127 results about "Bone humerus" patented technology

The humeral portion of a shoulder prosthesis includes a diaphyseal component configured for fixation within the humerus, a metaphyseal component, configured for removable implantation within the metaphysis of the humerus, and an engagement mechanism for removably engaging the two components. The metaphyseal component can initially include a convex articulating surface that can be replaced with a concave surface during the shoulder arthroplasty procedure or in a subsequent revision surgery. The metaphyseal component can also include a feature to facilitate removal of the component from the bone once it has been disengaged from the diaphyseal component.

A glenoid implant has an anatomically formed body including of metal and/or plastic materials. It further has a contact surface adapted to extend the surface of a glenoid and to bear a humerus. In the implant body, there is at least one hole with a screw head seating area for holding the head of a screw, which may be screwed into a glenoid for fixedly attaching the glenoid implant.

A surgical assembly for resecting a greater tubercle from a humerus of a patient during performance of a shoulder replacement procedure. The surgical assembly includes a cutting tool for resecting the greater tubercle from the humerus. The surgical assembly also includes a tool guide member having a tool guide surface defined therein. The tool guide surface is configured to position the cutting tool in a predetermined position relative to the greater tubercle of the humerus.

A stemless humeral anchor (10) includes a first end (12) configured to be embedded in a proximal portion of a humerus and a second end (14); a mating portion (16) for an articular component; a transversely extending collar (20); and a rotation control feature (22, 22A) for resisting rotation when the stemless humeral anchor is implanted. A void filling protrusion (24) can extend circumferentially from rotation control feature and can include a porous shell (26), in which a void filling component (28) can be disposed. The rotation control feature can comprise arms. One or more arms (22A) can have a larger radial extent than the others (22). A prosthesis assembly includes a base member (104) that has a helical structure (224) and one or more pathways (300). The pathway is accessible from a proximal end and is directed distally through the helical structure. The pathway is located inward of an outer periphery of the helical structure. The pathway extends in a space between successive portions of the helical structure. The prosthesis assembly includes a locking device (108) that has a support member (132) and an arm (110) that projects away from the support member. The arm is disposed in the pathway when the support member is disposed adjacent to the proximal end of the base member. The arm is disposed through bone in the space between successive portions of the helical structure when the prosthesis assembly is implanted.

A bone plate system for repair of a proximal humeral head fracture, which includes a fixation plate having a main body and a depending alignment flange, a plurality of elongated compression screws to extend through the intact humeral head into the cortical bone of the fractured portion and a cover plate. With the fixation plate in place, fastened to the humerus, the cover plate is in turn fastened to the fixation plate and provides a defined amount of clearance in a region adjacent the heads of the compression screws to allow measured back-out of the screws upon settling of the fractured bone portion at the fracture site.

The invention is a modular composite shoulder prosthesis 64, whose construct incorporates a solid autogenous bone graft 50 to be used to replace the upper humerus in certain fracture types. The prosthesis comprises a stem 22 to be inserted in the canal of the humerus, an intermediary part reduced to a medial pillar 24 and a head which is a generally spherical cap 20 that is hollow. The head of the prosthesis being hollow and coated with an osteoconductive material, the lateral aspect of the medial pillar as well as the upper part of the stem being also coated with the same material, an epiphyso-metaphyseal space is delineated in which a solid autogenous bone graft is fitted. Union can be achieved between the coated parts of the prosthesis, the bone graft 50 and the tuberosities reattached to the humerus shaft, secured to holes 62 of the medial pillar and between themselves.

The invention provides an assembly type shoulder joint prosthesis and a manufacturing method thereof. The assembly type shoulder joint prosthesis comprises a scapula prosthesis, a glenoid cavity prosthesis and a humerus prosthesis, wherein the free end of a glenoid cavity supporting rod of the glenoid cavity prosthesis is in movable pivot connection with a glenoid cavity part of the scapula prosthesis; a glenoid cavity bone inner sleeve of the glenoid cavity prosthesis is arranged in a humeral head hinging groove of the humerus prosthesis; and a bone trabecula structure is arranged on the outer wall of a humerus handle in a coating manner. Through the adoption of the assembly type shoulder joint prosthesis disclosed by the invention, a set of the scapula prosthesis, the glenoid cavity prosthesis and the humerus prosthesis which are assembled in a cooperating manner and are mutually connected and in cooperation is provided, so that the prosthetic replacement requirements of a patient ofwhich the humerus, the glenoid cavity and the scapula are damaged can be met, and relative moving relationship between the scapula and the glenoid cavity of the human body is also practically simulated; and the bone trabecula structure is arranged on the outer wall of the humerus handle in a coating manner, so that the human organism can be quickly and firmly adhered to the prosthesis, and the problem that prosthesis loosening is easy to generate through bone cement, and during polymerization of the bone cement monomer, a large amount of heat is released, and periphery tissue damages are generated are solved.

