Implant Detail

APTIS has developed a revolutionary device that can end the pain thousands of people with distal radial ulna joint disorders live with every day.  It's safe, and it works. 

Here's how it works.  During the prosthesis implantation procedure, a metal plate is attached to the radius. The ulna is checked and, if needed, carefully trimmed to allow for the best possible fit.  A metal stem is inserted down the interior of the ulna.  The polymer ball then slides on to a highly polished peg on the top of the ulna stem and is secured to the metal device on the radius with a small metal cap.

Mouse over the implant below to identify key parts.


A radial plate with socket

The plate with its distal socket replaces the sigmoid notch.

A cover with two screws to complete the socket

The cover and the screws replace the TFC.

An UHMW polyethylene ball

The stem with its polished peg and the UHMPE ball replace the ulnar head.

An ulna stem with a highly polished distal peg

The stem with its polished peg and the UHMPE ball replace the ulnar head.

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