies within the carpal tunnel after the initial operation for the trans-scaphoid perilunate dislocation. This clinical situation should be distinguished from compartment syndrome of forearm.

Sign in / Sign up

Export Citation Format

Share Document