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Wrist extensor Tunnels (Tunnel 1 (-Abductor pollicis longus (APL) …
Wrist extensor Tunnels
Tunnel 1
-Abductor pollicis longus (APL)
-Extensor pollicis brevis (EPB)
Lateral (radial) border of snuff box
along lateral part of radius
Tunnel 2
-Extensor carpi radialis longus (ECRL)
-Extensor carpi radialis brevis (ECRB)
Floor of snuff box (along with scaphoid and trapezium)
along the radius
Tunnel 3
extensor pollicis longus (EPL)
medial (radial) border of snuff box
along the radius
uses the Lister's tubercle as a pulley
Tunnel 4
-Extensor digitorum (ED)
-Extensor indicis (EI)
along the medial part of the radius
Tunnel 5
extensor digiti minimi (EDM)
between the radius and ulna
Tunnel 6
extensor carpi ulnaris ECU
along the lateral part of the ulna