枕骨髁的分型及其意义
Classification of occipital condyles and its implication
目的 研究干燥枕骨髁的解剖形态学特征。 方法 对165例枕骨髁的形状进行分类，并测量其长（前后径）、宽（左右径），厚度及前后径与枕骨大孔正中矢状线的连线的夹角。 结果 枕骨髁的形状可分为6型，两侧椭圆占66.1%（109例）、两侧哑铃占7.9%（13例）、左椭圆右哑铃占6.7%（11例）、左哑铃右椭圆占8.5%（14例）、左椭圆右三角占3.6%（6例）、左三角右椭圆占7.3%（12例）。 结论 枕骨髁存在较多的解剖学形态，以两侧椭圆为主，传统对其认识并不全面。
Objective To study the morphology of the occipital condyles. Methods The occipital condyles were measured and classified in 165 occipital bones. The anteroposterior dimension, mediolateral dimension, the thickness and the angle between the anteroposterior axis and the medial sagittal line of the foramen magnum were measured. Results The mophology of the occipital condyles can be divided into 6 types, namely, elliptical shape in two sides, accounting for 66.1%(109 cases), dumbbell-like shape in two sides, accounting for 7.9%(13 cases), elliptical shape at the left and dumbbell-like in the right, accounting for 6.7%(11 cases), dumbbell-like at the left and elliptical at the right, accounting for 8.5%(14 cases), elliptical shape at the left and triangular shape at the right, accounting for 3.6% (6 cases) triangular shape at the left and elliptical shape at the right, accounting for 7.3% (12 cases). Conclusions The occipital condyles have more anatomical shapes than traditional description With the elliptical shape occupying the majority.
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