| 摘要 |
A small profile, cylindrically or conically shaped prosthetic disc device (20) is provided. The device housing is comprised of two longitudinally split hollow halves (22, 24), between which is contained a hemi-lunar shaped resilient body (41) which may be of a polymeric type, or it may contain hydrogel. This hemi-lunar disc lies in concave surfaces (51) located on the interior of each side of the split cylindrical housing. The housing halves (22, 24), even under maximum physiological loads, do not contact one another directly. Threads (31) on the exterior surface (30) of the cylindrical housing (20) facilitates insertion, and retention in theprepared bone opening. |
