Bilateral absence of extensor indicis proprius associated with presence of unilateral extensor indicis brevis: a cadaveric study

Sanjay J Fernandes; Amar Singh L; Prakash Shetty; Priya Anusha D�souza

Volume : V, Issue : IX, September - 2016

Bilateral absence of extensor indicis proprius associated with presence of unilateral extensor indicis brevis: a cadaveric study

Sanjay J Fernandes, Amar Singh L, Prakash Shetty, Priya Anusha D Souza

Abstract :

Introduction: Variations in the structures of hand has its surgical importance. A rare anatomical variation is bilateral absence of extensor indicis proprius (EIP) associated with presence of unilateral extensor indicis evis muscle. Aim: A good knowledge of the extensor tendons of hand has a surgical relevance, especially the tendon of EIP because of its usefulness in tendon transfer reconstructive surgeries. Material and Methods: Thirty four (34) upper limb specimens of seventeen (17) adult human cadavers were studied to observe the anatomical variation of EIP and its association with the presence of extensor indicis evis muscle. Results: EIP was found to be absent bilaterally in one incidence associated with unilateral presence of extensor indicis evis muscle in the right hand of the same cadaver. Conclusions: Appreciation of bilateral absence of EIP associated with unilateral presence of extensor indicis evis has its surgical implications during tendon transfer and reconstructive surgeries.