Various studies have evaluated the multiple insertions of abductor pollicis Longus and have been documented in the literature.
et al (1) in 1988 have seen the APL tendon to divided in three slips, Mehta V et al (5) in (2009) observed the quadruplicate arrangement of abductor pollicis Longus tendon and found 3 slips of APL.
These supernumery slips of abductor pollicis Longus may be utilized for tendon transfer, tendon translocation and tendon interposition arthroplasty.
Variations of the extensor tendons were common in this study, especially for Abductor Pollicis Longus and Extensor Pollicis Brevis.
The accessory tendon of abductor pollicis longus muscle.
Multiple tendons of abductor pollicis Longus, relation between innervations, muscle bellies and number of tendinous slips.
Mehta V, Arora J, Suri RK, Rath G; A rare quadruplicate arrangement of abductor pollicis Longus tendon: Anatomical and clinical relevance clinics 2009;50:64-153-5
The extensor pollicis longus and the abductor pollicis longus attached primarily to the interosseous ligament (81% and 62%, respectively).
In this study, the origins of six deep forearm muscles were quantified: the extensor indicis (EI), extensor pollicis longus (EPL), extensor pollicis brevis (EPB), and abductor pollicis longus (APL) on the dorsal side (Fig.
After passing deep to the abductor pollicis longus and extensor carpi radialis brevis the radial artery reaches the anatomical snuff box where its become a content of it.
The radial artery had normal course in the forearm till the junction between upper two third and lower one third where it turned dorsally and reached the anatomical snuff box and ran superficial to the abductor pollicis longus, extensor carpi radialis brevis and extensor carpi radialis longus along the cephalic vein medially and superficial branch of radial nerve laterally (fig.