Abstract: The invention relates to a joint socket (1) for a hip-joint endoprosthesis (2), wherein the joint socket (1) comprises ageing-resistant materials and forms a low-abrasion sliding pair together with a joint head (3). The joint socket (1) provides an implant surface (4), which is formed from a material with a porous surface, wherein the isoelastic structure of the joint socket (1) according to the invention and the joint head (3) achieves a physiological load transfer by means of specially designed materials, of which the modulus of elasticity is adapted to the values of a spongy bone material.

Abstract: A device for implantation in a bone is disclosed, wherein this device is a component part of a system, for controlled loading of the reconstructure anterior crucual ligament (ACL) of a knee joint. The device may comprise an outer body, which is provided with a damping mechanism between a distal end and a proximal end. Arranged inside the damping mechanism there is at least one securing element for fixing at least one thread which, at the proximal end of the device, is guided out from the outer body through an aperture in the base.

Abstract: The invention relates to an intervertebral disk implant (1) which is used to implant between two vertebrae (2), comprising at least two components (3,4; 13,14,15) which form at least one sliding pair and which are made of a ceramic material. The at least two ceramic components (3,4; 13,14,15) are arranged in a covering (5).

Abstract: A ligament tensing device (1) for activating a ligament and/or capsule system during implantation of a joint implant, comprising a base body (2) having a first lug (3) with a distal bearing surface (4) resting upon a first bone, and a second lug (7) resting upon a second bone with a proximal bearing surface (10) thereof. The second lug (7) is displaceable in an anterior-posterior and/or medial-lateral direction parallel to the first lug (3).

Abstract: A shoulder prosthesis comprising a socket and a condyle that cooperates with the socket. The condyle also cooperates with a base plate facing the scapula similar to a clamping connection. The condyle is plugged onto the base plate by means of a receptacle that is embodied on the condyle. The base plate can be anchored to the glenoid fossa of the scapula with the aid of two peg-type protrusions.

Abstract: A shoulder prosthesis comprising a socket and a condyle that cooperates with the socket. The condyle also cooperates with a base plate facing the scapula similar to a clamping connection, the condyle being plugged onto the base plate by means of a receptacle that is embodied on the condyle and is concentric to the center line thereof. the base plate can be anchored to the glenoid fossa of the scapula with the aid of a protrusion located on the base plate as well as anchoring elements which can be accommodated within sleeves provided on the base plate. According to the invention, the base plate has a dome-shaped bottom surface that is to rest against the glenoid fossa of the scapula, the center of the dome shape being eccentric to the center line of the base plate.

Abstract: A device for implanting marking bodies into a bone is provided in the form of forceps whereby comprising a medial forceps handle, a lateral forceps handle, a medial forceps limb, a lateral forceps limb, and a spring element. The spring element acts upon the medial forceps handle and upon the lateral forceps handle, and the medial forceps limb and the lateral forceps limb can be displaced parallel relative to one another by means of a four-bar linkage for ejecting the marking bodies. A magazine containing the marking bodies can be slid onto a magazine holding fixture situated on the lateral forceps limb.

Abstract: The precursor is used for the preparation of a pasty bone replacement material by admixture of a liquid. The precursor comprises a biocompatible substance swellable by the action of water or of an aqueous solution thereby forming a hydrogel; and solid particles made of a substance which is suitable as a bone replacement material. The swellable substance is in the form of discrete particles having a mean dimension in the range of 18 ?m to 2000 ?m.

Abstract: The solid precursor is used for the preparation of a pasty bone replacement material by admixture of a liquid. The precursor comprises calcium-containing ceramic particles and a hydrogel or a substance which can be swelled into a hydrogel; whereby said precursor has been obtained by wet autoclaving and subsequent drying.

Abstract: A device for implanting marking bodies into a bone is provided in the form of forceps whereby comprising a medial forceps handle, a lateral forceps handle, a medial forceps limb, a lateral forceps limb, and a spring element. The spring element acts upon the medial forceps handle and upon the lateral forceps handle, and the medial forceps limb and the lateral forceps limb can be displaced parallel relative to one another by means of a four-bar linkage for ejecting the marking bodies. A magazine containing the marking bodies can be slid onto a magazine holding fixture situated on the lateral forceps limb.

Abstract: The shoulder prosthesis has a stem (10), a ball head (20) and a middle section (30) that can be attached to the proximal end (12) of the stem (10) and to which the ball head (50) can be attached. The middle section (30) can be clamped to an attachment element (20) that is adjustable in a first direction at the proximal end (12) of the stem (10), the first direction lying in the resection plane or parallel thereto. The first direction generally runs approximately medially-laterally. The attachment element (20) can be displaceable on the stem (10) by means of a dovetail guide (15) or guided displaceable in a guide bore in the stem (10). The middle section can be clamped against the attachment element (20), whereby the attachment element (20) and the middle section (30) can be fixed.

Abstract: A shaft for an articulation endoprosthesis has a metallic core (1), a proximally connected neck part (10) and an envelope (2) made of a non-metallic, elastic material that distally surrounds the core. Adherence between the core (1) and the envelope is ensured by a form fit and/or by a frictional connection. The non-metallic material of the envelope has a modulus of elasticity between 500 and 10,000 N/mm.sup.2. The envelope is provided with an additional superficial layer (3) made of biocompatible material having thickness of less that 600 .mu.m and a higher surface hardness than the envelope (2).