Morphometry of extensors of the thumb with comprehensive review

This study was aimed to evaluate the anatomical variations and morphometry of long extrinsic tendons thumb namely, extensor pollicis longus brevis. Fiftyfive upper limbs formalin embalmed adult cadavers were dissected. The variation in muscle belly, tendon, its course within dorsal wrist compartment mode insertion noted. duplicated 5.5%. Around 25% fused with brevis through hood insert into base distal phalanx. absent 2% tendon also 2%. In case one slips from abductor proximal phalanx instead showed various modes insertion. overall length 121 mm 90 respectively. thickness at proximal, middle level 1.25 mm, 0.76 0.55 respectively, whereas for it 1mm, 0.75 0.53 mm. results obtained this may be helpful hand surgeons management injuries thumb, reconstructive procedures differential diagnosis pain.