This disclosure relates to planning systems and methods. The planning systems and methods disclosed herein may be utilized for planning orthopaedic procedures to restore functionality to a joint, may include determining a contact area between an implant and a cortical area of an associated bone.

A humeral implant is provided. The implant includes a humeral stem including a plurality of fins. At least one fin comprises a serrated bottom edge. A radial distance between an inner bottom edge of the at least one fin and a centerline of the humeral implant increases along a distal length of extension of the at least one fin. At least the serrated bottom edge of the at least one fin is configured to cut into and compact bone of the metaphysis of a humerus toward relatively denser cancellous bone of a peripheral portion of the humerus when press-fit therein, thereby providing sufficient press-fitting for cementless fixation of the humeral stem into the humerus. Related kits and methods are also provided.

A novel method and instrumentation for insertion of humeral and glenoid total shoulder implant using arthroscopic visualization for bony preparation as well as insertion of components through small incisions. Mini instruments and cannulated guides and reamers are used in order to perform the procedure under direct arthroscopic visualization. For ease of insertion, the components are inserted separately and assembled in situ. Securing the humeral components in place is accomplished with bicortical screw transfixing the central peg of component. Also disclosed are components, parts thereof and instruments used therewith.

A humeral head assembly is provided that includes an articular body and a coupler. The articular body includes a coupling portion disposed on a side of the articular body opposite an articular surface. The coupling portion includes a continuous zone of eccentricity adjustment. The coupler portion optionally includes one or more than one discrete position site. The coupler includes a first portion and a second portion opposite the first portion. The first portion is configured to mate with the coupling portion and the second portion is configured to mate with another member of a joint prosthesis. A coupling portion with the continuous range of eccentricity adjustment can be provided on a bone anchor and the eccentricity of another component can be selected by motion of a coupler, such as a tray for reverse humeral assemblies, along the coupling portion of the anchor.

A prosthesis assembly is provided that includes a base member that has a helical structure and one or more pathways. The helical structure extends between a first end and a second end. The pathway is accessible from the second end and is directed toward the first end through the helical structure. The pathway is located inward of an outer periphery of the helical structure, e.g., adjacent to an inner periphery of the helical structure. The pathway extends in a space between successive portions of the helical structure. The prosthesis assembly includes a locking device that has a support member and an arm that projects away from the support member. The arm is configured to be disposed in the pathway when the support member is disposed adjacent to the second end of the base member. The arm is disposed through bone in the space between successive portions of the helical structure when the prosthesis assembly is implanted.

A solid lubricant for use in a medical device for lubrication of a synovial joint, wherein said lubricant comprises at least one of: a high-molecular weight hyaluronic acid; a crosslinked high-molecular weight hyaluronic acid; and a hyaluronic acid of at least two different high-molecular weights being crosslinked to form a semisolid gel.

A humeral head implant system includes a head component including a first articulating surface, a second bottom surface extending from the first spherical articulating surface, a first cavity extending a first distance into the head component from the second bottom surface, and a second cavity extending into the head component along a cavity axis. The head component defines a head axis extending through a center of the first articulating surface parallel to the cavity axis. A base component defines a slot extending from a first width to a second width. An insert component includes an insert body, a first engagement feature, and a slot engagement feature. The first engagement feature is received in the second cavity along the cavity axis. The insert body has an insert thickness less than the first distance, and the slot engagement feature slides into the slot in a direction transverse to the cavity axis.

Various embodiments disclosed herein relate to stemmed and stemless humeral anchors for use in shoulder arthroplasty procedures. For example, the humeral anchor can include a first end, a second end, and an interior surface extending between the first end and the second end. The interior surface can be disposed about a recess disposed between the first end and the second end. The recess can be configured to secure a coupling of a shoulder articular body directly to the interior surface.

The invention relates to a prosthesis for implantation into a living body in the form of a magnetic artificial joint, in particular an artificial shoulder joint, comprising: a) a first prosthesis member comprising a socket member, b) a second prosthesis member comprising a head member, c) one of the socket member and the head member is at least partially composed as a permanent magnet and the other one of the socket member and the head member is at least partially composed of a magnetic material, or the socket member and the head member are both at least partially composed as a permanent magnet, d) the socket member comprises a recess on a surface side to be coupled with the head member, the recess comprising a concavely contoured contact surface, e) the head member comprises a projection on a surface side to be coupled with the socket member, the projection comprising a convexly contoured contact surface, f) the convexly contoured contact surface is adapted to the concavely contoured contact surface, such that the head member can be coupled in a rotatably jointed manner to the socket member in the nature of a ball/ball-socket joint, g) wherein the convexly contoured contact surface can perform a generally slip-fee rolling motion or a combined slipping and rolling motion on the concavely contoured contact surface in reaction to a change of an angle between the first and the second prosthesis member, and the convexly contoured contact surface can be shifted across the concavely contoured contact surface within a shifting area.

In some embodiments, disclosed is a glenohumeral implant with improved joint mobility. The implant can include a backing component; a neutral non-inclined bearing component on a concave side of the backing component, the bearing component made from a different material than the backing component and configured to touch a glenosphere having a center of rotation.