[解剖]?膝关节

...? ?? ???膝关节（knee joint）是上下腿骨交汇的中央，两头有半月板，后面有髌骨，髌骨是由两条肌肉拉伸，悬浮在腿骨交汇处之前，十分随便滑动，膝关节由股骨内...

?铰链关节

... 腱tendon 铰链关节knee joint 桡骨radius ...

[机]?肘接

... 肘管 knee 肘接 knee joint 肘接式压力机 knuckle joint press ...

[机]?弯头接合

... 弯头活管接|elbow union 弯头接合|knee joint 弯头接合|toggle joint ...