CS263406B1 - Articular hole for hip joint sculptures - Google Patents

Abstract

The joint socket intended especially for hip joint plastic surgery is provided with a system of holes or pores. On the outer side, the body of the joint socket is provided with irregularities formed, for example, by protrusions or grooves. To further increase the fixation of the joint socket, it is provided on the outer side with transverse protrusions oriented towards the acetabulum bed.

Description

The invention relates to a joint well, in particular a hip joint well. In surgical practice, cementless hip joints are being used for biological and biomechanical reasons in total joint replacements. They are adapted so that their fixation in the pelvic bones is performed either mechanically by means of spikes, protrusions, unevenness and the like or by biological processes where the well is held by a scar that has formed in grooves, unevenness and indentations on the medial surface of the artificial well. This scar is relatively low and therefore the fixation of the well is not sufficient.

The articular wells of the prior art improve the present invention. Its essence lies in the fact that the body of the joint cup is provided with a system of holes or pores. In practice, these openings can also be formed by the pores of the material used. These openings or pores may be formed either directly in the process of manufacturing the material or the openings in the blank may be additionally created by drilling, pressing and the like. The holes or pores of the joint well grow through granulation from the bone marrow spaces and, under the protection of the porous mass, form a firm scar which, in function, i.e. movement, changes into cartilaginous tissue. These tissues have a double meaning. On the one hand, they firmly fix the implant to the bone and shade, and on the other hand they allow the adjacent component to slip partially over organic matter and thus guarantee good joint lubrication. This principle can also be used on all ears that have the possibility of mechaic fixation of the well in the acetabulum bed.

These effects of the invention are further enhanced when the surface of the articular joint is provided with unevenness, for example protrusions or grooves.

The advantage of the articulated joint according to the invention of the alobiological type is, in particular, that lesser amount of alloplastic material is used than in the wells used hitherto.

The joints of the invention may be provided with irregularities on the outer surface, for example by protrusions or grooves, for better fixing thereof. In particular, a particularly good fixation can be achieved by providing the joint cup body with transverse projections directed towards the acetabular bed.

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- 3 granulation outlet into holes or pores in the well after implantation. The granulation then creates fixating scars, up to scar cartilage tissue. Depending on the size of the patient, the joint well is made in several appropriate sizes.

The joint cup according to the invention can be used not only for hip joints but also for other joints.

Claims (3)

Joint cup, in particular for hip sculptures, characterized in that the joint cup body (1) is provided with a set of holes (2). 2. The articular well according to claim 1, characterized in that the body (1) of the articular well is provided on the outside (3) with inequalities (4), for example protrusions or grooves. .. 3. The joint cup according to claims 1 and 2 _f, characterized in that the joint cup body (1) is provided with transverse projections (5) on the outside (3).