The invention provides the internal fixation system of spine posterior screw-plate, including the vertebral plate. The vertebral plate is curved, its internal cambered surface directly faces the spine, and external cambered surface of vertebral plate is equipped with a reinforcing rib. The vertebral plate is set with the perforative injecting hole. One side of vertebral plate is fixed with a fixed connecting plate, and the end of the fixed connecting plate away from the vertebral plate is set with the first regulating hole. The bottom of the fixed connecting plate on two sides of the first regulating hole is set with n-shaped caulking groove.

A system for the amelioration of a recess (56) is disclosed, particularly of a recess in a porous, perforate material having cavities freed by the recess, said system comprising an element (2) for generating or coupling in mechanical energy, and a cylindrical collar (4, 40) having a central recess (44,45) for receiving a guide pin (8), wherein the guide pin (8), having a cannulation (35), is provided to be inserted substantially as far as the bottom of the recess (56) under positioning using a wire (52) before mechanical energy is applied, wherein the guide pin (8), in the area of the end thereof directed toward the bottom of the recess (56), is surrounded by an amelioration sleeve (7), wherein the external cylindrical jacket surface of the amelioration sleeve (7) has substantially the same external diameter as the collar (4, 40), and wherein the guide pin (8) is received movably in the central recess (44,45) such that, when mechanical energy is applied, the collar (4,40) can be moved relative to the guide pin (8) in the direction toward the bottom of the recess (8) while liquefying and laterally and/or longitudinally displacing the material of the amelioration sleeve (7).

The invention relates to the field of bioresorbable or non-bioresorbable bone substitutes to be implanted in humans in order to reconstitute the bone supply by replacing lost bone substance. More particularly, the invention concerns a device that is simple to manufacture and use and comprises a syringe provided with a single-use dose of a polymer which is fluid at the injection temperature while being solid and durable at body temperature.

A bone cement delivery system includes a plunger configured to selectively displace bone cement from a cement reservoir through an exit port. Additionally, the system includes a flow diverter comprising a diverter inlet, a first diverter outlet, and a second diverter outlet. The system also includes a cannula coupler configured for connection to a delivery cannula for directing the bone cement to a target site, and a drool accumulator defining a drool volume for receiving residual bone cement. The flow diverter includes a valve arranged for selective movement between a first configuration where fluid communication is established between the cement reservoir and the drool volume; and where fluid communication is interrupted between the cement reservoir and the cannula coupler; and a second configuration where fluid communication is established between the cement reservoir and the cannula coupler; and where fluid communication is interrupted between the cement reservoir and the drool volume.

Described herein is an intramedullary femoral nail implant. The implant can be more easily converted to a load bearing hip replacement. Fixation of the intramedullary nail may be enhanced by injection of cement. Disclosed devices may be preferable to other types of intramedullary nails at the time of the first procedure given their characteristics of improved fixation, stability, and flexibility for potential conversion via a less complex operation.

The invention relates to 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 system for the amelioration of a recess (56) in a porous material, said system comprising an element (2) for coupling in mechanical energy, and a cylindrical collar (4, 40) having a central recess (44,45) for a guide pin (8), wherein the pin (8), having a cannulation (35), is provided to be inserted as far as the bottom of the recess (56) using a wire (52), wherein the pin (8) is surrounded by an amelioration sleeve (7), wherein the external cylindrical jacket surface of the sleeve (7) has substantially the same external diameter as the collar (4, 40), and wherein the pin (8) is received movably in the central recess (44,45) such that, when mechanical energy is applied, the collar (4,40) can be moved relative to the guide pin (8) in the direction toward the bottom of the recess (8) while liquefying and displacing the material of the sleeve (7).

A method of using a robotic guidance system for performing surgery on a spine is provided. The method includes utilizing a computerized tomographic scan image of a location on a spinal column of a patient, such that the computerized tomographic scan image is connected to a computer and visible on a monitor connected to the computer. The method also includes attaching a coupling component to the spinal column of the patient, coupling a marker to the coupling component, and imaging, with a fluoroscope, the view of the spinal column of the patient, wherein the fluoroscope image is transmitted to the computer and visible on the monitor and the at marker is clearly visible in the fluoroscope image. The method also includes positioning a cannula, with a robotic mechanism, to a first position relative to a vertebra in the spinal column of the patient, drilling a passage through the cannula into bone of the vertebra in the spinal column of the patient, inserting a guidewire through the cannula into the passage in the bone of the vertebra in the spinal column of the patient, and positioning a screw into the bone of the vertebra in the spinal column of the patient.

A tool for delivery and/or compaction of bone graft material includes a cannula with an inner lumen extending along a longitudinal axis from a hopper end of the cannula to a delivery tip of the cannula. A hopper with an internal volume for storing bone graft material is connected to the hopper end of the cannula with the internal volume of the hopper in communication with the inner lumen of the cannula for delivery of bone graft material from the hopper to the delivery tip of the cannula. An output shaft within the inner lumen extends along the longitudinal axis. The output shaft includes a helical screw thread extending radially outward from the output shaft toward an inner surface of the cannula. An actuator is connected to the hopper and to the output shaft to drive the output shaft rotationally relative to the hopper and to the cannula.

The embodiments provide provides devices, instruments, and associated methods for treating joint pain. A joint is evaluated using magnetic resonance imaging to detect any defects in the subchondral bone. For example, using T2-weighted MRI images, bone marrow lesions or edemas can be identified, and using T1-weighted MRI images, associated regions of sclerotic bone adjacent to the bone marrow lesion can be identified. The treatment method may involve introducing a bone void filler material at the site to address the bone marrow lesion or edema, and/or drilling and inserting an implant to address the sclerotic bone, bone marrow lesion or edema, and insufficiency or stress fractures. An access path is mapped to a location in the subchondral region where the insufficiency fracture resides. The access path attempts to preserve an articular surface of the joint. A reinforcing member that stabilizes the insufficiency fracture is then implanted via the access path.