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

Area of Science:

• Orthopaedic Surgery
• Biomaterials Engineering
• Medical Device Technology

Background:

• Additive manufacturing is increasingly used in orthopaedics.
• Limited data exists on radiographic and clinical outcomes of these novel implants.
• This study focuses on a specific additive-manufactured acetabular component.

Purpose of the Study:

• To evaluate the 2-year clinical and radiographic outcomes.
• To assess a specific additive-manufactured acetabular component in primary total hip arthroplasty.
• To determine the safety and efficacy of novel implant designs.

Main Methods:

• Retrospective review of 60 primary total hip arthroplasty patients.
• Used Stryker's TRIDENT II acetabular component.
• Radiographic evaluation at 6 weeks, 1 year, and 2 years for fixation, loosening, and positioning.
• Assessed patient-reported outcomes and complications.

Main Results:

• No component loosening or positional changes observed.
• 85% showed radiographic signs of biologic fixation by final follow-up.
• Significant improvement in Patient-Reported Outcomes Measurement Information System scores.
• No complications reported in the study cohort.

Conclusions:

• Excellent radiographic and clinical outcomes were achieved.
• The additive-manufactured acetabular component showed reliable biologic and mechanical fixation.
• Further long-term follow-up is recommended for comprehensive assessment.