4.3 Article

Custom-made 3D-printed porous metal acetabular composite component in revision hip arthroplasty with Paprosky type III acetabular defects: A case report

Journal

TECHNOLOGY AND HEALTH CARE
Volume 31, Issue 1, Pages 283-291

Publisher

IOS PRESS
DOI: 10.3233/THC-212984

Keywords

Revision hip arthroplasty; acetabular defects; 3D printing; porous titanium; composite component; custom-made; case report

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This case report presents a successful treatment of Paprosky type III acetabular defects using a 3D-printed porous titanium acetabular composite component. The component was implanted through a posterolateral approach and fixed with cup screws. At a 2-year follow-up, the patient had satisfactory hip joint function without any complications.
BACKGROUND: Increases in the numbers of surgical procedures for primary total hip arthroplasty (THA) inevitably lead to increases in the requirements for revision THA. The achievement of long-term stability is difficult or impossible by conventional implants in patients with severe destruction of the acetabulum. OBJECTIVE: This case report presents a successful treatment using a specific three-dimensional (3D)-printed porous titanium acetabular composite component without a flange in the management of Paprosky type IIIB acetabular defects. METHOD: A 65-year-old female diagnosed with right hip prosthetic loosening with a huge acetabular defect presented to our hospital. We designed the 3D model of the pelvis and created an individualized 3D-printed porous titanium acetabular composite component for revision THA. The procedure was performed through a posterolateral approach, and the component was implanted in the defect and fixed with cup screws using the drill guides. RESULTS: At the last follow-up at 2 years, the patient had a satisfactory hip joint function and no signs of loosening or other complications were found. CONCLUSIONS: The 3D-printed porous titanium acetabular composite component without a flange is showing promising clinical and radiological outcomes in the management of Paprosky type III acetabular defects.

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