| 摘要 |
<p>An implantable modular orthopedic prosthesis, preferably for hip (10), knee (110) or shoulder (210) arthroplasty, is disclosed which consists of three components. A first component has an elongated stem (12, 112, 212) with a free end (14, 114, 214) configured to be situated within the intramedullary canal of a patient's bone, and an opposite end (16, 116, 216) having an articulating portion such as a Morse-tapered member (18, 118, 218). A second component (20, 120, 220) has another articulating portion which can also be a corresponding tapered member (22, 122, 222) that is matingly engageable with the articulating portion (18, 118, 218) of the first component (12, 112, 212). A third component (24, 124, 224) has a body (26, 126, 226) with a linearly-extruded channel (28, 128, 228) through which the articulating portions (18, 22) are adjustably received, wherein at least one of the first (12, 112, 212) and second (20, 120, 220) components is radially-expandable to pressure lock against an internal surface (30, 130, 230) of the channel (28, 128, 228) in a selected position and arrest the first (12, 112, 212), second (20, 120, 220) and third (24, 124, 224) components together as the articulating portions are fully engaged with one another.</p> |
