Revision total hip arthroplasty (THA) presents a formidable challenge when addressing extensive acetabular defects, particularly in severe cases classified under Paprosky types 3A and 3B and American Academy of Orthopaedic Surgeons types 3 and 4. Traditional methods often fall short, prompting the potential use of custom triflange acetabular components or patient-specific acetabular implants (PSAIs). These implants are specifically designed to conform to an individual's anatomy, aiming to enhance defect reconstruction and pelvic stabilization. This case series describes the utilization of advanced 3-dimensional printing and rapid prototyping technologies to construct customized acetabular components, which can be instrumental in enabling precise preoperative planning and surgical execution for these difficult acetabular cases and potentially leading to improved surgical outcomes.
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Periprosthetic acetabular fractures are a major challenge in orthopedics. Proper recognition of these complex cases helps to identify and treat patients with different presentations. These fractures can occur intraoperatively and be treated immediately, or they can occur postoperatively, following trauma or in the context of chronic low bone quality or associated implant loosening.
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Monoflange custom-made partial pelvis replacements offer a viable solution in extensive Paprosky III defects.
Bone Jt Open
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Department of Tumour Orthopaedics and Revision Arthroplasty, Orthopaedic Hospital Volmarstein, Wetter, Germany.
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