| 摘要 |
<p>Joint ball (1) for an artificial hip joint can perform a rotating and pivoting movement in an artificial hip joint socket. At least three grooves (2) running in a circle about the polar axis (P) are introduced into the ball surface with no connecting channels. Preferred Features: The grooves have a depth of up to 2, preferably of 1 mm. The grooves have a round cross-section.</p> |
