A system and method for reducing spondylolisthesis. The system includes a bracket comprising a first opening and a second opening, a first and second rod, and a first and second knob. The system may be placed onto a patient's back, the rods may be inserted through the first opening and the second opening and further into a first vertebral part and a second vertebral part. Tightening of a first knob and a second knob on the first and second rod allow for repositioning of the vertebra. Once repositioned, an interspinous implant may be inserted into the interspinous process space, connecting the vertebrae.

A polyaxial pivot housing for an external fixation system, comprising a collet body having a threaded portion; a spherical member configured to be partially received by a cavity that is formed in the collet body, the spherical member having a threaded post that is configured to attach to a support member of an external fixation frame; and a threaded locking collar that is configured to orientationally lock the threaded post with respect to the external fixation frame by compressing the spherical member into the cavity as the threaded locking collar is mated with the threaded portion of the collet body.

A fixation device comprises a first body having a threaded end, a longitudinal axis, and a bore perpendicular to the longitudinal axis. A second body is received in the bore. The second body has an exterior thread and an interior passage for receiving a pin or wire. The second body has a wire locking device for retaining the pin or wire. An advance nut engages the exterior thread. The advance nut abuts the first body for moving the wire locking device away from the first body when the advance nut is turned, for tensioning the pin or wire.

A clamping device for an external fixation system includes a clamp body including, a first jaw and a second jaw, wherein the first jaw and the second jaw form a groove configured to receive an external fixation component and a bore configured to receive a bone pin. The clamping device includes a locking assembly coupled to the clamp body and configured to change state between at least an unlocked state and a locked state, wherein the external fixation component is configured to translate within the groove and the bone pin is configured to translate within the bore when the locking assembly is in the unlocked state, and the first jaw and the second jaw restrict movement of the external fixation component within the groove and the bore restricts the bone pin from translating within the bore when the locking assembly is in the locked state.

Length-adjustable strut assemblies for external fixation systems, and corresponding external fixation systems, are disclosed. The strut assemblies include an elongate first and second end members, an elongate intermediate member, and first and second adjustment mechanisms. The intermediate member comprises a threaded rod fixedly coupled within an axial cavity thereof, and is rotatably fixed and axially translatably within an axial cavity of the first end member. An end portion of the second end member is received within the axial cavity of the intermediate member, and the second end member comprises an axial cavity threadably coupled with the threaded rod. The first adjustment mechanism is configured to selectively axially fix the intermediate member relative to the first end member. The second adjustment mechanism is configured to selectively rotate the second end member with respect to the threaded rod to axially translate the second end member relative to the intermediate member.

A bone plate kit may be provided for a foot or ankle orthopedic procedure, such as a lapidus procedure. In some examples, the bone plate kit includes a sterile container that holds multiple unicortical bone plate fasteners and one or more bone plates. For example, the kit may contain two bone plates configured to be used together during a tarsal-metatarsal fusion procedure. Each of the two bone plates may be configured to span different regions of a tarsal-metatarsal joint. The unicortical bone plate fasteners can be used to secure the two bone plates to the first metatarsal and medial cuneiform of a patient undergoing a procedure. In some configurations, one of the bone plates is a helical bone plate while the other bone plate may or may not be a helical bone plate.

The present invention presents various embodiments showing combination of a body, rods, platforms and pin (or wire) clamps for the relative fixation of separated bone segment. In some embodiments there is an overall linear arrangement of the assemblies. The rods are threaded and extend lengthwise throughout a substantial portion of the length of the body. Engaged with the threaded rods are one or more moveable platforms, with each moveable platform engaging one or more pin clamps. Preferably each moveable platform includes at least one tapped (generally threaded) hole and at least one smooth through-hole in each moveable platform, so that each moveable platform engages with one threaded rod via the tapped hole but can pass freely along the other threaded rod. Each body also typically bears at least one stationary platform, generally at or near one end of the device.

A clamping system includes a first clamp body including a first jaw, a second jaw, and a first aperture configured to receive a bone pin, the first clamp body is configured to receive a first connector rod between the first jaw and the second jaw, a second clamp body coupled to the first clamp body and including a third jaw, a fourth jaw, and a second aperture configured to receive the bone pin, the second clamp body configured to receive a second connector rod between the third jaw and the fourth jaw, and a securing assembly movable between a first position and a second position, such that moving the securing assembly from the first position to the second position reduces a distance between the first jaw and the second and reduces a distance between the third jaw and the fourth jaw.

The present invention relates to an external fixation system including at least one pair of connected clamp units forming at least one clamp. Each of the clamp units includes: a first component comprising a molded metal, the first component having a first exterior surface having a plurality of voids formed therein to define a plurality of interconnected ribs and a first periphery having at least one first pin groove formed therein; and a second component mated to the first component and including a second periphery having at least one second pin groove formed therein, the at least one first pin groove and at least one second pin groove together forming a fixation pin holder. A fixation pin is held in at least one of the fixation pin holders.

The present invention is about an intra-corporal telescopic osteo-distraction device for locking the length of the bone and for providing axial, torsional and bending stability; an extra-corporal force producing device for producing a force for extension causing a lengthening of the intra-corporal device and the bone; a method for bone lengthening and a bone lengthening arrangement utilizing the devices of the invention.