The The use of MAÏA™ prothesis in the treatment of trapeziometacarpal arthritis: a single center retrospective study with 6-years follow-up| Lo Scalpello - Journal
Vol. 40: Issue 2 - August 2026
DOI: 10.36149/10.36149/0390-5276-363
Foot, ankle, hand surgery
Published: 2026-09-30
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The The use of MAÏA™ prothesis in the treatment of trapeziometacarpal arthritis: a single center retrospective study with 6-years follow-up

Centro Metropolitano di Chirurgia della Mano ASL3 Genovese Genoa, Italy; SC Ortopedia e Traumatologia Ospedale Villa Scassi, Genoa, Italy
Centro Metropolitano di Chirurgia della Mano ASL3 Genovese Genoa, Italy
Dipartimento di scienze chirurgiche e diagnostiche integrate (DISC), Università di Genova, Genoa, Italy
SC Ortopedia e Traumatologia Ospedale Villa Scassi, Genoa, Italy
osteoarthritis prosthesis hand surgery, trapeziometacarpal arthritis movement-preserving surgery

Abstract

Objective. Trapeziometacarpal (TMC) osteoarthritis is a common condition and several treatments have been described, including first joint arthroplasty. The aim of this study is to report our experience with the MAÏA™ prosthesis evaluating clinical and radiographic outcomes.

Methods. In this retrospective study 60 hands treated with MAÏA™ prothesis have been re-evaluated. Pain on VAS scale, Kapandji score, pinch strength, functional (DASH score) and radiographic parameters were collected at follow-up and compared to pretreatment values.

Results. After a mean follow-up of 28.4±11.8 months significant improvement of pain, Kapandji score, overall hand function was observed. Grip strength increased. Height of thumb column was preserved. Two cases of trigger finger of the thumb and one case of De Quervain disease were reported. Radiographic analysis at follow-up revealed no signs of osteolysis. One event of implant dislocation was observed.

Conclusions. MAÏA™ prothesis can be considered a reasonable option for selected patients with TMC osteoarthritis, offering significant pain relief and a trend towards improved hand function and range of motion.

Affiliations

Chiara Stambazzi

Centro Metropolitano di Chirurgia della Mano ASL3 Genovese Genoa, Italy; SC Ortopedia e Traumatologia Ospedale Villa Scassi, Genoa, Italy

Marvin Menini

Centro Metropolitano di Chirurgia della Mano ASL3 Genovese Genoa, Italy

Matteo Formica

Dipartimento di scienze chirurgiche e diagnostiche integrate (DISC), Università di Genova, Genoa, Italy

Luca Pandolfo

SC Ortopedia e Traumatologia Ospedale Villa Scassi, Genoa, Italy

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Copyright

© © Ortopedici Traumatologi Ospedalieri d’Italia (O.T.O.D.i.) , 2026

How to Cite

[1]
Stambazzi, C., Menini, M., Formica, M. and Pandolfo, L. 2026. The The use of MAÏA™ prothesis in the treatment of trapeziometacarpal arthritis: a single center retrospective study with 6-years follow-up. Lo Scalpello - Journal. 40, 2 (Sep. 2026), 118-124. DOI:https://doi.org/10.36149/10.36149/0390-5276-363.
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