| 摘要 |
This prosthesis essentially has a trochlea element (11) shaped like a sector of a circular ring segment which is fixed in place of and at the site of the damaged trochlea (6) located between the condyles and which presents a circular support surface to the knee-cap (5) of convex longitudinal section and concave cross-section, the sector extending through an arched angle (13) between 60 and 190 DEG , whereas the segment is assymetrical relative to the equatorial plane (12) of the circular ring, such that one of its edges, which corresponds to the lateral edge of the trochlea (6), is further remote from this equatorial plane than the opposite, other edge which corresponds to the medial edge of the trochlea (6). <IMAGE>
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