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Abstract Objective To discuss the shape，size and position of the main nutrient foramen on the internal surface of the ilium，and analyse its clinical significance with medical imaging. Methods 6 cadaver specimens and 30 adult hip bones were studied.The 6 cadaver specimens included 3 female，and 3 male and the hip bone specimens inlcuded 15 left hip bones and 15 right hip bones.Threedimensional reconstruction images (PACS system) of the pelvis in 100 adults were also studied，inlcuding 50 cases of female and 50 cases of male.There were no statistically significant differences in the size and age of the specimens (P>0.05).The shape，size，and position of the main nutrient foramen on the internal surface of the ilium were observed and measured，and the data was analyzed. Results The diameter of the main nutrient foramen was (1.4±0.3) mm.The main nutrient foramen was (16.1±3.4) mm from the sacroiliac joint and (14.1±4.1) mm from the true pelvic margin，and shape of the foramen was mainly ellipse.There were no statistically significant differences in the size and position of the main nutrient foramen between left and right and between male and female (P>0.05). Conclusion On the lateral side of the sacroiliac joint，the vast majority of the internal surfaces of the iliac bone have main nutrient foramen，mainly elliptical in shape.Knowledge of the position and shape of the main nutrient foramen has great significance for reducing bleeding in pelvic and acetabular surgery.
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Corresponding Authors:
Wang Xin
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