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Topic: Median nerve


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In the News (Tue 1 Dec 09)

  
  Median nerve
It is one of the five main nerves originating from the brachial plexus.
The median nerve is formed from parts of the medial and lateral cords, and continues down the arm.
The median nerve is the only nerve that passes through the carpal tunnel[?], so it plays a large part in carpal tunnel syndrome.
www.ebroadcast.com.au /lookup/encyclopedia/me/Median_nerve.html   (193 words)

  
 highmediannerve
The median nerve is formed along the lateral wall of the axilla by the confluence of the medial and lateral cords of the brachial plexus.
The median nerve is formed in the axilla by equal contributions of the medial (C5-C7) and lateral (C8-Tl) cords of the brachial plexus.
Provocative testing of the median nerve for proximal entrapment is extremely useful because it is hypothesized that the compression of the nerve relates to both the position of the forearm and muscular contraction.
www.simmonsortho.com /literature/highmediannerve/highmediannerve.html   (6531 words)

  
 Disease - Distal median nerve dysfunction - Hartford, Connecticut
Distal median nerve dysfunction is a form of peripheral neuropathy (nerve dysfunction outside the central nervous system) affecting movement of or sensation in the hand, caused by damage to the distal median nerve.
Dysfunction of a single nerve group, such as the distal median nerve, is classed as mononeuropathy.
The nerve can also be compressed at the wrist by tendonitis, arthritis, or conditions that affect connective tissue or cause deposits in the tissues (such as multiple myeloma, pregnancy, acromegaly, and hypothyroidism).
www.saintfranciscare.com /11800.cfm   (819 words)

  
 Median nerve
The median nerve travels deep in the antecubital fossa to its apex and passes between the heads of the pronator teres.
Usually caused by compression of the median nerve as it passes between the superficial and deep heads of the pronator teres.
The median nerve descends in the forearm adherent to the undersurface of the flexor digitorum sublimis and lying superficial to the flexor digitorum profundus.
www.ucsf.edu /nreview/09.2-PeriphNerve-Upper/MedianNerve.html   (1293 words)

  
 Median nerve -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-07)
It is one of the five main nerves originating from the (A network of nerves formed by cervical and thoracic spinal nerves and supplying the arm and parts of the shoulder) brachial plexus.
It enters the forearm (with the (The main artery of the upper arm; a continuation of the axillary artery; bifurcates into the radial and ulnar arteries at the elbow) brachial artery) and innervates most of the flexors in the forearm.
The proximal part of the palm is supplied by a palmar branch, which leaves the nerve proximal to the (A joint between the distal end of the radius and the proximal row of carpal bones) wrist creases.
www.absoluteastronomy.com /encyclopedia/m/me/median_nerve.htm   (174 words)

  
 Median Nerve at the Wrist (Carpal Tunnel Syndrome)   (Site not responding. Last check: 2007-11-07)
Median Nerve at the Wrist (Carpal Tunnel Syndrome)
The median nerve, which derives its name from its course along the midline of the forearm, travels from the elbow along this course to the center of the wrist and then into the hand.
In the median nerve compression test, for example, the physician applies pressure to the region of the median nerve at the carpal tunnel.
www.dochand.com /7A4d1a_index.html   (1311 words)

  
 BioMed Central | Full text | Shoulder posture and median nerve sliding
The median nerve was imaged in longitudinal section in the forearm during forward head position, trunk flexion and protraction and in the forearm and upper arm during contralateral neck side flexion (CNSF).
The additional strain on the median nerve was 0.7% (SEM, 0.3), given by the slope of the regression of nerve movement against distance along the arm (Figure 2).
In 11 subjects the median nerve moved in a proximal direction during 35° CNSF when the scapulothoracic joint was in neutral, as reported previously [6].
www.biomedcentral.com /1471-2474/5/23   (3086 words)

  
 Journal of NeuroEngineering and Rehabilitation | Full text | Thumb force deficit after lower median nerve block
The lesion was simulated by blocking the median nerve at the wrist using an anesthetic.
We hypothesized that a median nerve block would cause (1) a decrease in force production, which would be direction-dependent with the most severe reduction in the abduction direction, and (2) a decrease in the force envelope area and force quadrant area, with the greatest decrease in the abduction quadrant.
The median nerve innervates the abductor pollicis brevis, the opponens pollicis and superficial head of the flexor pollicis brevis, all of which contribute to the abduction and flexion of the thumb [4]; therefore, denervation of these muscles after median nerve block would cause the greatest force deficit related to median nerve function [5].
www.jneuroengrehab.com /content/1/1/3   (3955 words)

