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Volume 13 Issue 7 (July) 2024

Original Articles

Variations in the Position, Number, and Orientation of Nutrient Foramina in Adult Human Clavicles
Archana Srivastava, Alpana Saxena, Rajesh Kashyap, Ajay Singh Rajput

Introduction: The clavicle, uniquely among long bones, is a modified structure positioned horizontally and beneath the skin at the base of the neck. It serves as a supportive structure, keeping the upper limb away from the trunk to enable free movement. It also makes it easier for the axial skeleton to absorb the weight of the upper limb. The clavicle possesses a cylindrical shaft and two distinct ends: the sternal (medial) end and the acromial (lateral) end. Aims & objectives: The objective of this investigation is to detect and comprehend the variations in the position, number, and orientation of the nutrient foramina in the clavicles of adult humans.Materials & Methods: This study utilised 60 adult human clavicles of undisclosed age and gender, sourced from the Department of AnatomyCareer Institute of Medical Sciences and Hospital Lucknow. Each of the bones underwent a macroscopic examination to assess the position, number, and orientation of the nutrient foramina.Results:The nutrient foramen was noted in all clavicles that were examined. Among them, 78% had one nutrient foramen, 13% had two, and 8% had three. In 73% of right clavicles and 83% of left clavicles, one nutrient foramen was discovered. Meanwhile, two nutrient foramina were found in 17% of right clavicles and 10% of left clavicles. In 10% of the right clavicles and 7% of the left, three nutrient foramens were found.Conclusion: The findings of this study lead us to the conclusion that the clavicle generally exhibits a singular nutrient foramen, primarily situated on its posterior surface. The nutrient foramen was most commonly found in the middle third of the bone length, followed by the lateral third, and then the medial third.

 
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