Introduction: The middle ear ossicles form a semi rigid chain in the middle of the ear for conduction and amplification of sound waves from the tympanic membrane to the inner ear. Although, our knowledge of the ear ossicles dates back to the 15 th century, and various studies have been carried out on their morphometry, morphology, anomalies, embryology, function and structure throughout the world, information about the morphology of middle ear ossicles is meagre in Indian subjects.
Aim:To find out the morphological variations of middle ear ossicles of right and left sides.
Background: Bicipital groove (BG) is defined as an indentation present on the anterior aspect of upper end of humerus. Morphometry of BG is known to play important role in maintaining the stability and function of shoulder joint during multidirectional biomechanical movement of arms. Therefore, knowledge regarding detailed osseous anatomy of BG is essential for better understanding of variety of causes of shoulder pain and disability. Aim: The goal of the present study was to describe the detailed morphometric features of BG in dry humerii of West Bengal population and also to correlate its clinical implications through literature review. Materials and Methods: The study was undertaken on 107 dry human humerii of unknown age and sex without any gross pathology collected from different medical colleges of West Bengal. Total length, antero-posterior and transverse width of humerii at surgical neck along with length, width, depth, medial wall and opening angles of BG were measured. Data obtained were statistically analyzed. Finally, results were compared with other similar type of studies.
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