| 摘要 |
<p>A cup for the reconstruction of the acetabulum of the hip joint comprises an outer calotte (1) intended for implantation in an acetabular cavity, and an inner portion (17) to be fitted inside said outer calotte. The outer calotte (1) comprises a fissure (7) running from the apex region (5) to the edge (1C) of the calotte, and two tongues (9) are formed on the outer surface (1B) of the calotte (1), on either side of the fissure (7). In order to obtain stability of the cup even without the use of fastening screws: the size of the tongues (9) and the thickness and material of the calotte (1) are such as to produce an elastic deformation of contraction as the calotte is tapped into the acetabular cavity, followed by expansion to the original size when the inner portion (17) is inserted; and said tongues (9) extend radially so that when the calotte (1) has been tapped home into the acetabular cavity and the inner portion (17) has been inserted into said calotte (1), the cup (1, 17) is firmly anchored to the bone. <IMAGE></p> |
