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

Article type: Case Report

Authors: Xiao, Cong^{a; 1} | Zhang, Shaoyun^{a; b; 1} | Gao, Zhixiang^a | Tu, Chongqi^{b; *}

Affiliations: [a] Department of Orthopedics, The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan, China | [b] Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, Sichuan, China

Correspondence: [*] Corresponding author: Chongqi Tu, Department of Orthopedics, West China Hospital, Sichuan University, no. 37 Guoxue Road, 610041, Chengdu, Sichuan, China. E-mail: tucqhx@126.com.

Note: [1] Cong Xiao and Shaoyun Zhang contributed equally to this work and should be considered co-first authors.

Abstract: 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.

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

DOI: 10.3233/THC-212984

Journal: Technology and Health Care, vol. 31, no. 1, pp. 283-291, 2023