median nerve


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Related to median nerve: median nerve test, median nerve injury

me·di·an nerve

[TA]
formed by the union of medial and lateral roots from the medial and lateral cords of the brachial plexus, respectively; it supplies all the muscles in the anterior compartment of the forearm with the exception of the flexor carpi ulnaris and ulnar half of the flexor digitorum profundus; it passes through the carpal tunnel to supply the thenar muscles (except adductor pollicis and the deep head of flexor pollicis brevis) via its recurrent thenar branch; its sensory fibers are distributed to the skin of the palmar and distal dorsal aspects of the radial three-and-a-half digits and adjacent palm. The median nerve is most commonly injured through compression in carpal tunnel syndrome, resulting in a loss of ability to oppose the thumb (thus creating "ape hand") and loss of sensation over the radial portion of the hand.
Synonym(s): nervus medianus [TA]

median nerve

A primarily sensory nerve of the arm, located at the medial and lateral cords of the brachial plexus at C6–T1 of the brachial plexus.

Route
Deep within the medial bicipital furrow to the cubital fossa, passing between the two heads of the pronator teres, then descending deep to the superficial flexor of the digits and flexor retinaculum.

Branches, forearm
• Anterior interosseous branch.
• Palmar cutaneous branch.
 
Branches, hand
• Recurrent branch to muscles of the thenar compartment, which innervates the flexor pollicis bevis, abductor pollicis brevis and opponens pollicis.
• Digital cutaneous branches, which supply the:
   – Lateral (radial) three and a half digits on palmar side;
   – Index, middle and ring finger on dorsum of hand.
• Motor innervation to the first and second lumbricals of hand.

me·di·an nerve

(mē'dē-ăn nĕrv) [TA]
Formed by the union of medial and lateral roots from the medial and lateral cords of the brachial plexus, respectively; it supplies all the muscles in the anterior compartment of the forearm with the exception of the flexor carpi ulnaris and ulnar half of the flexor digitorum profundus; it passes through the carpal tunnel to supply the thenar muscles (except adductor pollicis and the deep head of flexor pollicis brevis) via its recurrent thenar branch; its sensory fibers are distributed to the skin of the palmar and distal dorsal aspects of the radial three-and-a-half digits andadjacent palm. The median nerve is most commonly injured through compression in carpal tunnel syndrome, resulting in a loss of ability to oppose the thumb (thus creating "ape hand") and loss of sensation over the radial portion of the hand.

median nerve

One of the two major nerves of the arm, supplying most of the muscles and providing sensation in the two-thirds of the hand on the thumb side.

Median nerve

A nerve which runs through the wrist and into the hand. It provides sensation and some movement to the hand, the thumb, the index finger, the middle finger, and half of the ring finger.

me·di·an nerve

(mē'dē-ăn nĕrv) [TA]
Formed by the union of medial and lateral roots from the medial and lateral cords of the brachial plexus, respectively; it supplies all the muscles in the anterior compartment of the forearm with the exception of the flexor carpi ulnaris and ulnar half of the flexor digitorum profundus.
References in periodicals archive ?
In another study, CSA of the median nerve at pisiform, hamate bone levels, and at the distal wrist crease and the AP diameter of the median nerve within the carpal tunnel and wrist-to-forearm ratio (WFR) showed significant differences between the patient and control groups.
Different results have been obtained in studies that aimed to determine the normal values of the cross-sectional area of the median nerve. In 1999, Duncan et al.
We recommend that the recipient nerve can be radial nerve, median nerve, and musculocutaneous nerve.
Estimating the prevalence of delayed median nerve conduction in the general population.
Successful Vester-Andersen block criteria include the effective block in the areas innervated by at least two musculocutaneous nerves, median nerve, ulnar nerve and radial nerve (10).
Management of intraneural fibro-lipoma of the median nerve and the role of Pressure-Specified Sensory Device (PSSD) for the patient's motor and sensorial evaluations.
Detailed physical examination focusing on range of motion (supination and pronation) as well as thorough neurovascular exam to rule out acute median nerve neuropathy is crucial to prevent debilitating consequences of missed DRUJ dislocations.
This patient also experienced reduction of sensation of the 2nd and 3rd finger, as the effects of the median nerve injury, which then disappeared after 10 days.
The median nerve was stimulated at two different sites (wrist and elbow), and potentials were obtained from abductor pollicis brevis muscle.
A surgeon makes a small incision in the wrist or palm and cuts through the ligament covering the carpal tunnel, thus releasing pressure on the median nerve. Most patients experience rapid relief of nighttime symptoms and pain and can use their operative hand shortly after surgery; however, full recovery may take several weeks to months.
We recommended surgery to decompress the median nerve and improve the rigidity of flexor tendon.
An anatomicai study of formation of the median nerve. JOCPR.