A bone screw comprising a shaft having a wall, the wall including a minor diameter and at least one thread having an external thread form. The thread form including a first portion comprising a crest of the thread form and a second portion extends between a minor diameter of the thread form and the first portion. The first portion having a solid configuration relative to the second portion. In some embodiments, systems, spinal constructs, surgical instruments and methods are disclosed.

A removable wedge for high tibial osteotomy surgery, comprising: a truncated wedge configured to provide a patient specific correction to the weight bearing axis based on 3D data for that patient’s tibia, femur and/or fibula; and an anterior flange configured to locate the partial wedge in a predetermined location on the tibia of that patient. Also a method for pre-operative planning, a method of designing a wedge, a method of printing a wedge a reusable wedge and a prosthetic implant.

An orthopedic guide for preparing a particular patient's bone to receive a prosthesis using a milling tool with a rotating burr comprises a platform having a top surface and a bottom surface adapted to face the patient's bone. The platform defines an elongate milling track that extends through the platform from the top surface to the bottom surface of the platform, the milling track being sized and shaped so as to be adapted to guide the milling tool across the patient's bone with the burr of the milling tool rotating beneath the bottom surface of the platform to be adapted to remove a first bone portion from the patient's bone. A plurality of legs are coupled to the platform and each comprise a referencing end that is contour-matching fabricated as a function of the patient's bone data to be adapted to abut the patient's bone, the referencing ends of the plurality of legs adapted to cooperate to locate the orthopedic guide at a single predetermined location of the patient's bone.

A glenoid device for preparing a shoulder joint of a patient includes a reusable guide holder having a body between an upper surface and a lower surface and a bore passing through the body of the guide holder. The glenoid device also includes a patient-specific glenoid guide having a body with an upper and lower surface. The lower surface of the patient-specific glenoid guide is configured as a negative surface of a glenoid face based on preoperative image scans of the shoulder joint of the patient. The upper face of the patient-specific glenoid guide is configured to be coupled and contact the lower face of the guide holder, such that the bore of the guide holder is aligned along a patient-specific bore through the body of the patient-specific glenoid guide and along a corresponding alignment axis of the patient-specific glenoid guide.

A system for reaming a bone including a guiding wire configured to be attached to the bone; a tubular depth guide configured to cover at least a portion of the guiding wire, the tubular depth guide including a first end configured to abut the bone, and a second end opposite the first end; a reaming device including an elongate recess therein that extends between a reaming tool of the reaming device and an interior of the reaming device, wherein the elongate recess is configured to receive each of the guiding wire and depth guide therein, the elongate recess includes a reduced diameter section that defines a shoulder, and the shoulder is designed to abut the second end of the tubular depth guide to control a depth to which the bone is reamed.

Certain systems, methods, and devices described herein are configured to dynamically model a patient area for surgery and/or other treatment, dynamically identify one or more features and/or characteristics thereon such as the length and/or elasticity of the posterior longitudinal ligament (PLL), dynamically allow modification of the model, dynamically limit and/or assist in modification of the model, and/or dynamically generate guidelines for generation of patient-specific implants and/or treatment kits for a specific patient.

The 4-in-1 cutting jig for femoral finishing comprises a cutting block provided with cutting guides configured to be placed, during use, in contact with the distal resection surface of a femur, at least a first patient-specific made-to-measure module and first coupling means in an obligatory position for coupling the first module with the cutting block, the first module having first reference means configured to position, during use, the cutting block in a predetermined and patient-specific manner relative to the distal resection surface, the first reference means comprising at least a first abutment element having a first surface configured to line up, during use, with a femoral landmark of the patient.

Patient-specific guides for a tibial tubercle osteotomy are provided. The guides include a guide body defining a portion with a bone-engaging surface that conforms as a negative surface to a corresponding surface of a specific patient's tibia, and a guide portion that guides a surgical instrument to a specific location on the specific patient's tibia, wherein the bone-engaging surface and guide portion are configured during a pre-operative planning stage. Methods for performing a tibial tubercle osteotomy with the patient-specific guides are also provided.

A guide tool adapted for removal of damage cartilage and bone and adapted for guiding insert tools during repair of diseased cartilage at an articulating surface of a joint is disclosed. The guide tool includes a guide base having a positioning body and a guide body protruding from the guide base. The guide body includes a height adjustment device and a guide channel with a length. The guide channel extends throughout the guide body and through the height adjustment device with one opening on a cartilage contact surface of the positioning body and one opening on the top of the height adjustment device. The guide body includes a height adjustment device being arranged to enable stepwise adjustment of the length.

Methods, systems, and apparatus, including computer-readable storage media, for surgical alignment using references. In one general aspect, a method includes coupling a guide to a joint, the guide defining an axis and having an outer contour formed to substantially conform to a portion of the joint. The first reference is attached at a fixed position relative to the joint. A positioning system is used to determine a position of the axis relative to the first reference, where the position of the axis is determined based upon the position of the guide while the guide is coupled to the joint. The guide is removed from the joint, and after the guide is removed from the joint, an instrument is positioned relative to the axis based on a position of a second reference relative to the first reference.