  
 Median Nerve - Wheeless' Textbook of Orthopaedics
- entrapment of median nerve at the elbow and forearm:
Congenital anomaly of the thumb: absent intrinsics and flexor pollicis longus.
Injection injuries to the median and ulnar nerves at the wrist.
www.wheelessonline.com /ortho/median_nerve   (469 words)

  
 Inversion of the F-waves in Median Neuropathy at the Wrist (Carpal Tunnel Syndrome)
Measurements in unpublished cadaver studies (Scott, 1995) have demonstrated that the length of the median nerve from the nerve roots to the abductor pollicis brevis (APB) is shorter than the length of the ulnar nerve from the nerve roots to the abductor digiti minimi (ADM).
At a fixed distance of 8 cm, the median and ulnar mixed nerves were orthodromically and supramaximally stimulated and the average of eight responses was recorded.
Measurements in cadaver studies have demonstrated that the median nerve is shorter than the ulnar nerve in a small series studied (Scott, 1995).
mitpress.mit.edu /e-journals/JCN/articles/002/Menkes.html   (4106 words)

  
 Lipofibroma of the median nerve in the palm and digits of the hand - Wheeless' Textbook of Orthopaedics
The diagnosis is usually made at surgical exploration of a mass in the distal part of the forearm, the wrist, the palm, or the digits of the hand, which may be asymptomatic or associated with symptoms of carpal-tunnel syndrome.
The diagnosis should be made when exploration reveals fusiform enlargement of a segment of the median nerve or its cutaneous branches without hypertrophy of the regional tissues.
The tumorous part of the median nerve was partly or completely excised in seven of twenty-six cases reviewed in the literature and this report.
www.wheelessonline.com /l7/48.htm   (262 words)

  
 Essentials of Assessment: Median Nerve Compression Pathologies
The median nerve and its branches innervate primarily the flexors of the wrist and fingers, as well as several muscles of the thumb.
The median nerve is derived from the C5-T1 nerve roots.
This is a common region of median nerve compression and is commonly mistaken for CTS.
www.massagetoday.com /archives/2004/10/11.html   (852 words)

  
 Carpal tunnel syndrome   (Site not responding. Last check: 2007-11-07)
The median nerve is responsible for both sensation and movement in the hand, in particular the thumb and first three fingers.
These tests involve stimulating the median nerve with electricity and measuring the resulting speed and strength of the muscle response, as well as recording speed of nerve transmission across the carpel tunnel.
A type of test in which a nerve's function is tested by stimulating a nerve with electricity, and then measuring the speed and strength of the corresponding muscle's response.
www.rwjhamilton.org /Atoz/ency/carpal_tunnel_syndrome.asp   (1223 words)

  
 AAOS On-Line Service Academy News - Balloon catheter relieves pressure on median nerve in carpal tunnel   (Site not responding. Last check: 2007-11-07)
A new procedure to alleviate carpal tunnel syndrome uses a balloon catheter to stretch and expand the ligament and relieve pressure on the median nerve in the carpal tunnel of the wrist.
To relieve the pressure on the median nerve in the hand, a balloon is inserted within the carpal tunnel through a small incision in the wrist.
A custom-designed nerve protector protects the median nerve and flexor tendons in the carpal tunnel during balloon inflation.
www.aaos.org /wordhtml/aaosnews/carpal.htm   (505 words)

  
 PREVALENCE OF ABNORMAL MEDIAN NERVE CONDUCTION IN APPLICANTS FOR INDUSTRIAL JOBS   (Site not responding. Last check: 2007-11-07)
The prevalence of abnormal median nerve conduction in applicants for industrial jobs was assessed to determine the extent to which workers diagnosed with carpal tunnel syndrome may have had preexisting disease.
Median neuropathy was measured as the difference between the median and ulnar sensory latencies.
Approximately 17% of the applicants were classified as having median neuropathy in at least one hand by electrophysiological criteria; only 10% of these applicants, however, acknowledged symptoms associated with carpal tunnel syndrome on their questionnaire or showed clinical symptoms upon examination.
infoventures.com /osh/abs/inma0002.html   (320 words)

  
 Median Nerve at the Elbow (Pronator Syndrome)   (Site not responding. Last check: 2007-11-07)
As the median nerve enters the forearm, it does so by traveling between the two parts of a muscle called the pronator teres muscle.
As the median nerve enters the muscle, there is a fibrous band which can compress the nerve.
Indeed, the two conditions may coexist, and entrapment of the median nerve may be evident both in the proximal forearm and at the wrist level.
www.dochand.com /7A4d1b_index.html   (432 words)

  
 carpal tunnel syndrome median nerve entrapment at the wrist by Dr. Bermant plastic and hand surgery
Carpal Tunnel Syndrome (Median Nerve entrapment at the wrist)
The tunnel is a space through the wrist bones where nine tendons and the median nerve pass from the forearm to the hand.
Nerve conduction testing and electromyogram (EMG) may evaluate the extent of damage and whether the neck, shoulder, or elbow are involved.
www.plasticsurgery4u.com /procedure_folder/carpal_tunnel.html   (1053 words)

