| 摘要 |
<p>Thumb saddle joint (A) comprises two shaft parts (1,2), for implantation, respectively, between the trapezium and the first metacarpal bone. Thumb saddle joint (A) comprises two shaft parts (1,2), for implantation, respectively, between the trapezium and the first metacarpal bone and, detachably connected to (2) and (1), respectively, a receptor part (3) with a spherical cup and a ball joint (5), for insertion in (3) and able to rotate in it during movement of the joint. The bottom edge (11) of (4) grips around the equator of (5).</p> |
