" It's the upper condyle of a human femur, " said I.

“这股骨上髁，”我说。

The funny bone sensation is when you actually hit the ulnar nerve, which is pretty superficial right here as it comes around the medial epicondyle of your upper arm bone.

麻筋儿这种感觉当你击中尺神经产生，它非常浅，因为它围绕着你上臂骨内上髁。

When you bend your elbow, your ulnar nerve gets flattened against the medial epicondyle and the protective tissue in the area gets displaced, bringing the nerve especially close to the skin's surface.

当你弯曲，尺神经会扁平地贴于内侧髁上，该区域保护组织发生移位，使尺神经特别接近皮肤表面。