| 摘要 |
<p>A calcar trial includes a stem (10) having a proximal end (20) and a distal end (22), and a body (12). The body (12) is engaged with the stem (10) near the proximal end (20) of the stem (10) and is slidable with respect to the stem (10). A locking mechanism inhibits movement of the body (12) with respect to the stem (10) when desired. A collar (46) extends radially outward from the stem (10) to surround a portion of the body (12). The body (12) and stem (10) are configured so that the diameter of the calcar trial at a point between the collar (46) and the distal end (22) of the stem (10) increases as the body (12) is moved toward the distal end (22) of the stem (10) and decreases as the body (12) is moved away from the distal end (22) of the stem (10). The proximal end (20) of the stem (10) can include opposed notches (62,64) that are egagable by a forked tool (66). A curved distal stem portion (80) can be secured to the distal end (22) of the stem (10).</p> |
