Introduction: the use of custom-made 3D acetabular components is one of the promising methods in the reconstruction of the acetabulum with major defects, including dissociation of the pelvic bones. Which allows to achieve stable fixation and to restore the biomechanics of the hip joint.
Objectives: to analyze the results of custom-made 3D components, anti-protrusion cages, augments and hemispheric components in revision hip arthroplasty for IIIB bone defects according to W.G. PaproskyMaterials and Methods: Results of treatment of 90 patients with IIIB bone defects who underwent revision hip arthroplasty in the period from 2017 to 2022 were analyzed. Patients were divided into 3 groups: the 1st group had surgery with individual 3D components of the acetabulum, the 2nd group - with defects that were closed with hemisphere augments. In 3rd - anti-protrusion rings were installed. According to the following parameters: the reasons for the revision surgery, the duration of the surgery, blood loss, the type of revision surgery, the assessment of pain syndrome and functional outcome, the analysis was performed. Functional outcome was analyzed using the following scales: WOMAC, Harris hip score and VAS.Results3D custom-made components were more commonly used in patients with pelvic dissociation. There is a major positive dynamics of functional results in group 1.After the performed revision surgery, a total of 27 patients (30%) obtained complications, including instability in the joint (i.e., dislocation) in 10 (11.1%) patients, periprosthetic infection in 8 (8.8%), aseptic loosening of the components occurred in 4 (4.4%) patients, sciatic nerve neuropathy was noted in 5 (5.5%) patients. It should be noted that the number of all complications was higher in groups 2 and 3 of patients.Conclusions: 3D custom implants are a priority option in revision arthroplasty for IIIB defects according to W.G. Paprosky especially in cases with dissociation of the pelvic bones.