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Trapeziometacarpal Joint Prosthesis MAÏA™

The MAÏA™ prosthesis is designed for prosthetic surgical treatment of rhizarthrosis.

It consists of a hemispheric cup implanted in the trapezium, a modular neck and an anatomical metacarpal stem. It offers a full range of implants with the choice of single and dual mobility.

It has a bilayer coating of porous titanium and hydroxyapatite for cementless fixation.

Titanium neck are available for persons who are allergic to nickel.

Commercial documentation

Operating techniques


The trapezial cup is hemispherical with 4 pins for primary stabilisation.

It comes with either a standard or semi-retentive polyethylene (PE) insert for single mobility


3 offset stem sizes with head are available in dual mobility.

In single mobility, the choice of straight or offset stems allows for a better anatomical adaptation.


There are 4 homothetic sizes of metacarpal stems. They are anatomical, with small stabilisation scales along the longitudinal edges.

Access to documentation