Early Radiographic and Clinical Outcomes of an Additive-Manufactured Acetabular Component

Autor: Logan Radtke, MD, Jeffrey J. Frandsen, MD, Alex J. Lancaster, MD, Shanna Loughmiller, BA, Brenna E. Blackburn, PhD, Maryam Soltanolkotabi, MD, Lucas A. Anderson, MD, Jeremy M. Gililland, MD
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Arthroplasty Today, Vol 27, Iss , Pp 101371- (2024)
Druh dokumentu: article
ISSN: 2352-3441
DOI: 10.1016/j.artd.2024.101371
Popis: Background: Additive manufacturing has recently gained popularity and is widely adopted in the orthopaedic industry. However, there is a paucity of literature on the radiographic and clinical outcomes of these relatively novel components. The aim of this study was to assess the 2-year clinical and radiographic outcomes of a specific additive-manufactured acetabular component in primary total hip arthroplasty. Methods: We performed a retrospective review of 60 patients who underwent primary total hip arthroplasty with the use of the Stryker’s TRIDENT II acetabular component. Evaluation of radiographs was performed at 6 weeks, 1 year, and 2 years postoperatively. Radiographs were evaluated for radiolucencies in Charnley and DeLee zones, signs of biologic fixation, and acetabular inclination and anteversion measurements. Patient-reported outcomes and complications were also obtained. Results: There were no cases of component loosening or changes in component position during follow-up, with an average follow-up time of 1.7 years. A radiolucent line was identified in one patient in zone 1 at 6 weeks; this was absent at 1 year. Radiographic signs of cup biologic fixation were present in 85% of cases by final follow-up. The average inclination was 45.1 (SD = 4.0), and the average anteversion was 26.9 (SD = 5.2). Patient-Reported Outcomes Measurement Information System scores significantly increased at the final follow-up, and there were no complications in this cohort. Conclusions: This study demonstrated excellent radiographic and clinical outcomes with this novel additive-manufactured acetabular component at early follow-up. Although longer-term follow-up is warranted, this additively manufactured highly porous titanium acetabular component demonstrated excellent biologic fixation and reliable fixation at mid-term follow-up.
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