Patent ID: 11865010
Assignee: SMITH & NEPHEW, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. An orthopedic femoral component of a knee implant comprising:
a shell region having an anterior end, a posterior end, a lateral end, a medial end, an outer joint articulation surface and an interior surface, the interior surface of the shell region comprising a smooth and continuous surface arranged and configured to reduce stress shielding and to provide improved stress distribution over the implant, the shell region further comprising a plurality of strengthening ribs formed directly on the interior surface of the shell region, the plurality of strengthening ribs extending from the smooth interior surface, the plurality of strengthening ribs extend laterally between the lateral end and the medial end, at least one of the plurality of strengthening ribs disposed within a medial condylar region of the shell region and at least one of the plurality of strengthening ribs disposed within a lateral condylar region of the shell region; and
an intermediate region located adjacent to the interior surface of the shell region, the intermediate region comprising:
a bone interface surface, the bone interface surface includes a plurality of faces shaped to accommodate a patient's resected femoral bone, and
a shell interface surface configured to interface the shell region, the shell interface surface configured to accommodate the plurality of strengthening ribs to maintain close contact between the intermediate region and the interior surface of the shell region;

wherein the intermediate region exhibits a different modulus of elasticity than the shell region.