The CapFlex PIP has been developed to serve as a bicondylar surface replacement. The anatomical design of the prosthesis enables high primary stability, due in particular to the resulting large bony supporting surfaces. Since bone resection can be minimized during implantation, the collateral ligaments can be preserved, which in turn contributes to high postoperative stability. The form of the CapFlex PIP helps to stabilize the joint over its entire motion amplitude. This ensures significantly improved lateral stability, which is especially important for the index and middle fingers, as these fingers are subject to continuous lateral stress exerted by the thumb. And thanks to its short, non-cemented spikes, the CapFlex PIP offers perfect preconditions for revision procedures.
As regards the material, we opted for the proven metal/polyethylene tribological pair. The inner surfaces of the prosthesis as well as the spikes are coated with pure titanium for superior osseointegration.
To enable secure step-by-step implantation, special instruments are available for the CapFlex PIP. In designing them, the focus was very much on easy and efficient handling. As a result, the size-specific instruments are consistently color-coded. To distinguish clearly between the instruments needed for implanting the proximal and the distal components of the prosthesis, the ergonomically formed silicone handles are differently colored and marked.
* Funded by the Federal Ministry of Economics and Technology on the basis of a resolution passed by the German "Bundestag"