An interbody spinal implant including a body portion having a superior side, an inferior side and a lateral side connecting the superior side and the inferior side, at least one of the superior side or the inferior side comprises a bone contacting surface operable to be coupled to an anatomical structure of a patient; and a plurality of uniform features formed in the bone contacting surface, wherein each uniform feature of the plurality of uniform features comprise a planar peak or a round peak and are dimensioned to increase a surface area of the bone contacting surface to promote bone growth.

The fusion device for fusing a synovial joint of a human or animal patient, in particular a human facet joint, finger joint or toe joint, includes two pin-shaped anchorage portions and arranged therebetween a stabilization portion. The anchorage portions include a thermoplastic material which is liquefiable by mechanical vibration. The stabilization portion preferably has a surface which is equipped for enhancing osseointegration. The anchorage portions have a greater thickness and a greater depth than the stabilization portion. Then the fusion device is pushed between the articular surfaces and mechanical vibration, in particular ultrasonic vibration, is applied to the proximal face of the fusion device. Thereby the liquefiable material is liquefied where in contact with the bone tissue and penetrates into the bone tissue, where after re-solidification it constitutes a positive fit connection between the fusion device and the bone tissue.

A multi-layered prosthetic element comprises a central body (1; 1′) of a substantially truncated conical shape and having a through axial cavity (2; 2′) open at both ends which gives the central body (1; 1′) a ring-shaped cross-section. The central body (1, 1′) comprises an outer portion (110; 110′), made of trabecular metal material, an inner portion (130; 130′), made of trabecular metal material, and an intermediate portion (120; 120′) made of metal material without significant porosity. The outer portion (110; 110′) and the inner portion (130; 130′) are integrally connected to the intermediate portion (120; 120′). The intermediate portion (120; 120′) is configured to mechanically resist to stresses transmitted to the inner portion (130; 130′) on one side and to the outer portion (110; 110′) on the other side.

The disclosure relates to a replacement member for a shoulder joint replacement comprising an attachment face on one side of the member, a concave joint surface on a side of the replacement member opposite to the side of the attachment face, and a circumferential face connecting the attachment face and the joint surface. A portion of the concave joint surface is connected to at least a portion of the circumferential face via a chamfered or rounded edge.

A selectively expanding spine cage has a minimized cross section in its unexpanded state that is smaller than the diameter of the neuroforamen through which it passes in the distracted spine. The cage conformably engages between the endplates of the adjacent vertebrae to effectively distract the anterior disc space, stabilize the motion segments and eliminate pathologic spine motion. Expanding selectively (anteriorly, along the vertical axis of the spine) rather than uniformly, the cage height increases and holds the vertebrae with fixation forces greater than adjacent bone and soft tissue failure forces in natural lordosis. Stability is thus achieved immediately, enabling patient function by eliminating painful motion. The cage shape intends to rest proximate to the anterior column cortices securing the desired spread and fixation, allowing for bone graft in, around, and through the implant for arthrodesis whereas for arthroplasty it fixes to endpoints but cushions the spine naturally.

The invention features 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 bone insert is provided that includes a cap having a convex top surface made from a plurality of cap micro struts, an elongated stem made from a plurality of stem micro struts, and a barrier between the cap and the stem. The stem of the bone insert is inserted into a hole formed in a host bone until the barrier is pressed against the exposed bone. The bone implant can be placed against a small focus contact point on the cap. Liquid cement can be injected into a large center hole in the cap and the cement can flow through the fenestrations between all of the cap micro struts as well as the space between the bone implant and the bone. The cement can cure to create a high strength structure that provides a strong bond between the bone implant and the host bone.

A system for treating dysfunctional SI joints that includes a multi-function bone structure prosthesis adapted to be delivered to and inserted into a dysfunctional SI joint via a posterior approach, the multi-function bone structure prosthesis, when disposed in a dysfunctional SI joint, being adapted to (i) stabilize the dysfunctional SI joint, (ii) induce proliferation, and/or growth and/or remodeling and/or regeneration of osseous tissue and, thereby, healing and arthrodesis of the dysfunctional SI joint, (iii) attenuate pain associated with the dysfunctional SI joint via neurostimulation, and (iv) monitor physiological and/or biomechanical parameters associated with the dysfunctional SI joint via one or more sensor systems.

Prostheses are described for stabilizing dysfunctional sacroiliac (SI) joints. The prostheses are sized and configured to be press-fit into surgically created pilot SI joint openings in dysfunctional SI joint structures. The prostheses have a pontoon shape with opposed elongated partially cylindrical sections connected by a bridge section. The partially cylindrical sections and, in some instances, the bridge section have a porous structure.

An in-situ additive-manufacturing system for growing an implant in-situ for a patient. The system has a multi-nozzle dispensing subsystem and a distal control arm. The multi-nozzle dispensing subsystem in one embodiment includes first and second dispensing nozzles. The first and second nozzles include first and second printing-material delivery channels, respectively. In another embodiment, the in-situ additive-manufacturing system includes a multi-material subsystem having a dispensing nozzle including first and second printing material delivery channels. Controlling computing and robotics componentry are provided. In various aspects, respective storage for first and second printing materials, and one or more pumping structures, are provided.