A method of delivering a balloon implant into a patient includes delivering an augment to an implantation site within the patient, securing the augment to tissue when the augment is at the implantation site, and delivering a balloon implant including a balloon to the implantation site and inflating the balloon such that movement of the balloon implant is restrained based on a position of the augment

A biocompatible polymer composition is disclosed comprised of high density polyethylene particles. The high density polyethylene particles when sintered into an article can promote vascular growth. For example, when molded into an article, the particles produce a porous structure particularly well suited for maxillofacial implants.

A prosthetic knee replacement apparatus constructed of rubber avoids the disadvantages of metal prosthetics. The knee replacement apparatus includes a base member as a spacer between the upper and lower legs of a patient. A femoral portion extends upwardly from an upper surface of the base member and a tibial portion is coupled to a lower surface of the base member. The knee replacement apparatus may be constructed completely or substantially from a rubber material so as to reduce friction and degeneration. The knee replacement system may be constructed or even 3D printed after the leg bones of the patient are scanned.

In accordance with at least one aspect of this disclosure, a disc replacement implant includes, a first endplate configured to engage a vertebral endplate of a first vertebra adjacent an intervertebral space, a second endplate configured to engage a vertebral endplate of a second vertebra opposite the first end plate in the intervertebral space, a core between the first and second endplates, and an annulus surrounding the core and connecting a perimeter of the first endplate to a perimeter of the second end plate. In embodiments, the annulus can include a portion that extends inwardly between the first and second core plates to the spacer.