An intervertebral implant includes a three-dimensional body and a securing plate. The three-dimensional body includes a front surface and a rear surface. The three-dimensional body further includes a plurality of boreholes for accommodating fixation elements. The intervertebral implant also includes a front plate disposed at the front surface of the three-dimensional body and has a plurality of boreholes. A securing plate can be fastened to the front plate.

Embodiments described include devices and methods for forming a porous polymer material. Devices disclosed and formed using the methods described a spacer for spinal fusion, craniomaxillofacial (CMF) structures, and other structures for tissue implants.

A surgical implant with recesses adapted to capture fixation medium that extravazates during implantation. The implant includes an elongated stem having a distal tip configured for insertion into an implant receiving area of a patient. A collar designed to house recesses for capturing extravazating fixation medium is attached on the stem. The collar can be fixed to the stem by a separable collar-engagement feature or the collar can be fixed to the stem via structures on the stem.

An implant including a cage configured to be implanted between two vertebrae, including a first deployable keel, including a first blade, a first flange extending substantially perpendicularly from a first edge of the first blade, and a second flange extending substantially perpendicularly from a second edge of the first blade, such that the cross-section of the first deployable keel is in the shape of half of an I-beam. The implant further includes a second deployable keel, including a second blade, a third flange extending substantially perpendicularly from a first edge of the second blade, and a fourth flange extending substantially perpendicularly from a second edge of the second blade, such that the cross-section of the second deployable keel is in the shape of half of an I-beam. The first keel is configured to deploy in a superior direction, and the second keel is configured to deploy in an inferior direction.

In some exemplary embodiments, an ankle replacement prosthesis includes a tibial component which provides a convex bearing surface, and a talar component which provides a concave bearing surface configured to interface with the convex bearing surface of the tibial component to provide a joint of the ankle replacement prosthesis. The tibial component is configured to be attached to a patient's tibia and the talar component is configured to be attached to the patient's talus.

A glenoid guide has an upper surface and a lower surface, wherein the lower surface is a patient-specific surface configured as a negative surface of a glenoid face based on a three-dimensional image of a shoulder joint of a patient reconstructed preoperatively from image scans of the shoulder joint of the patient. The glenoid guide includes an anatomic tubular drill guide extending from the upper surface along an anatomic alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid implant into the glenoid face for anatomic shoulder arthroplasty. The glenoid guide includes a reverse tubular drill guide extending from the upper surface along a reverse alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid baseplate into the glenoid face for reverse shoulder arthroplasty.

An implant and method for fusing adjacent spinal vertebrae is disclosed. In an embodiment for a spinal implant of the present invention, the implant includes a spacer body assembly and two retention members. The two retention members each include split fork tangs wherein the tangs of each retention member are simultaneously extendable from the spacer body assembly into the adjacent vertebra. A method of fusing adjacent vertebrae includes the step of inserting an implant between adjacent vertebrae with retention members. The method also includes the step of configuring the retention members wherein a portion of each tang of a retention member simultaneously extends from the implant into one of the adjacent vertebra.

Embodiments described include devices and methods for forming a porous polymer material. Devices disclosed and formed using the methods described a spacer for spinal fusion, craniomaxillofacial (CMF) structures, and other structures for tissue implants.

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand.

An intervertebral implant has a hollow space formed within the implant and accessible through an elongate opening extending through a recessed portion of the side wall, and the hollow space is shaped to receive an engagement portion of a drive shaft of an insertion tool; and the intervertebral implant includes at least two guiding surfaces facing each other and being configured for sliding engagement by a portion of a sleeve of the insertion tool movably holding the drive shaft.