Bone transplant made of a cortical bone substance having a screw shank and a screw head for introducing a screwing-in torque. Both the screw shank and the screw head are provided with an external thread, in which at least the external thread of the screw shank is a multi-start thread. Due to the design, on the one hand a certain stroke can be achieved with fewer revolutions or in a shorter time, whereby the screwing-in behavior is improved and the tendon tissue is protected. On the other hand, the use of multiple threads provides a high surface area for the tendon tissue to grow on the tendon anchor, which improves fixation of the tendon and increases rotational stability. The bone transplant according to the invention thus ensures good fixation of the tendon and can be implanted quickly.

A subtalar implant that can be expanded/contracted in vivo to adjust the amount of distraction applied to the subtalar joint of a patient and a related insertion device are disclosed herein. More specifically, the subtalar implant can expand both radially and also in the angle between the proximal and distal end of the outer component of the implant. The implant comprises an internal component that allows for the distal or proximal ends of the implant to be manipulated via the insertion device. The subtalar implant and the related insertion device permit a surgeon to adjust the implant construct to suit a particular patient.

Bone implants, including methods of use and assembly. The bone implants, which are optionally composite implants, generally include a distal anchoring region and a growth region that is proximal to the distal anchoring region. The distal anchoring region can have one or more distal surface features that adapt the distal anchoring region for anchoring into iliac bone. The growth region can have one or more growth features that adapt the growth region to facilitate at least one of bony on-growth, in-growth, or through-growth. The implants may be positioned along a posterior sacral alar-iliac (“SAI”) trajectory. The implants may be coupled to one or more bone stabilizing constructs, such as rod elements thereof.

A fusion device assembly for fusion of a joint, including a first screw portion, including a first distal end, a first proximal end, a first radially outward facing surface, and a first hole, a second screw portion, including a second distal end, a second proximal end, and a second radially outward facing surface, and a section, including a first end slidably engaged with the first hole, a second end non-rotatably secured to the second distal end, and a third radially outward facing surface.

A hard-tissue implant is provided. The implant includes a shaft, a surface of the shaft, pillars for contacting a hard tissue, slots to be occupied by the hard tissue, and a thread disposed helically along the shaft, extending radially from the shaft, and having a plurality of grooves oriented transversely with respect to the thread that define a series of thread segments and thread gaps along the thread. The implant has a Young's modulus of elasticity of at least 3 GPa and a ratio of (i) the sum of the volumes of the slots and the thread gaps to (ii) the sum of the volumes of the pillars and the thread segments and the volumes of the slots and the thread gaps of 0.40:1 to 0.90:1. Also provided is a method of use of the implant for fusion of two or more bones in an individual in need thereof.

Bone implants, including methods of use and assembly. The bone implants, which are optionally composite implants, generally include a distal anchoring region and a growth region that is proximal to the distal anchoring region. The distal anchoring region can have one or more distal surface features that adapt the distal anchoring region for anchoring into iliac bone. The growth region can have one or more growth features that adapt the growth region to facilitate at least one of bony on-growth, in-growth, or through-growth. The implants may be positioned along a posterior sacral alar-iliac (SAI) trajectory. The implants may be coupled to one or more bone stabilizing constructs, such as rod elements thereof.

A beam acts as an implantable spinal support structure. The beam is generally cylindrical in form with two semi-cylindrical shells defining a cylindrical contour of the beam and with a web passing through a central axis of the beam and joining midpoints of the two shells together. The shells preferably have threads on an outer surface thereof to engage bone within a cylindrical hole passing through two adjacent vertebrae spanning a disk space, for support of the vertebrae such as for fusion thereof together. One end of the beam can be tapered to maximize structural support for the vertebrae. This tapered end can be provided as a separate extension removably attachable to other portions of the beam in one embodiment. A method for implantation is also disclosed where the beam is implanted at an angle to the spinal axis and intersecting a disk space between adjacent vertebrae.

A subtalar joint implant system that includes a first implant component and a second implant component is disclosed herein. An alternative embodiment of a subtalar joint implant system is disclosed and includes a first component that has threads disposed on at least a portion of an exterior surface of the first component and a second component having threads disposed on at least a portion of the exterior surface of the second component. The first and second components are each configured to couple with at least a portion of a talus and a calcaneum of a patient with the first component being configured to couple with at least a portion of a posterior facet of the calcaneum of the patient and the second component being configured to couple with at least a portion of a middle facet of the calcaneum of the patient.

An extra-articular stabilization implant is disclosed. The extra-articular stabilization implant comprises: a body portion defining a longitudinal axis and having a proximal end and a distal end; a first helical thread formed on the body portion, the first helical thread having a first major diameter and a first minor diameter; a second helical thread formed on the body portion, the second helical thread having a second major diameter and a second minor diameter; and a head portion disposed at the proximal end of the body portion, the head portion having a driver receiving portion.

A subtalar implant that can be expanded/contracted in vivo to adjust the amount of distraction applied to the subtalar joint of a patient and a related insertion device are disclosed herein. More specifically, the subtalar implant can expand both radially and also in the angle between the proximal and distal end of the outer component of the implant. The implant comprises an internal component that allows for the distal or proximal ends of the implant to be manipulated via the insertion device. The subtalar implant and the related insertion device permit a surgeon to adjust the implant construct to suit a particular patient.