A system is disclosed herein for providing a kinetic assessment and preparation of a prosthetic joint comprising one or more prosthetic components. The system comprises a prosthetic component including sensors and circuitry configured to measure load, position of load on a curved surface, joint stability, range of motion, and impingement. In one embodiment, the system is for a ball and socket joint of a musculoskeletal system. The system further includes a computer having a display configured to graphical display quantitative measurement data to support rapid assimilation of the information. The kinetic assessment measures joint alignment under loading that will be similar to that of a final joint installation. The kinetic assessment can use trial or permanent prosthetic components. Furthermore, adjustments can be made to the applied load magnitude, position of load, and joint alignment by various means to fine-tune an installation.

One embodiment of the present disclosure provides a humeral implant. The humeral implant includes a tray including a body defining a bone facing recess and a liner recess, said bone facing recess including a ring surface and a convex surface, wherein the ring surface has a profile substantially corresponding to a profile of an outer ring of bone in an excision site of a patient; and wherein said convex surface has a profile substantially corresponding to a profile of a concave socket formed in the excision site. The humeral implant also includes a liner including a body defining a load bearing surface and a tray interface surface, said tray interface surface being configured to be at least partially received in said liner recess of said tray such that said implant is coupled to said tray.

The invention relates to a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

A patient-specific guide tool for guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device is disclosed. The guide tool includes a guide portion that includes a guide surface. The guide surface is configured to guide movement of the object toward the glenoid face. Furthermore, the guide tool includes a patient-specific portion that is operably coupled to the glenoid portion. The patient-specific portion includes at least one patient-specific surface that is three-dimensionally contoured and that is configured to nest and closely conform to a corresponding surface of the scapula to thereby position the guide surface at a predetermined position relative to the glenoid face.

This augment insert (200), comprises a coupling member (204) for securing the augment insert to a glenoid component (103) of a shoulder prosthesis (101), and a body (202), comprising a first side (206), configured to bear against a scapular side (107) of the glenoid component when the augment insert is secured to the glenoid component by means of the coupling member; and a second side, opposed to the first side and configured to bear against or be adjacent to a scapula of a patient. According to the invention, the body (202) comprises at least one breakable portion (230), extending from the first side (206) to the second side and configured to be broken off the body. The aperture (234) is provided for accommodating an engaging member (111) of the glenoid component (103), said engaging member protruding from a scapular surface (127) of the scapular side (107) of the glenoid component (103) and being configured for securing the shoulder prosthesis to the scapula.

A glenoidal implant for a shoulder prosthesis includes an articular body having two opposite faces which are an articulation face suitable for cooperating with an articulation head of a humeral implant, and an anchoring face from which at least one anchoring stud protrudes for an anchoring in the glenoid cavity including a main anchoring stud at least partially covered with a porous or rough surface coating promoting an osseointegration. The main anchoring stud is provided internally with a central hole extending along a central axis of symmetry of the main anchoring stud and provided to allow guiding a trephine.

A method of fixating a prosthesis to a glenoid is disclosed. The method includes forming a bore in the glenoid; positioning the prosthesis adjacent the glenoid, where the prosthesis includes a head portion and an anchor extending from a rear surface of the head portion; wherein the anchor includes a first fin and a second fin proximal of the first fin; advancing the anchor into the bore until the first fin is implanted within cancellous bone; and further advancing the anchor in the bore until a proximal-facing surface of the second fin is implanted within cancellous bone and abuts cortical bone.

A glenoid component for securement to a glenoid surface of a scapula comprises a body portion having a first surface adapted to contact the glenoid surface of a scapula and a second surface configured to receive the head portion of a humerus. The glenoid component further includes an anchor peg for penetrating the glenoid surface of the scapula so as to secure the body portion to the glenoid surface of the scapula. The anchor peg includes a cylindrical shaft extending from the first surface of the body portion and a fin secured to and extending outwardly from the cylindrical shaft. The glenoid component further includes a feature that prevents rotation of the glenoid component.

A shoulder prosthesis includes a humeral portion and a scapular portion, each having an osseointegrable component and an articular component. The osseointegrable component in the humeral portion includes a humeral body produced as a semicircular asymmetrical cage having a proximal circular ring base facing the scapular portion and an eccentric distal cylindrical base in opposite position, which are connected by arms having one or more holes for favoring the growth of bone tissue and facilitating anchorage to the bone, the proximal circular ring base being configured to be interchangeably coupled with the articular component for an anatomical prosthesis or a concave insert for a reverse prosthesis. The osseointegrable component in the scapular portion includes a glenoid base-plate of asymmetric form for coupling to an articular component, such as a concave glenoid insert, for an anatomical prosthesis or a glenosphere for a reverse prosthesis.

A method of performing arthroplasty of an anatomical joint for receipt of an implant is disclosed. The method includes developing a preoperative plan, designing a patient specific guide based on the preoperative plan, obtaining the patient specific guide, placing the patient specific guide relative to the identified bone, fixing a pair of pins into the bone to establish an Alpha plane and executing the preoperative plan while referencing the Alpha plane. A desired amount of remaining first bone is determined based on a condition of the anatomical joint and a desired orientation of the implant. The patient specific guide includes a pair of bores defined therein and located in positions to accept a complementary pair of pins. The bores are arranged at locations on the patient specific guide to orient the respective pins in a direction optimized for surgeon access to the first bone and to establish the Alpha plane.