Background: The humerus bone is one of the best long bones to measure the height of an unknown person's body. Objective: This study aims to see the relationship between height and length of humerus bones and to obtain a linear regression equation on height and length of humerus bones in Tamil tribes in Medan City. Material and Methods: This study is a descriptive analysis with an approach using the cross-sectional method in September – October 2024 at Bodhi Gaya Vihara Medan. The research subjects were 100 respondents, 50 Tamil men and 50 women, who met the inclusion and exclusion criteria. Height will be measured using microtoise, and humerus bone length using vernier caliper (tricle brand, model 0-600mm, Shanghai, China). Results: Data analysis obtained a strong correlation in male data with a correlation coefficient value of r = 0.660 (<0.001) in the right humerus and r = 0.718 (<0.001) in the left humerus. In the data of Tamil women, a strong correlation was obtained between the value of the correlation coefficient r = 0.574 (0.001) in the right humerus and r = 0.546 (0.001) in the left humerus. In the data, a simple linear regression equation is also obtained so that height estimation can be estimated using the length of the humerus bone. Conclusion: There is a correlation between humerus bone length and height in Tamil adult men and women. Thus, a formula for estimating the height of the humerus bone length in Tamil adult men and women was obtained.
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