49 拇指的腕骨掌骨(carpometacarpal)關節為下列何種關節?
(A)軸樞關節(hinge joint)
(B)鞍型關節(saddle joint)
(C)球窩關節(ball-and-socket joint)
(D)平面關節(plane joint)

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統計: A(25), B(249), C(7), D(19), E(0) #1234961