Trabecular Titanium acetabular cups in hip revision surgery: mid-term clinical and radiological outcomes

HIP International - Tập 28 Số 2_suppl - Trang 61-65 - 2018
Federico De Meo1, Giorgio Cacciola2, Vittorio Bellotti3, Antongiolio Bruschetta4, Pietro Cavaliere1
1Franco Scalabrino Orthopaedic Institute of Southern Italy, Messina, Italy
2Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Italy
3ICATME Hospital Quiron Dexeus, Barcelona, Spain
4Orthopaedic Department, ASST-Monza, University of Milano-Bicocca, Monza, Italy

Tóm tắt

Introduction: Severe acetabular bone loss during revision hip arthroplasty can be restored with different surgical techniques. Best results have been observed using porous tantalum cementless cups. Trabecular Titanium (TT) cups were designed to reproduce the structure, mechanical and biological characteristics of trabecular bone. Few clinical studies have been published with these cups. The aim of this study is to evaluate the clinical and radiological outcome of patients with large acetabular defects (Paprosky IIb or higher) revised using TT cups. Materials and methods: 64 consecutive patients who underwent revision for total hip arthroplasty (THA) between 2011 and 2015 at our institution were enrolled. All were classified as Paprosky IIb, IIc, IIIa and IIIb. Periprosthetic joint infections and fractures were not included in this study. Radiographic and clinical (Harris Hip Score (HHS)) outcomes were evaluated. Kaplan-Meyer survivorship curve was performed. Results: Complete data of 58 patients (mean follow-up 48.3 months) were analysed. 6 patients underwent a further revision (10.3%). Causes of re-revision were instability (5.2%), infection (3.4%) and aseptic loosening (1.7%). No radiolucent lines or signs of migration were observed. Survivorship was 94.8%. HHS Improved from a mean of 36.5–83.7. Discussion: TT cups demonstrated encouraging results at mid-term follow-up. Cup modularity represented a helpful tool to restore hip rotation centre and to reduce the risk of dislocation. The capacity of trabecular titanium to induce bone growth and the versatility of modularity, make the Delta TT System a very useful aid for surgeons who are more frequently faced with complex revision.

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