Urpinder GrewalRoyal Sussex County Hospital, United Kingdom
Title: A review of custom 3D-printed acetabular components in revision arthroplasty for the management of extensive acetabular defects
Introduction: The treatment of extensive acetabular defects is both extremely difficult and fraught with possible complications. There remains a paucity of data regarding the outcome data of custom 3D printed acetabular components. The goal of this study was to outline the outcomes of 3D printed patient specific acetabular components.
Methods: A comprehensive literature search was conducted using the PUBMED database. Inclusion criteria were case series with greater than 5patients involving 3D printed acetabular component use for massive acetabular defects, minimum mean follow-up duration required was 12months. Primary outcome measures were implant revision rate, secondary measures investigated were complications including dislocation, nerve injury, infection.
Results: 7 studies were identified after the retrospective search containing a total of 96patients with mean follow-up in studies ranging from 12 to 62months. Implants identified were made by 3 different manufacturers. The implant revision rate was noted to be 4.2% (4/96). Secondary complication were dislocation 6.3% (6/96), infection 2.0% (2/96) and nerve injury was noted in 7% (4/57); we noted that 3 studies did not comment on nerve injury frequency.
Discussion/Conclusion: To our knowledge this is the first study to analyze collective outcomes in literature with regards to custom 3D acetabular component use in this setting. Revision rate of 4.2% and dislocation rate of 6.3% in available studies suggest that 3D acetabular components are a valuable tool for the reconstructive surgeon for massive acetabular defects with promising early implant survival and stability.
Current case series in literature are of small size and our study adds valuable information to the existing literature by collating and scrutinizing these data sets. This review highlights the lack of mid and long data; which are necessary to analyze both the economical and clinical outcomes of 3D printed custom components with comparison to traditional standard implants.
Urpinder Grewal currently working at the Royal Sussex County Hospital, Brighton as a senior specialist registrar with a national training number. The Royal Sussex County Hospital is a major trauma centre and tertiary referral unit for Orthopaedics. His curriculum vitae and portfolio demonstrate a commitment to a career in orthopaedic surgery with a particular focus on trauma surgery, peri-prosthetic fractures and revision arthroplasty.