The present invention relates to a spinal fusion cage which is inserted between vertebral bodies with the lowest height and is height-adjustable in the inserted state, whereby cages having heights within a predetermined range can be replaced by a single cage. Therefore, manufacturers can reduce product groups that need to be produced, and can also reduce product stock. Further, in contrast to the conventional cages having predetermined heights at regular intervals, the height of the inventive cage can be linearly adjusted according to the distance between the vertebral bodies of a patient, and thus a surgery can be performed using the cage adjusted to an optimum height according to the patient's condition.

An expandable intervertebral implant is provided for insertion into an intervertebral space defined by adjacent vertebrae. The expandable intervertebral implant includes a pair of outer sleeve portions and an inner core disposed between the outer sleeve portions. Movement of the inner core relative to the outer sleeve portions causes the outers sleeve portions to deflect away from each other, thereby engaging the expandable intervertebral implant with the vertebrae and adjusting the height of the intervertebral space.

An expandable interspinous process fixation system capable of restoring spinal stability and facilitating fusion. In one embodiment, the expandable interspinous process fixation system includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. Each endplate supporting fixed and/or adjustable spinous process engaging plates.

A joint prosthesis comprises a first component and a second component being connected via a ball-and-socket-joint, wherein the first component comprises two outward spherical sections, at least one of the spherical sections having a projection; the ball-and-socket-joint comprises two gliding blocks each having an inward spherical section and at least one of the gliding blocks comprising a hole, the gliding blocks being attached to the second component, the outward spherical sections are in gliding engagement with the inward spherical sections of the gliding blocks so that the first component is movably attached to the second component; and the projection is inserted into one of the holes of the gliding blocks, so as to limit the mobility of the ball-and-socket-joint.

A humeral implant component connectable to another humeral implant component, the humeral implant component comprising: a longitudinal axis, a first end and a second end, the first end and the second end opposing each other along the longitudinal axis of the humeral implant component, and an interface part for connecting the humeral implant component to the other humeral implant component, wherein the interface part is tapered along the longitudinal axis in a direction from the second end to the first end, the interface part being engageable with a tapered interface part of the other humeral implant component to form a tapered connection between the humeral implant component and the other humeral implant component, wherein the humeral implant component further comprises a through hole extending along the longitudinal axis for locking the tapered connection by a longitudinal fastener.

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.

The present invention includes a hip-off-loading device including a pelvic assembly including a pelvic base plate configured for attachment to a human pelvis; a distraction adjustment mechanism coupled to the pelvic base plate, wherein the distraction adjustment mechanism is lockable, to provide for adjusting the distal distraction of the hip-off-loading device; and at least a portion of a rotation mechanism to provide for internal or external rotation or both, and to provide for non-dynamic interoperative adjustment of abduction, adduction, or both; a link movably coupled to the pelvic assembly to provide for internal or external rotation or both; and a femoral assembly coupled to the link and including a femoral attachment mechanism for attachment to a femur to provide for flexion, extension, or both.

Disclosed is a cage for minimally invasive surgery, the cage including a main body part inserted into a space between a vertebra and an adjacent vertebra, and having lengthwise first and second end parts connected rotatably to each other, and a dilatation induction part provided in an inner space of the main body part, the dilatation induction part being configured to dilate a lengthwise middle part of the main body part by moving to a position at which the first and second end parts of the main body part are connected to each other.

A vertebral body system and method having a polyaxial fastener receiving member, adjustable width plates and a pedicle screw having a pedicle threaded portion and a threaded portion for fastening to the vertebral body.

An expandable intervertebral implant is provided for insertion into an intervertebral space defined by adjacent vertebrae. The expandable intervertebral implant includes a pair of outer sleeve portions and an inner core disposed between the outer sleeve portions. Movement of the inner core relative to the outer sleeve portions causes the outers sleeve portions to deflect away from each other, thereby engaging the expandable intervertebral implant with the vertebrae and adjusting the height of the intervertebral space.