7 results about "GLENOID FOSSA PROSTHESIS" patented technology

A method comprises outputting a user interface of a surgical planning system, wherein the user interface represents a patient-specific glenoid prosthesis at a planned implantation position on a scapula of a patient; and determining a bone-facing surface of the patient-specific glenoid prosthesis having a native-facing portion and a modified-facing portion, wherein the native-facing portion is shaped to conform to an unmodified bone surface of the scapula and the modified-facing portion is shaped to conform to a modified bone surface of the scapula.

The embodiment of the invention provides a glenoid fossa prosthesis, a glenoid fossa prosthesis model generation method, a glenoid fossa prosthesis model generation device, computing equipment and a computer program product. The method comprises the following steps: acquiring mandibular movement data and skeleton image data of a test object; establishing a skeleton model of the test object according to the skeleton image data; carrying out motion loading on the skeleton model according to the mandibular motion data; performing motion simulation based on the skeleton model after motion loading to generate a mandibular motion envelope surface; determining parameters of a glenoid fossa prosthesis model according to the mandibular movement envelope surface, and generating the glenoid fossa prosthesis model, namely, constructing a kinematics model based on temporal-mandibular joint movement data of a normal person with extrawings attached, and determining the mandibular movement envelope surface based on a condylar process vertex; according to the articular fossa prosthesis model of the artificial temporomandibular joint prosthesis with the extrawing muscle attachment, the technical problem that the articular fossa prosthesis cannot adapt to the physiological movement range of the artificial mandibular branch prosthesis in the related technology is solved.

The invention discloses a glenoid prosthesis baseplate, having a surface (1) for an artificial socket insert, an opposite fitting surface (2), and holes (2f) passing through the surfaces (1, 2), and feet (3) on the surface (1) for the artificial socket insert for fixing the artificial socket insert. The baseplate has at least two mounting tabs (4) connected to the edge (P) of the baseplate, and holes (4a) passing through each mounting tab (4), and the prosthesis baseplate is provided with at least two through holes (2f) passing through both the surface (1) for the artificial socket insert and the fitting surface (2), and each hole (2f) being in alignment with the axis of a through hole (4a) of the mounting tab (4).

Various apparatus and methods for implanting glenoid prostheses are disclosed. In various embodiments, a kit for shoulder surgery can include a partial reaming guide having a patient-matched surface shaped to conform to a scapula of a patient, the partial reaming guide configured to limit glenoid reaming about a reaming axis to only a portion of a glenoid; and an anchor peg channel guide having a patient-matched surface shaped to conform to a portion of the glenoid, the anchor peg channel guide having a channel offset from the reaming axis.

The utility model relates to a glenoid cavity navigator for reverse type full shoulder joint replacement. The glenoid cavity navigator comprises a main shaft, a handle, a front locking nut, a rear locking nut and five positioning supports. Scales on the surface of the spindle are used for adjusting the position of the positioning bracket; a Kirschner wire is inserted into the central duct to position the prosthesis; the handle accords with ergonomics and is antiskid, and is detachably connected with one end of the main shaft through a rear locking nut; the positioning supports are different in model and accord with the glenoid cavity anatomical structure, the ends of the positioning supports are arranged between the handle and the main shaft and are screwed and locked through rotation of the front locking nut, and marks are arranged on the surfaces of the positioning supports. Compared with the prior art, the navigator adjusts the scales of the positioning support according to the plan before the operation, is fixed to the glenoid cavity during the operation, guides the follow-up operation, ensures that the implant angle of the prosthesis is consistent with the plan before the operation, effectively solves the problem that the implant angle of the glenoid cavity prosthesis is accurately controlled, reduces the risk of complications, and improves the success rate and efficiency of the operation; the postoperative shoulder function recovery of the patient is ensured.

This application relates to the field of orthopedic artificial joint design and manufacturing technology, and in particular to a metal-ceramic total shoulder joint prosthesis system and its preparation method. The metal-ceramic total shoulder joint prosthesis system includes a humeral stem prosthesis, a tapered adapter prosthesis, a humeral head prosthesis, and a glenoid fossa prosthesis connected sequentially. The humeral head prosthesis and the tapered adapter prosthesis are both formed using 3D zirconium-niobium metal printing or forging. The humeral stem prosthesis and the glenoid fossa prosthesis are integrally formed using 3D printed zirconium-niobium alloy. A metal-ceramic interface layer formed by the oxidation of the zirconium-niobium surface is provided at the relative motion contact surface of the humeral head prosthesis and the glenoid fossa prosthesis. The metal-ceramic total shoulder joint prosthesis system provided by this application has advantages such as longer service life, high wear resistance, low wear rate, no osteolysis, and no prosthesis loosening.

The invention relates to the technical field of medical treatment, in particular to a bionic artificial temporomandibular joint replacement prosthesis which comprises a glenoid fossa prosthesis and a mandibular branch prosthesis, the bottom of the glenoid fossa prosthesis is provided with a glenoid fossa lining plate, and the glenoid fossa lining plate is of a semi-elliptic structure; two transverse telescopic sleeves and a plurality of circumferential telescopic assemblies are arranged in the glenoid fossa lining disc; a spherical nest is connected between the two transverse telescopic sleeves, a condyle process ball is arranged at the top of the mandibular branch prosthesis and movably connected into the spherical nest, and the problems that in the prior art, a bionic artificial temporomandibular joint replacement prosthesis is prone to being abraded, a large number of chippings are generated, local infection and inflammation are caused, transplantation fails, and the prosthesis is prone to being damaged are solved. The problems that in the prior art, existing joints are difficult to move, limitation is large, the conditions of model selection difficulty and insufficient adaptability are prone to occurring, popularization is not convenient, effective movement of the joints cannot be guaranteed, and the movement effect needs to be enhanced are solved.