| 摘要 |
<p>The joint implant (1) has an area between an equator (5) and a pole (4) of a spherical calotte shell with a surface structure. Multiple structural elements (6) are formed by intersecting grooves with opposite pitch, where the grooves have curvatures. The groves are designed such that the number of structural elements on the equator or on latitude near the equator is the same as on a near polar latitude.</p> |
