A HEMI PROSTHESIS DEVICE SUITABLE FOR REPLACEMENT OF PROXIMAL HUMERUS OF INDIAN PATIENTS.

摘要

A hemiprosthesis device, which is meant for treatment at a relatively low cost of persons of South-Asian and more particularly, Indian origin, having two-part, three-part and four-part displaced fracture with or without dislocations of shoulder joints in osteoporotic bones and fractures of the articular surface of the humeral head involving more than 40 % splitting fractures, and for pathologies of (pre-malignant as well as malignant) proximal humerus, comprising a head component (1), a stem component (2), a medial off-set component (3), and a lateral off-set component (4), the said components (1, 2, 3, 4) being arranged to operate in an inter-connected manner, characterized in that the axes of the head (1) and stem (2) components are held at angle (A) of 125° with a range varied from 120° to 130°, that the cross section of stem component (2) is substantially triangular, that the medial off-set component (3) has a flat base and that the lateral off-set component (4) tapers from the proximal end to the distal end thereof at an angle of 15°.