Prosthesis component and method for its manufacture

An orthopedic prosthesis component (18) for implantation as a unit into a skeleton bone cavity comprising

• (A) a joint member (29), and
• (B) an anchoring member (20, 30) coupled to said joint member (28), said anchoring member only including:
• (1) a plurality of elongated rod shaped anchoring posts (30) having opposite proximal and distal terminal ends and a substantially cross-sectional perimeter, and
• (2) a support plate (20) having two opposing upper and lower surfaces,
• (a) said upper surface adapted for carrying said joint member (28), and
• (b) said lower surface configured to abut a resected surface of the bone and being connected to said anchoring posts (30) which extend into the prepared bone cavity in a series of curved paths oriented substantially along the trabecular structure of the bone,
• each of said anchoring posts
• containing a plurality of anchoring collars (32) disposed at predetermined intervals intervals along said posts, each of said collars having radial surfaces extending beyond the perimeter of said posts, whereby said collars serve to transfer loads imposed on the anchoring posts to spongiose material that is packed around said posts after the posts are positioned in the skeleton bone cavity.