Authors: Sorin UNGURIANU, Alin VIȘAN, Bogdan M. CIUNTU, Doina-Clementina COJOCARU, Elena-Esmeralda SARAMET, Florentin DIMOFTE, Alexandru UNGURIANU


Introduction. Increased number of femoral fractures and coxarthroses, as well as increased life expectancy lead to an increased number of mechanical complications secondary to arthroplasty procedures. Materials and methods. Out of the 1,067 arthroplasty procedures performed, we recorded 57 cases of mechanical complications: 15 prosthesis luxations, 5 prosthetic fractures, 24 postoperative periprosthetic fractures (PPF), and 13 cotyloidites. Results and discussion. Out of the 15 cases with luxation of the prosthesis, 7 were revised and 8 were reduced and received orthopedic treatment. All femoral stem fractures were revised with special femoral stems and additional implants or primary stems. The main risk factor for PPF was the age, and revisions were made using cable cerclages, plates, and screws, half of the PPF being recorded in patients with Austin Moore prosthesis. All cotyloiditis cases were revised using cemented acetabular cups or Kerboull rings and bone grafts, both femoral head diameter and the tribological properties of the materials being responsible for this complication. Conclusions. The adequate choice of the implant type and of the surgical technique is essential for reducing the incidence of mechanical complications associated with hip arthroplasty procedures.

  • cotyloiditis
  • hip arthroplasty
  • mechanical complications
  • periprosthetic fracture