Blood loss in primary total hip arthroplasty with a short versus conventional cementless stem: a retrospective cohort study in a tertiary referral center.

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

Abstract

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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