A humeral cut guide member for a humeral head that can comprise: a bone-engagement member including a first patient-specific bone-engagement surface that is complementary and made to substantially mate and nest in only one position on a specific patient's humeral head; a registration member connected to the bone-engagement member including a second patient-specific bone engagement surface that issized and made to substantially mate and nest in only one position with the specific patient's bicipital groove; and a cut guide plate connected to and extending away from the bone-engagement member such that, upon the bone-engagement member mating and nesting with the specific patient's humeral head, the cut guide plate is spaced apart from the humeral head, wherein cut guide plate defines an elongated slot.

The invention discloses a multi-angle locking and fixing humerus straight type interlocking intramedullary pin. The multi-angle locking and fixing humerus straight type interlocking intramedullary pincomprises a humerus intramedullary pin main pin, wherein the humerus intramedullary pin main pin adopts a hollow structure, and comprises a near end intramedullary pin, a far end intramedullary pin and a connecting section; the diameter of the near end intramedullary pin is greater than that of the far end intramedullary pin; one end of the near end intramedullary pin is in transition connectionwith the far end intramedullary pin through the connecting section, and the inner part of the other end of the near end intramedullary pin is connected with a terminal cap; the near end intramedullarypin, the far end intramedullary pin and the connecting section adopt an integrated structure; the diameter of the near end intramedullary pin is 9mm, a plurality of pin holes are formed in the near end intramedullary pin and the far end intramedullary pin; bone screws are arranged in the pin holes; and the bone screws in the near end intramedullary pin are multi-angle screws. According to the multi-angle locking and fixing humerus straight type interlocking intramedullary pin disclosed by the invention, the opportunity of selecting appropriate humerus intramedullary pin main pin according tohumerus individual dissection differences is increased, and the operation risk of generating fracture of humeral head and injury of axillary nerve caused by that an opening in the humerus head part islarge is reduced.

The invention relates to the technical field of artificial prosthesis and particularly relates to a superficial replacement prosthesis for an elbow joint. The superficial replacement prosthesis for the elbow joint comprises a prosthetic elbow joint head, wherein a mounting groove is formed in the prosthetic elbow joint head and is mounted at a distal end of a humerus; a connecting part, wherein one end of the connecting part is connected with the prosthetic elbow joint head, and the other end of the connecting part stretches along a proximal end of the humerus; and a bone grafting groove, which is arranged in the mounting groove and is used for accommodating grafted bone scraps. According to the superficial replacement prosthesis for the elbow joint, provided by the invention, the degree of freedom of the elbow joint of a sufferer is not restricted, and the traditional problem that the movement of the elbow joint is restricted is solved; by using the superficial replacement prosthesis for the elbow joint, the mass of bone section of the elbow joint of the sufferer is little, and the recovery and later-stage reconditioning of the elbow joint of the sufferer are facilitated; and furthermore, the bone grafting groove is further arranged and is used for being implanted with bone so as to supplement bone mass of the sufferer, the reducing of the weight of the elbow joint part is facilitated, the degree of comfort of the sufferer is increased, and the bone in the bone grafting groove after long-term recovery can be ankylosed with the humerus, so that the normal form and function of the humerus are restored.

A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The base may include a proximal collar having a proximal surface and a bone-engaging surface opposite the proximal surface. The collar may have a superior portion and an inferior portion, the superior portion defining an arc shape and the inferior portion defining a substantially triangular shape.

An anchor trajectory guide and methods of use thereof are provided. The guide includes a body that has a medial side. The medial side can be placed over a lateral side of a fixation plate. The anchor trajectory guide also includes a locator and a plurality of guide apertures. The locator is disposed on or through the medial side of the body. The locator can be mated with the fixation plate. The guide apertures are disposed through the body at positions corresponding to define anchor locations and orientations to provide good purchase adjacent to or in cortical bone around a medial side of a humerus.

The invention discloses a Mimics-based computer simulation double-wedge-shaped osteotomy method. The method comprises the following steps: acquiring CT projection data of the affected side and CT projection data of the uninjured side of a patient; respectively inputting the affected side CT projection data and the uninjured side CT projection data into Mimics, and establishing a corresponding affected side three-dimensional model and uninjured side three-dimensional model only containing humerus and ulna and radius; performing X-ray photography on the affected side three-dimensional model and the uninjured side three-dimensional model in an X-ray module, and acquiring a corresponding affected side simulated normal-position X-ray film and an uninjured side simulated normal-position X-ray film; determining an affected side osteotomy orthopedic angle according to the affected side simulation normal position X-ray film and the uninjured side simulation normal position X-ray film; designing an osteotomy path on the affected side simulation orthotopic X-ray film; projecting an osteotomy path on the affected side simulation normal position X-ray film to an entity STL according to a position likelihood principle to obtain an osteotomy indication point; and enabling a computer to simulate osteotomy and surgical reduction. The method can improve the measurement precision of the lifting angle, effectively reduce the lateral displacement, increase the bone surface contact area, improve the bone contact stability, and reduce the bone disconnection rate.