| 摘要 |
<p>A proximal humeral prosthesis (20; 40) that is particularly designed for treating a fractured humerus (10). The prostehsis (20; 40) coprises a head (22; 42) corresponding to the humeral head (11) of a patient, and a stem (24) having a proximal end to which th ehead (22; 42) is mounted, The prosthesis (20; 40) has a central plane coincident with the longitudinal axis (34) of the stem (24) about which it has a mirror axis of symmetry. One, or preferably pair of, projecting ribs (30, 32) are positioned at or near the proximal end of the stem (24) adjacent the head (22; 42). the projecting ribs (30, 32) are offset in opposite directions relative to the center plane at substantially identical offset angle (e.g., bout 20°to about 40°) approximating the greater or lesser tuberosity (12, 14) of the humerus (10). Also disclosed is a method of treating a fractured humerus (10) with this prosthesis (20; 40).</p> |
