The Ascension silicone PIP is an anatomically designed, single use, one piece, flexible hinge prosthesis designed to be implanted without bone cement across the proximal interphalangeal (PIP) joint. It is made from medical grade silicone elastomer. The proximal and distal stems of the prosthesis are pre-flexed to match the approximate natural flexion position of the joint when the hand is relaxed. the PIP provides 90 degrees of flexion from full extension. The Ascension PIP finger joint prostheses is intended for cementless replacement of the proximal interphalangeal (PIP) joint where disabled by rheumatoid, degenerative, or traumatic arthritis.
A sterile, implantable artificial substitute for the proximal interphalangeal (PIP) joint(s) of the hand (finger) which typically has been damaged by rheumatoid, degenerative, or traumatic arthritis. The device typically consists of proximal and distal metal (e.g., titanium) stems, which may be coated with a material (e.g., hydroxyapatite) intended to improve fixation and stability by promoting bone ingrowth, for insertion into the prepared phalanges of the joint. The stems may have articulating surfaces or there may be separate metal [e.g., cobalt-chrome (Co-Cr)] and/or plastic ( e.g., polyethylene) articulating surface components. Dedicated tools for implantation may be included.
integralife.com