Abstract: A spinal prosthesis includes first and second spinal attachment members attachable to first and second spinal structures, respectively. One or more adjustable stopper elements are assembled on one or both of the first and second spinal attachment members. The one or more adjustable stopper elements are formed with a bore through which either of the first and second spinal attachment members is slidable. The one or more adjustable stopper elements include structure that limits relative movement between the one or more adjustable stopper elements and the spinal attachment member on which the one or more adjustable stopper elements are mounted.

Abstract: A surgical tool adaptor includes a distal interface member and a handle. The distal interface member includes a connecting element for connecting to a surgical tool. A K-wire connector is disposed in a central passageway for receiving therethrough a K-wire. The K-wire connector includes a locking element for locking the K-wire. A clutch mechanism is operatively connected to the distal interface member and to the K-wire connector, wherein in a first orientation of the clutch mechanism, the distal interface member and the K-wire connector move together, and in a second orientation of the clutch mechanism, the distal interface member is declutched from the K-wire connector, so that in the first orientation movement of the handle moves the distal interface member and the K-wire connector together, and in the second orientation the distal interface member and the K-wire connector move independently of each other.

Abstract: A spinal prosthesis includes first and second spinal attachment members attachable to first and second spinal structures, respectively. One or more adjustable stopper elements are assembled on one or both of the first and second spinal attachment members. The one or more adjustable stopper elements are formed with a bore through which either of the first and second spinal attachment members is slidable. The one or more adjustable stopper elements include structure that limits relative movement between the one or more adjustable stopper elements and the spinal attachment member on which the one or more adjustable stopper elements are mounted.

Abstract: A surgical tool adaptor (10) includes a distal interface member (12) and a proximal holder (14). The surgical tool adaptor is formed with a lumen (16) through the distal interface member and the proximal holder for passing a guiding element (24), e.g. a K-wire, distally through the distal interface member. The proximal holder includes a locking element (26) for locking the guiding element in the lumen and the distal interface member includes a connecting element (18) for connecting to a surgical tool. The proximal holder is movable relative to the distal interface member so that the proximal holder is movable to a position wherein the guiding element does not protrude proximally out of the proximal holder.

Abstract: A fastener assembly including an existing polyaxial pedicle screw that has been previously installed in a spinal structure, the polyaxial pedicle screw including a polyaxial head to which a prosthetic member is secured, a fastening portion fastened to the polyaxial head over the prosthetic member, and a connector element that extends from the fastening portion, the connector element being connected to another spinal structure.

Abstract: Apparatus including a first spinal prosthetic member that may articulate with a second spinal prosthetic member, the first and second spinal prosthetic members flexing relative to one another about a lateral-medial axis corresponding to a lateral-medial axis of a body, and a flexure limiting member attached to the first and second spinal prosthetic members that limits flexure about the lateral-medial axis.

Abstract: Spinal reamer apparatus including a reference base with mounting provisions for mounting in a region of posterior lumbar spinal structure, a non-straight track fixed to the reference base, and at least one reaming cutter element arranged to move along the track.

Abstract: An article including a spinal prosthesis having a unitary body with at least three attachment points attachable to spinal structure, the unitary body including a flexure assembly positioned between first and second attachment members, wherein flexure of the flexure assembly permits movement of the first attachment member relative to the second attachment member.

Abstract: Apparatus including a first spinal prosthetic member attachable to a first spinal structure, a second spinal prosthetic member attachable to a second spinal structure and articulating with the first spinal prosthetic member to form an articulating assembly, and pedicle screw mounting members extending outwards from the first and second spinal prosthetic members, at least one of the pedicle screw mounting members being movably attached to the first and second spinal prosthetic members such that the at least one pedicle screw mounting member has at least two different attachment orientations with respect to reference axes defined on one of the spinal prosthetic members.

Abstract: An article including a spinal prosthesis having a unitary body with at least three attachment points attachable to spinal structure, the unitary body including a flexure assembly positioned between first and second attachment members, wherein flexure of the flexure assembly permits movement of the first attachment member relative to the second attachment member.