![]() Practical pointsĪs the median artery can be easily detected on ultrasound, it is essential that this be mentioned in the radiologist's report to avoid inadvertent injury to the nerve and artery during surgical release of the transverse carpal ligament. The artery and bifid nerve can be enclosed by a common epineurium. This is Carpel tunnel syndrome as the pressure also exerts on the median nerve, thus producing numbing and tingling on the thumb and 2nd finger. These subdivide into digital nerves that supply opposing sides of the digits. The median nerve may divide into two nerve bundles in the distal forearm and appear as a bifid median nerve in the carpal tunnel.Ī bifid median nerve may be accompanied by an accessory artery, the persistent median artery of the forearm, which lies in between the two nerve bundles. The tendon synovial sheath can also produce excess fluid causing it to swell, even to the point of the tendon becoming stuck in its own sheath within the small space of the carpel tunnel in the wrist. The median nerve usually divides into two or three branches after exiting the distal edge of the transverse carpal ligament that covers the carpal tunnel. The five palmar digital branches supply the skin of the palmar surface of lateral 3 ½ digits including the nail beds and the skin on the dorsum of the distal phalanx. Sensory branches : Two palmar digital branches.Sensory branches: Three palmar digital branches. ![]()
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