女性，73岁，下楼时不慎摔伤右髋部。查体：右下肢短缩，外旋50°畸形，右髋轻度肿胀，有叩痛。
关于正常成人股骨颈解剖，下面哪项是正确的（）
A.颈干角120°～150°，前倾角8°～12°
B.颈干角120°～150°，前倾角12°～15°
C.颈干角120°～150°，前倾角15°～20°
D.颈干角110°～140°，前倾角12°～15°
E.颈干角110°～140°，前倾角15°～20°
参考答案：D
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