Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.

The present disclosure relates to a guide assembly. The guide assembly includes a guide having a body having a first set of marks and a joint including at least one through hole, the joint configured for sliding along the length of the body; and a first surgical device having a second set of marks, wherein the guide is coupled to the first surgical device and a longitudinal axis of the through hole is co-radial with a mark of the second set of marks when the joint is located at a mark of the first set of marks. Other guides are also disclosed.

A method of implant a knee prosthesis includes forming a bone void at an end of a bone, implanting a void filler in the bone void, and implanting a knee prosthesis onto the end of the bone so that a stem of the knee prosthesis is received by the void filler.

An orthopedic device includes a monolithic patient-specific guide. The patient-specific guide includes a three-dimensional contact surface preoperatively configured from medical scans of a specific patient as a negative surface of a medial portion of a proximal femoral bone of the patient according to a preoperative surgical plan for the patient. The guide also includes a proximal planar surface configured for guiding a resection of a femoral neck of the patient, and a scale formed on the planar surface. The scale is configured for indicating a preoperatively planned femoral version of a femoral stem implant and deviations therefrom.

A method of joint replacement including forming one or more arthroscopy portals adjacent a hip joint that includes, a femur with a femoral head and a pelvis with an acetabulum socket, inserting a hemiarthroplasty cup, having a cup inner surface and a cup outer surface, between a femoral head outer surface of the femoral head and an acetabulum outer surface of the acetabulum socket, wherein at least one of the femoral head outer surface and the acetabulum other surface are unreamed.

A method, and devices for facilitating the method, for shoulder replacement surgery. The method entails establishing a mechanical support in a the anatomical neck plane of the proximal humeral head, fixing a jig to the mechanical support, where the jig supports a drill guide with its axis perpendicular to the anatomical neck plane, adjusting the drill guide it coincide with the axis of the humeral head, drilling a hole through the humeral head for insertion of a shaft which will support and rotate a reaming bit. The reaming bits used to resurface the humeral head and the glenoid fossa are inserted through the back of the patient, through a gap created between two easily separated muscles, rather than through a gap cut through the subscapularis muscle on the front of the joint. A suitable jig is provided to facilitate the method.

Embodiments of the invention include devices and methods for implanting arthroplasty devices. Some embodiments include designs that allow for use of x-ray images as the only images used to fully and accurately preoperatively and intraoperatively size and align arthroplasty device components and prepare all necessary tissue.

Systems and methods are described herein for resurfacing bones, and in particular, for detecting and resurfacing one or more femoroacetabular impingements (FAIs). A FAI resurfacing controller may be used to perform this detecting and resurfacing of FAIs. The FAI resurfacing controller may include a bone model generator to receive bone imaging and to generate a model of at least one osteophyte and of a surface of a native bone surrounding the at least one osteophyte. The FAI resurfacing controller may include an osteophyte identifier to set a virtual 3D boundary surface between native bone surface and the at least one osteophyte. The FAI resurfacing controller may include a resurfacing navigator to generate and output a navigation file. The navigation file may include the model with the 3D boundary surface between native bone surface and the at least one osteophyte.

A method for preparing a bone of a joint of a patient includes mounting a patient-specific reference guide on a bone of a joint of a patient. A connecting portion of the reference guide is coupled to a miniaturized numerically controlled instrument having a housing including a controller, a processor and a tool driver. The patient-specific reference guide has a three-dimensional inner surface preoperatively configured to mirror and mate with a corresponding surface of a bone of a joint of a patient in only one position. The patient-specific reference guide is configured to automatically register the numerically controlled instrument to the patient's bone portion intraoperatively. The cutting tool is guided by the controlled with signals from the processor along a patient-specific tool path determined during the preoperative plan for preparing a portion of the bone.

A device for resecting a femur includes a resection body provided with resection grooves configured to receive a cutting surgical instrument to obtain at least two sections of the femur. The resection body has two separate elements, selectively assembleable to each other in a stable and releasable manner. A first element is a cutting template, having the resection grooves. A second element is a measuring and reference member, having a plurality of measuring and reference holes configured to determine an angular offsetting with respect to a longitudinal axis of the femur, and an axial translation along the longitudinal axis of the femur between the two sections. A releasable holder is provided between the cutting template and the measuring and reference member. The measuring and reference holes are made on the measuring and reference member according to a matrix associated with axial and angular coordinates in ordered rows and columns.