The thumb is considered a marvelous piece of machinery, performing many versatile functions. The thumb is more prone for external injuries apart from the other pathologies which comprises about 5% of the emergencies treated. The external injuries can be treated by several reconstructive procedures such as tendon graft, tendon transfer etc., for which the abductor pollicis tendon can be used. Hence it is essential to know the morphometry and anatomical variations of abductor pollicis longus. 28 freshly embalmed human cadavers of both genders, which included 55 upper limbs, were dissected. The length, thickness, variation in the number and insertion of the abductor pollicis longus tendon were noted. The overall length of the abductor pollicis longus tendon was 63.62 ± 13.74 mm. The thickness of the tendon at the proximal, middle and at the distal level of insertion were 1.15 ± 0.56 mm, 1.02 ± 0.49 mm and 0.89 ± 0.48 mm respectively. No significant morphometric differences of length and thickness were observed between genders and between right and left side at distal level, whereas statistically significant difference exist at the proximal and middle level between the left and the right side. The results obtained from this study regarding the variations and morphometry of the abductor pollicis longus may be helpful for the surgeons in the various reconstructive procedures of the hand.
Dhivyalakshmi Gnanasekaran, Raveendranath Veeramani, Aravindhan Karuppusamy, Grace Suganya
Department of Anatomy, Dhanvantri nagar, JIPMER, Puducherry, India 605006
Eur. J. Anat.
ISSN 2340-311X (Online)