Abstract: According to an aspect, a preoperative planning method for a high-tibial knee osteotomy procedure is provided. The method includes: a) constructing a 3D model of a patient's bones; b) analyzing the 3D model to select a desired correction angle to apply to the patient's tibia bone to adjust a mechanical axis thereof; c) determining surgical steps required to apply the desired correction angle to the patient's tibia bone; d) designing a patient-specific guide to guide generic surgical tools in performing the surgical steps, the patient-specific guide being designed to conform to the anatomy of the patient's bones based on the 3D model; and e) manufacturing the patient-specific guide designed in step d). A corresponding kit, system and computer readable medium for performing the method are also provided.

Abstract: A patient-specific tool for performing a knee osteotomy procedure on a patient's tibia bone, the patient's tibia bone having a wedge opening defining a top interior surface and a bottom interior surface, the tool comprising: a body including a wedge element sized and shaped to fit in the wedge opening, the wedge element having at least one bone contacting surface having contours complementary in shape to surface contours of the top and bottom interior surfaces of the patient's tibia bone.

Abstract: A surgical kit for performing a bone surgery, the surgical kit comprising an anchor module configured to be secured to a patient's bone with a removable module interface extending outwardly from an operative side of the anchor module; a cutting module configured to be superposable against the patient's bone, the cutting module having a slot extending therethrough along a plane and opening on a cutting module bone interface side and a cutting module operative side, wherein a bone-contacting surface of the anchor module is configured to contact the patient's bone on both sides of the plane; the cutting module being spaced from the anchor module by an open space, with and first and second connecting members connecting the cutting module to the anchor module.

Abstract: According to an aspect, a spacing element for spacing a fixation plate away from a bone to which the fixation plate is secured is provided. The spacing element has a body with a bone interface side and a plate interface side and sidewalls extending thereinbetween, said bone interface side having a bone contacting surface having contours conforming to surface contours of the bone. A corresponding fixation plate, fixation plate kit, and method for designing a patient-specific spacing element are also provided.

Abstract: A fixation plate for securing an opening formed in a bone is provided. The fixation plate includes: a body securable to the bone, the body having a bone interface side and an outward facing side; and a wedge element extending from the bone interface side of the body for inserting into the opening formed in the bone. The wedge element is shaped to conform to contours of the opening formed in the bone. In some embodiments, the wedge element is provided with an evolutive canal. A corresponding method for designing a patient-specific fixation plate is also provided.

Abstract: A surgical guide assembly for performing a knee osteotomy procedure, the assembly comprising: a body for securing to a patient's tibia bone; and a plurality of guide modules removably attachable to the body, each guide module being adapted to receive a corresponding surgical tool and to guide the corresponding surgical tool along a predetermined path during the knee osteotomy procedure.

Abstract: A guide for guiding drill bits to form holes in a bone in a predetermined pattern for receiving fasteners to secure an implant to the bone is provided. The guide includes a guide body having a bone interface side opposite an operative side, the bone interface side having a bone contacting surface engageable with a surface of the bone. The guide also includes a plurality of drill guides extending from the operative side of the guide body for guiding corresponding drill bits, wherein the bone contacting surface of the guide body is configured to substantially conform to surface contours of the bone at a predetermined position on the bone. A method of designing the guide is also provided.

Abstract: A fixation plate for securing an opening formed in a bone is provided. The fixation plate includes: a body securable to the bone, the body having a bone interface side and an outward facing side; and a wedge element extending from the bone interface side of the body for inserting into the opening formed in the bone. The wedge element is shaped to conform to contours of the opening formed in the bone. In some embodiments, the wedge element is provided with an evolutive canal. A corresponding method for designing a patient-specific fixation plate is also provided.

Abstract: A surgical guide assembly for performing a knee osteotomy procedure, the assembly comprising: a body for securing to a patient's tibia bone; and a plurality of guide modules removably attachable to the body, each guide module being adapted to receive a corresponding surgical tool and to guide the corresponding surgical tool along a predetermined path during the knee osteotomy procedure.

Abstract: A guide for guiding drill bits to form holes in a bone in a predetermined pattern for receiving fasteners to secure an implant to the bone is provided. The guide includes a guide body having a bone interface side opposite an operative side, the bone interface side having a bone contacting surface engageable with a surface of the bone. The guide also includes a plurality of drill guides extending from the operative side of the guide body for guiding corresponding drill bits, wherein the bone contacting surface of the guide body is configured to substantially conform to surface contours of the bone at a predetermined position on the bone. A method of designing the guide is also provided.

Abstract: According to an aspect, a preoperative planning method for a high-tibial knee osteotomy procedure is provided. The method includes: a) constructing a 3D model of a patient's bones; b) analyzing the 3D model to select a desired correction angle to apply to the patient's tibia bone to adjust a mechanical axis thereof; c) determining surgical steps required to apply the desired correction angle to the patient's tibia bone; d) designing a patient-specific guide to guide generic surgical tools in performing the surgical steps, the patient-specific guide being designed to conform to the anatomy of the patient's bones based on the 3D model; and e) manufacturing the patient-specific guide designed in step d). A corresponding kit, system and computer readable medium for performing the method are also provided.

Abstract: A tool for spreading and contracting a bone along a cut formed therein as part of a knee osteotomy procedure is provided. The spreading tool includes an upper arm and a lower arm respectively extending along a length between an effort end and a load end, the arms being pivotally connected to one another via a hinge positioned between the effort and load ends; and an anchor interface proximate the load ends for anchoring the load ends of the arms relative to respective first and second fixed positions on the bone. The tool being operable, via rotation of the arms about the hinge, between a closed configuration in which the load ends of the upper and lower arms are proximate one another and an open configuration in which the load ends of the upper and lower arms are spaced apart from one another.

Abstract: A patient-specific tool for performing a knee osteotomy procedure on a patient's tibia bone, the patient's tibia bone having a wedge opening defining a top interior surface and a bottom interior surface, the tool comprising: a body including a wedge element sized and shaped to fit in the wedge opening, the wedge element having at least one bone contacting surface having contours complementary in shape to surface contours of the top and bottom interior surfaces of the patient's tibia bone.