25dkou314
10.3205/25dkou314
urn:nbn:de:0183-25dkou3143
Meeting Abstract
Minimum 2-year outcomes of a Novel 3D-printed porous titanium acetabular shell for complex primary and revision total hip arthroplasty
Braun
Braun
Sebastian
S
Charité – Centrum für Muskuloskeletale Chirurgie, Berlin, Deutschland
author
Somerville
Somerville
Lyndsay
L
University Hospital – London Health Science Centre, London, Kanada
author
Vasarhelyi
Vasarhelyi
Edward
E
University Hospital – London Health Science Centre, London, Kanada
author
Howard
Howard
James
J
University Hospital – London Health Science Centre, London, Kanada
author
Lanting
Lanting
Brent
B
University Hospital – London Health Science Centre, London, Kanada
author
Naudie
Naudie
Douglas
D
University Hospital – London Health Science Centre, London, Kanada
author
MacDonald
MacDonald
Steven
S
University Hospital – London Health Science Centre, London, Kanada
author
McCalden
McCalden
Richard
R
University Hospital – London Health Science Centre, London, Kanada
author
German Medical Science GMS Publishing House
Düsseldorf
610
20251031
engl
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung).
M0634
314
Deutsche Gesellschaft für Orthopädie und Unfallchirurgie
Deutsche Gesellschaft für Orthopädie und Orthopädische Chirurgie
Deutsche Gesellschaft für Unfallchirurgie
Berufsverband für Orthopädie und Unfallchirurgie
Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2025)
Abstracts | Primär- und Revisionsendoprothetik – Materialien & Implantate
Berlin
20251028
20251031
AB47-3323
TextObjectives and questions: Managing acetabular bone loss in complex primary and revision total hip arthroplasty (THA) presents significant surgical challenges. Highly porous tantalum shells have been the standard for addressing severe bone defects, but recent advancements in 3D-printing technology have led to the development of a fully porous titanium acetabular shell. This novel implant was designed to enhance osseointegration and stability, with variable-angle locking screws to optimize fixation. The purpose of this study is to evaluate the short-term clinical and radiographic outcomes of this 3D-printed titanium shell in complex primary and revision THA, with a minimum two-year follow-up.Material and methods: A retrospective cohort study was conducted on 103 patients who underwent THA using this 3D-printed porous titanium shell between 2016 and 2021. Of these, 46 patients had complex primary THA (cTHA), and 57 underwent revision THA (rTHA). Revision indications included aseptic loosening (21 cases), prosthetic joint infection (18), periprosthetic fracture (6), instability (4), trunnionosis (2), and malposition (4). Acetabular bone loss was categorized using the Paprosky classification system. Functional outcomes were assessed using the Harris Hip Score (HHS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), while radiographic analysis evaluated osseointegration and implant stability.Results: With a mean follow-up of 4.4 years (range 2.2–7.8 years), all patients demonstrated significant functional improvements. The HHS improved from 36.8 ± 17.0 to 81.8 ± 14.0 (p<0.001), while WOMAC scores increased from 46.0 ± 18.2 to 69.8 ± 19.8 (p<0.001). The mean number of screws per case was 5.5 (3.4 locking, 2.0 non-locking), and titanium augments were used in 10 cases (9.7%). Radiographic analysis revealed 99.0% osseointegration, with minimal evidence of loosening or migration. A total of 10 reoperations (9.7%) were recorded, primarily due to periprosthetic joint infection (n=6) and aseptic loosening (n=1).Discussion and conclusion: This 3D-printed porous titanium acetabular shell demonstrated excellent fixation, osseointegration, and early survivorship in both complex primary and revision THA. Functional outcomes were significantly improved, and the implant exhibited stability comparable to traditional porous tantalum alternatives. The integration of variable-angle locking screws may provide additional fixation advantages, particularly in cases with significant acetabular bone loss. These results support the continued adoption of 3D-printed titanium technology for complex acetabular reconstruction, though long-term follow-up is needed to assess its durability over time.
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