4 results about "Primary bone" patented technology

Disclosed herein are bone anchor assemblies and related methods that can provide improved fixation of a primary bone anchor. A bone anchor assembly (100) includes a base (104) rotatably received within a rod receiving member (106). The base has an annular body with a radially extending portion (116) that includes at least one supplemental bone anchor opening (124) that can receive a supplemental bone anchor to augment fixation of a primary bone anchor of the bone anchor assembly. The base is rotatable relative to the rod receiving member and the primary bone anchor such that the at least one supplemental bone anchor opening can be placed in a desired location for supplemental fixation.

The application discloses a kind of biomimetic radial lamella porous hydroxyapatite bone repair materials, including several axial stacking radial lamella and substructure inside radial lamella, radial lamella is made of several radially inward radiation extending lamellar structure unit, biomimetic porous hydroxyapatite bone repair material is the microstructure morphology with long-range order and radial symmetry;The application also discloses the preparation method of the biomimetic porous hydroxyapatite bone repair material.The biomimetic porous hydroxyapatite bone repair material is designed as the radial lamella of axial stacking, and substructure is designed inside radial lamella, can improve the material interaction efficiency between body fluid, primary bone tissue and implant material, and realize the anisotropy of mechanical property, strengthen bone repair effect, applicable to biological medical field.

This invention provides a technique for more easily and accurately determining the posture of bones in virtual representations of human characters in virtual space or in robots that exist in real space. A posture determination method, in a skeletal model where a primary bone and secondary bones are connected by joints, determines the posture of a secondary bone based on multiple parameters defining the rotation of the secondary bone relative to the primary bone. The posture determination method includes the following steps: determining at least one of the multiple parameters; correcting the multiple parameters based on the determination; and determining the posture of the secondary bone using the corrected multiple parameters. The determination step includes performing a first determination, which determines whether any one of the multiple parameters exceeds the first limit. The first limit is represented by a limitation that at least one parameter would affect limitations related to two or more other parameters. The correction step includes: if the first determination determines that the first limit is exceeded, correcting the multiple parameters using the first limit so that the multiple parameters fall within the range of the first limit.

Devices, systems, instruments, and methods for promoting healing and stability for bone fractures. Large fragment plating systems with a variety of plate styles allow for reduction of the fracture to achieve primary bone healing. Compression and / or distraction may be applied to the bone fragments during the procedure with an external instrument, such as a fracture reduction instrument configured to restore the fracture while implanting the plate.