  
 Journal of Family Practice: Carpal tunnel syndrome: a case of median nerve injection injury and a safe and effective ...
The carpal tunnel syndrome is a compressive neuropathy of the median nerve at the wrist.
At the time of surgery, the transverse carpal ligament was incised and a persistent median artery (which was patent) and bifid median nerve were identified.
This is a thick and fibrous band that attaches to the scaphoid tuberosity and trapezium radially, and the pisiform and hook of the hamate ulnarly.
www.findarticles.com /p/articles/mi_m0689/is_n1_v43/ai_18549058   (1367 words)

  
 Carpal tunnel syndrome
Carpal tunnel syndrome is compression of the median nerve at the wrist, which may result in numbness, tingling, weakness, or muscle atrophy in the hand and fingers.
Carpal tunnel syndrome is caused by pressure exerted on the median nerve at the point where it passes through the wrist.
The median nerve supplies sensation to the thumb-side of the palm, and to the thumb, index finger, middle finger, and the thumb-side of the ring finger.
www.healthscout.com /ency/article/000433.htm   (428 words)

  
 Case Report 10: A triple transligamentous variation of motor branch of median nerve in a cadaver   (Site not responding. Last check: 2007-11-07)
The below mentioned anatomic variation of the median nerve was found in a 55 year old man during cadaver dissections performed by the authors for carpal tunnel anatomy in formalin fixed cadavers.
The median nerve and the palmar cutaneous branch was found and perforation of volar carpal ligament was demonstrated (figure 1).
The anatomy of the recurrent branch of the median nerve.
www.leeds.ac.uk /handsurgery/EJHS/caserep10.html   (568 words)

  
 Clinical Papers: Median Nerve, Cervical Radiculopathy
Neurography can be used to make a projection image of the median nerve passing through the carpal tunnel and simplifies the assessment of nerve movement during joint flexion.
Nerve image hyperintensity in severe radiculopathy can be measured as a contrast to noise ratio which is statistically significant.
Identification of small isolated nerve tumors, including perineuriomas and schwannomas is greatly improved by the application of MR Neurography.
www.neurography.com /Clinical.htm   (299 words)

  
 Carpal tunnel syndrome - symptoms and treatment of median nerve compression
Running through the carpal tunnel are the tendons that we use to bend the fingers and wrist, and the median nerve.
The median nerve also controls some of the muscles that move the thumb.
Treatment aims to relieve the symptoms of carpal tunnel syndrome by reducing the pressure on the median nerve.
hcd2.bupa.co.uk /fact_sheets/mosby_factsheets/carpal_tunnel.html   (1201 words)

  
 Journal of the American Chiropractic Association: A Functional Approach to Median Nerve Entrapment: A Case Report
Needle electromyography and nerve conduction velocity studies were positive for confirming the carpal tunnel diagnosis.
It is formed along the lateral wall of the axilla by the confluence of the medial (C5-C7) and lateral (C8-T1) cords of the brachial plexus.1 Motor innervation includes the thenar region, the elbow joint, anterior forearm, intrinsic muscles of the hand, and the first two lumbrical muscles.
The objective of this case report is to delineate common muscular and kinetic chain imbalances that occur in the forearm and wrist and contribute to median nerve entrapment syndromes.
www.findarticles.com /p/articles/mi_qa3841/is_200411/ai_n9459760   (1019 words)

  
 Bilateral Median Nerve Neuropathy
What your doctor is referring to when he says you have bilateral median neuropathy is a problem with the median nerve.
This is the nerve involved with carpal tunnel syndrome.
You can, however, have problems with your median nerve that are not CTS but in your case that would be unlikely.
www.medhelp.org /perl6/neuro/archive/6205.html   (338 words)

  
 Emergence of Radial Nerve Dominance in Median Nerve Cortex After Median Nerve Transection in an Adult Squirrel Monkey ...
nerve, ulnar nerve and median nerve (proximal stump) evoked responses.
Median nerve section induced a progressive change in the radial nerve profile.
It is noteworthy that the radial nerve response, in its baseline (precut) form and throughout reorganization, maintains a
jn.physiology.org /cgi/content/full/77/1/522   (2216 words)

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