A method for ameliorating joint conditions and diseases and preventing bone hypertrophy can include facilitating cartilage regrowth and preventing bone overgrowth to a damaged bone at a treatment site within a body joint to promote healing. The method can include providing a device having a first section comprising a joint-ward end having an inner surface and an outer surface and fenestrations between the inner and outer surfaces. A second section can include an opposing leading end and a lateral wall extending between the joint-ward end and the leading end. The leading end can be penetrated into the bone to a depth to substantially position: 1) the joint-ward end in a cartilage zone or at a boundary/transition area; and 2) the second section in the bone. Bone overgrowth into the cartilage zone may be prevented within the body joint when the device is positioned at the treatment site.

A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The anchor may include various features to enhance the fixation of the base, including hooks, threads, and/or expandable members that may be transitioned from a contracted insertion condition to an expanded implanted condition once the base is positioned in the bone. The anchor and/or collar may also include additional features to enhance fixation, such as geometries and surface features to enhance fixation to bone. The anchor may include a plurality of chisel slots to facilitate removal of bone during a revision surgery.

Systems, methods and devices for spinal fusion are disclosed. In particular, certain disclosed embodiments are configured to permit the addition of lordosis to a spinal fusion cage after implantation through the use of various expansion mechanisms to spread arms of the spinal fusion cage. Disclosed embodiments may include the use of a threaded wedge to expand the arms, the use of a keel within a series of detents, the use of supplemental fixation screws, and the use of a rotating cam.

A surgical instrument comprises an outer sleeve including an inner surface that defines a cavity. An inner shaft is fixed with the outer sleeve and extends within the cavity. The inner shaft includes a drive engageable in a torque interface with a first mating surface of a bone fastener. An inner sleeve is disposed between the inner shaft and the outer sleeve. The inner sleeve is axially fixed and rotatable relative to the outer sleeve. The inner sleeve includes an element connectable in a connection interface with a second mating surface of the bone fastener. Systems, spinal implants and methods are disclosed.

A medical device for implantation in a hip joint of a human patient is provided. The natural hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped acetabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint. The caput femur has a centrally placed longitudinal extension, extending through the center of the caput and collum femur, aligned with the collum femur, defined as the caput and collum femur center axis. The medical device comprising; an artificial acetabulum, comprising a concave surface towards the centre of the hip joint. The artificial concave acetabulum is adapted to, when implanted, be fixated to the femoral bone of the human patient, and be in movable connection with an artificial caput femur fixated to the pelvic bone of the patient.

Intradiscal implants, systems, and methods thereof. The intradiscal system may include an expandable implant and one or more intradiscal implants. The intradiscal implants may be supplemental to or integrated with the expandable implant. The intradiscal implant may include one or more flexible anchors with a straight configuration and a curved configuration. The anchor may be bendable, for example, using a shape-memory material.

A system and method for providing a spinal implant having a main body, a proximal anchor, a distal anchor, and an internal plunger. The proximal anchor comprises a nut having an internal bore. The distal anchor comprises a plurality of wings having a first closed configuration and a second open configuration. The internal plunger is housed within a central bore of the main body. The distal end of the internal plunger is operatively connected to the first wing and the second wing to selectively move the wings between the first closed configuration and the second open configuration, and vice versa.

A method for fixating an artificial convex caput femur surface to the pelvic bone of a patient, the method comprising the steps of: exposing the acetabulum surface, creating a hole or recess in the pelvic bone from the acetabulum side of the pelvic bone, providing the artificial convex caput femur, comprising an elongated member to the hip joint, inserting said elongated member in said hole, and performing an action on the acetabulum side of the pelvic bone such that the elongated member is structurally changed on the abdominal side of the pelvic bone or inside the pelvic bone.

A two-piece hammertoe compression device is disclosed for the correction of a hammer toe deformity. The two-piece hammertoe compression device provides polyaxial motion between the device components allowing angulation of the joint for fusion. Further, the two-piece hammertoe compression device includes a distal component and a proximal component secured together. The distal component has an externally-threaded anchor with an embedded socket component. The proximal component includes an internally and externally-threaded anchor. Additionally, the embedded socket component has a ball insert component to allow for polyaxial movement and variable angle fixation at the joint.

Improved osseointegration devices and structures, including such structures that can be used in connection with prosthetic limbs. Examples include a self-centering implant/nut configuration, a centering device, a tapered mounting screw hole, a coupling device, and an aiming device. The devices are highly efficacious. For example, they can be secured with minimal residual bone, and may be removed without significant bone destruction.