extensor pollicis longus การใช้

• The 3rd compartment contains extensor pollicis longus.
• If necessary, the extensor pollicis longus and the flexor pollicis longus are reattached to centralize their course.
• It was also identified as a slip of the extensor indicis proprius to the extensor pollicis longus in an Indian cadaver.
• Other muscles in the forearm also innervated by the radial nerve are supinator, extensor pollicis brevis, extensor pollicis longus, and abductor pollicis longus.
• It was reported as an unusual juncturae tendinum, a tendinous connection between tendon of the extensor pollicis longus and tendon of the extensor digitorum communis to the index finger.
• So for example, the " flexor pollicis longus " and " flexor pollicis brevis " oppose the " extensor pollicis longus " and the " extensor pollicis brevis " in the movement of the thumb.
• Weak or absent extensors and / or abductors ( the extensor pollicis brevis tendon, the extensor pollicis longus tendon or, rarely, the abductor pollicis longus tendon ), can cause a disbalance, leading to an abnormal position of the thumb : congenital clasped thumb.
• The tendons of the extensor pollicis longus and extensor pollicis brevis form what is known as the anatomical snuff box ( an indentation on the lateral aspect of the thumb at its base ) The radial artery can be palpated anteriorly at the wrist ( not in the snuffbox ).
• On its upper part is an oblique ridge, which runs from the dorsal end of the radial notch, downward to the dorsal border; the triangular surface above this ridge receives the insertion of the Supinator, the abductor pollicis longus, the extensor pollicis longus, and the extensor indicis proprius.