Abstract: An orthopedic spacer assembly can include a bone plate and a spacer. The bone plate can include a first end portion and a second end portion, the second end portion defining a plurality of anchor openings. The spacer can have a c-shaped body and can include a central bore extending through a thickness of the spacer. The spacer can be disposed between the bone plate and a subject's bone such that the central bore of the spacer aligns with an anchor opening of the plurality of anchor openings.

Abstract: A femoral stem implant includes an implant body having a neck and a shaft, the shaft comprising a proximal end portion, a distal end portion, a cranial or anterior aspect, a caudal or posterior aspect, a medial aspect, and a lateral aspect. A porous structure extends circumferentially around the shaft from the cranial or anterior aspect, across the medial aspect, and across the caudal or anterior aspect. At least a portion of the lateral aspect of the shaft comprises a solid reinforcement portion that is at least partially bordered by the porous structure.

Abstract: An orthopedic implant has an implant body defining a longitudinal axis extending in a direction of implantation of the orthopedic implant, the implant body having a first end portion and a second end portion. A porous structure extends circumferentially around the implant body and has a first circumferentially-extending zone exhibiting a first coefficient of friction with bone tissue and a second circumferentially-extending zone exhibiting a second coefficient of friction with bone tissue, wherein the second coefficient of friction is greater than the first coefficient of friction. The first circumferentially-extending zone of the porous structure is offset from the second circumferentially-extending zone along the longitudinal axis such that during implantation of the orthopedic implant, the first circumferentially-extending zone of the porous structure contacts bone before the second circumferentially-extending zone of the porous structure.