| 摘要 |
A proximal humeral prosthesis (20; 40) that is particularly designed for treating a fractured humerus (10). The prosthesis (20; 40) comprises a head (22; 42) corresponding to the humeral head (11) of a patient, and a stem (24) having a proximal end to which the head (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 a 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 angles (e.g., about 20 DEG to about 40 DEG ) 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).
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