Mattia Loppini1, Riccardo Ruggeri2, Antonello Della Rocca2, Davide Ferrentino2, Federico Della Rocca2, Francesco Traverso2, Franco Astore2, Guido Grappiolo2

1. Humanitas University, Humanitas Clinical and Research Center, Milan, Italy
2. Humanitas Clinical and Research Center, Milan, Italy


Total hip arthroplasty (THA) with conventional cementless stems has been widely recognized as reliable and effective procedure for the management of hip diseases in both old and young people.

A recent meta-analysis of randomized controlled trials showed that short stems provide the same clinical and radiographic outcomes as conventional implants and are associated with lower risk of post-operative thigh pain.

The cementless Global Tissue Sparing (GTS) Primary Hip Stem (ZimmerBiomet) is a tapered cementless short stem that aims to preserve the bone stock of the greater trochanter and to limit the invasion of the femoral diaphysis.

For this reason, it was designed reducing the trochanteric shoulder and shortening the stem. In a biomechanical study, GTS stem demonstrated a comparable rotational stability to conventional CLS stem (ZimmerBiomet), even though the reduced longitudinal length and trochanteric shoulder.


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GAP II è un sistema per l’archiviazione di dati clinici e chirurgici di pazienti sottoposti ad interventi di chirurgia protesica di anca, ginocchio e spalla.