A surgical instrument includes a chassis, a first driving shaft, a first measuring mechanism, a second measuring mechanism, and a first handle. The chassis defines a first channel and a second channel each extending from a proximal end to a distal end. The first measuring mechanism corresponds to rotation in the first channel. The second measuring mechanism corresponds to rotation in the second channel. The first driving shaft is operable to be inserted into the first channel, engaging with the first measuring mechanism. The first driving shaft has an end portion configured to engage and drive a first adjustable feature and/or a second adjustable feature on a work-piece. The handle is operable to be releasably attached to the first driving shaft for applying torque or operable to remove the first driving shaft from the first channel.

An adjustable spinal fusion intervertebral implant is provided that can comprise upper and lower body portions that can each have proximal and distal wedge surf aces disposed at proximal and distal ends thereof. An actuator shaft disposed intermediate the upper and lower body portions can be actuated to cause proximal and distal protrusions to converge towards each other and contact the respective ones of the proximal and distal wedge surfaces. Such contact can thereby transfer the longitudinal movement of the proximal and distal protrusions against the proximal and distal wedge surfaces to cause the separation of the upper and lower body portions, thereby expanding the intervertebral implant. The upper and lower body portions can have side portions that help facilitate linear translational movement of the upper body portion relative to the lower body portion.

Apparatus and methods for replacing a knee joint with an implant prosthesis are described. The method includes distracting the knee, locating the pre-diseased joint line of the knee and referencing cuts to the femur and tibia in the coronal plane relative to the joint line. The method further comprises determining the posterior slope of a cut to the tibia in the sagittal plane such that the gaps between the tibia and femur in extension and flexion are substantially equal. Apparatus for use in the method is described, including a distractor for distracting the joint, a joint level finder for finding the pre-diseased joint line and a flexion gap optimisation device.

An arrangement for the preparation of the proximal surface of the tibia for a tibial component of a prosthetic knee joint including a tibial and femoral stability gap preparation plate having a plurality of user operable height adjustable extension tabs that define a stability gap. A stability gap guide drill plate adapted to act as a guide for a drill bit to drill a series of bore holes into the proximal surface of the tibia to a depth commensurate with the height adjustment of the user operable height adjustable extension tabs and a stability gap router plate adapted to allow a router to complete a final bone resection on the surface of the tibia to rout or cut away bone about each of the series of bore holes so as to provide a stable balanced complete angular movement between a tibial component and a femoral component of the prosthetic knee joint throughout an arc of motion from extension, mid-flexion and flexion.

An adjustable spinal fusion intervertebral implant is provided that can comprise upper and lower body portions that can each have proximal and distal wedge surf aces disposed at proximal and distal ends thereof. An actuator shaft disposed intermediate the upper and lower body portions can be actuated to cause proximal and distal protrusions to converge towards each other and contact the respective ones of the proximal and distal wedge surfaces. Such contact can thereby transfer the longitudinal movement of the proximal and distal protrusions against the proximal and distal wedge surfaces to cause the separation of the upper and lower body portions, thereby expanding the intervertebral implant. The upper and lower body portions can have side portions that help facilitate linear translational movement of the upper body portion relative to the lower body portion.

An intervertebral fusion implant for fusion of adjacent vertebrae, includes a main body having a first leg, a second leg, and an intermediate articulated joint, a pivoting blade is rotatably attached to the first leg, a guiding trough that includes two lateral side walls and two end-faces, one being stationary and one being movable and formed by a traveller movable along the guiding trough to vary its distance to the stationary end-face, the traveller being rotatably attached to the other end of the pivoting blade, wherein an attachment device is provided at the stationary end-face, and a second attachment device is provided at the traveller, which includes an aperture for passage of the holding instrument, wherein a lifting mechanism includes a lifting plate adjustable between retracted and raised states, the lifting plate being spaced from a top surface of the legs and forming a bearing for an adjacent vertebrae end-plate.

An adjustable spinal fusion intervertebral implant is provided that can comprise upper and lower body portions that can each have proximal and distal wedge surf aces disposed at proximal and distal ends thereof. An actuator shaft disposed intermediate the upper and lower body portions can be actuated to cause proximal and distal protrusions to converge towards each other and contact the respective ones of the proximal and distal wedge surfaces. Such contact can thereby transfer the longitudinal movement of the proximal and distal protrusions against the proximal and distal wedge surfaces to cause the separation of the upper and lower body portions, thereby expanding the intervertebral implant. The upper and lower body portions can have side portions that help facilitate linear translational movement of the upper body portion relative to the lower body portion.

A ligament-tensioning device and method for activation of the ligament and/or capsule system in the implantation of a joint implant. The device includes a distal bearing plate for bearing against a distal skeletal part, and also includes first and second proximal bearing plates, each of which partially overlaps the distal bearing plate in a first in-use position, for bearing against a proximal skeletal part. The device further includes means for relative displacement of the proximal bearing plates to increase their spacing from the distal bearing plate. The displacement means includes a scissor-type guide means that supports the respective proximal bearing plate in the ventral-dorsal as well as the medial-lateral parallel position with respect to the distal bearing plate.

A method of implanting a unicompartmental orthopedic knee implant may include positioning a tibial tray onto a resected patient's tibia, the tibial tray including a body having a joint-facing side opposite a bone-facing side, and inserting a tibial anchor guide into the body of the tibial tray, wherein the tibial anchor guide includes a slot. The method may further include forming a tibia channel in the patient's tibia by inserting a cutting device into the slot of the tibial anchor guide, removing the cutting device from the tibial anchor guide, and inserting a fixation element into the tibia channel, wherein compression is created between the bone-facing side of the body of the tibial tray and the tibia when the fixation element is inserted.

A surgical kit and method for milling a bone, the surgical kit including: a rotatable milling tool including a receiving bore with an abutment portion; a positioning pin insertable in the bone for guiding the milling tool along a milling axis and towards the bone, the positioning pin including a pin shaft receivable in the receiving bore and a pin depth determination element, the pin shaft being abuttable against the abutment portion of the milling tool; and a bone milling guide positionable at a predetermined location on the bone for guiding the positioning pin when the positioning pin is inserted into the bone, the bone milling guide including a pin shaft guiding channel for receiving the pin shaft and a guide depth determination element cooperable with the pin depth determination element to provide an indication that the positioning pin is inserted in the bone at a predetermined depth.