Finger prosthesis

finger joint replacement - product overview


Interphalangeal joint

Proximal component

The proximal component consists of a 3D printed titanium alloy (TiAl6V4) with a titanium nitride ceramic coating on the articulating surface. On the bone side, the proximal components are coated with a double coating of pure titanium and tricalcium phosphate to enable the best possible osseointegration.

Distal component

The distal component is made of a composite material consisting of polyetheretherketone (PEEK) and an additional reinforcement with carbon fibers. This choice of material makes it possible to avoid large dimensions as well as thin-walled polymer components. On the bone side, the distal component is also coated with a double coating of pure titanium and tricalcium phosphate.

The HAPTic® system was developed in cooperation with Prof. Dr. Uwe Joosten (Marienhospital Osnabrück) and Dr. med. univ. Armin Zadra (Landeskrankenhaus Bad Radkersburg).


Both components are available in five sizes. The wide range of sizes allows preservation of the collateral ligaments by minimizing resection. Due to the highly congruent articulation, the selected size of the proximal component must always match that of the distal component.


  • implatan®; TiAl6V4 acc. to ISO 5832-3
  • PEEK-OPTIMA®, carbon fiber strengthened


  • TiN coating: articulating surfaces of the proximal components
  • implaFix® cpTi and TCP coating: Bone-sided surfaces

Product range:

  • distal component in 5 sizes
  • proximal component in 5 sizes


trapeziometacarpal joint 

Metacarpal Components

The CarpoFit® trapeziometacarpal joint replacement system consists of three modular components. The metacarpal cementless stems are available in four sizes 5, 6, 7, and 8mm.

The CarpoFit® trapeziometacarpal joint implant was developed in cooperation with Prof. Dr. med U. Joosten, orthopaedic surgeon, Clinic for Traumatology Marienhospital Osnabrück Germany.

Articulating components

The articulating components are available in 4 neck lengths and each will fit any of the 4 metacarpal stems.


The conical press-fit cup enables an optimal primary fixation in the bone.


  •  implatan®; TiAl6V4 acc. to ISO 5832-3
  •  implavit®; CoCrMo acc. to ISO 5832-12
  • PEEK-C; polyetheretherketone with a carbon matrix for strengthening


  • TiNbN: the surfaces of the articulating components are available with TiNbN coating
  • bone-sided surfaces made of CoCrMo are coated with an implaFix® double coating of cpTi and TCP
  • bone-sided surfaces made of TiAl6V4 

Product range:

  • pressfit cup of PEEK-C or CoCrMo with and without TiNbN coating
  • articulating components: short, medium, long and extra long
  • stem components cementless Ø 5 to 8mm

This area is intended for medical professionals only and may only be provided to certain professional personnel.