Aberrant Dual Origin of the Dorsal Scapular Nerve and Its Communication with Long Thoracic Nerve: An Unusual Variation of the Brachial Plexus.

Pre and post-fixed variations at roots of the brachial plexus have been well documented, however little is known about the variations that exist in the branches which arise from the brachial plexus. In this paper, we describe about one such rare variation related to the dorsal scapular and the long thoracic nerve, which are the branches arising from the roots of the brachial plexus. The variation was found during routine dissection.

Morphometry and aberrant morphology of the adult human tricuspid valve leaflets.

The tricuspid valve complex has been studied since the beginning of the twentieth century, and variations in the structural orientation of the tricuspid leaflets has been reported before, as the occurrence of accessory leaflets poses a major problem during surgeries related to the tricuspid valve. In this study, 36 adult formalin-fixed human hearts were analyzed to compare the number, form and size of the tricuspid leaflets. The result shows that in right ventricles, the number of leaflets can vary from the routine three to as many as seven, and the localization of such accessory leaflets of the tricuspid valve differs between specimens.

Study of aortic- common iliac bifurcation and its clinical significance.

Objective: To determine the position of the aortic bifurcation, angle of aortic-common iliac bifurcation in relation to the lumbar vertebra, diameter of distal aorta, length of common iliac, diameter of iliac at bifurcation in cadavers.

Materials And Methods: The present study was done on 25 cadavers (16 males, 9 females) used for the dissection by 1st year MBBS students. The dissections were performed by anterior approach to the lumbar vertebra.

Anatomical variation: median nerve formation - a case vignette.

Variations in the arrangement and distribution of brachial plexus and its branches in the infraclavicular part are common and have been reported by several investigators since the 19th century. These variations are significant for the neurologists, surgeons, anesthetists and the anatomists. During routine anatomical dissection of the right axilla and infraclavicular region of a 45-year-old male cadaver, the medial root of the median nerve was found to receive a supplementary branch from the medial aspect of the terminal portion of the lateral cord of brachial plexus and the branch was passing infront of the axillary artery from lateral to medial side.

Communication between Mylohyoid and Lingual Nerve: An Anatomical Variation.

Variation in the branching pattern of mandibular division of trigeminal nerve has remain one of the commonest cause among the surgeons for not obtaining adequate local anesthesia in routine oral or dental procedure. In this article, we discuss about a case of an unusual communication between mylohyoid and lingual nerve in a 50-year-old female cadaver seen in a routine dissection in medical college. The details of this anatomical variation and its clinical aspects are discussed.