Abstract: An orthopaedic assembly comprises a bone fastener and a head. The bone fastener comprises a shaft with a proximal end and a distal end. The proximal end forms a tip of the bone fastener. A head post is located at the distal end, for mounting a separate head on the bone fastener. The head and the head post are each provided with a respective part of a mount for mounting the head on the head post. The mount comprises an opening in a first lockable part in which a second lockable part of the mount can be admitted. The head is mountable on the head post by moving the head towards the head post and thereby sliding the first lockable part over the second lockable part in a sliding direction, to admit the second lockable part in the opening. The head is lockable in position on the head once the second lockable part is admitted to a predetermined depth into the opening by turning the first lockable part around an axis extending in the sliding direction.

Abstract: An expandable implant (1) implantable in an intra-osseous cavity of a bone comprises an anchoring body (2) having a distal end and a proximal end for anchoring the distal end relative to a part of the bone outside the cavity. An expandable part (4), for in the intra-osseous cavity, is fixated to the anchoring body, e.g. at the distal end. The expandable part comprises a movable piece with a load supporting surface for supporting a wall of the cavity against a load acting on the bone. The movable piece is movable away from the anchoring body in a direction of expansion perpendicular to the longitudinal direction, to bring the load supporting surface from an initial position in a non-expanded state to an expanded position in a expanded state in which the load supporting surface abuts to the wall. A driving part (70) is movable relative to the proximal end of the anchoring body.

Abstract: An implantable, expandable bone support device for a bone, such as a vertebra. The device has a pre-shaped bulk block for filling up an intra-osseous implant cavity of the bone. The pre-shaped bulk block is movable to project in an expanded state of the device out relative to a non-expanded shape of the device. The block comprises a load supporting surface for supporting a load acting on the bone, and a fixation interface for interfacing with a pre-shaped fixation which when interfacing holds the pre-shaped block in the expanded state of the bone support device in position, against the load, and inhibits the device from collapsing from the expanded state into the non-expanded state. An actuator interface allows engaging with an actuator for actuating the movement of the bulk blocks along the pre-defined path. The device comprises a guide defining the pre-defined path along which the bulk block is movable.

Abstract: An implant for in-vivo implantation which comprises an assembly of two or more constructive elements (3,4) which are movable relative to each other. Each constructive element (3,4) is partly or completely porous and comprises a porous part (5,6) with a matrix (7,8) of open cells (51,61). A first matrix (7) of the first element (3) comprises a first overlapping part (50) with a form-closed connection to a second overlapping part (60) of a second matrix (8) of the second of the constructive elements (4) through which the first overlapping part extends. The overlapping parts (50,60) are movable relative to each other to change a combined shape of the overlapping parts.