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Trabecular Metal Augments During Complex Primary Total Hip Arthroplasty
Brian C Chung1, Nathanael D Heckmann1, Matthew C Gallo1
1Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA.
Arthroplasty Today
|July 1, 2024
Summary
Trabecular metal augments (TMAs) show good early results in primary total hip arthroplasty (THA), especially for hip dysplasia. These augments are a viable option for complex primary THA cases requiring bone support.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
- Arthroplasty Research
Background:
- Trabecular metal augments (TMAs) are established for revision total hip arthroplasty (THA) to manage acetabular bone defects.
- Limited data exists on the use of TMAs in primary THA procedures.
- This study investigates the outcomes of TMAs in primary THA.
Purpose of the Study:
- To evaluate the clinical and radiographic outcomes of TMAs used in primary THA.
- To assess the efficacy and safety of TMAs in a primary THA setting.
- To provide data on TMA utilization for complex primary hip reconstructions.
Main Methods:
- Retrospective case series of primary THA patients treated with TMAs (2010-2019).
- Analysis of patient demographics, complications, revisions, and radiographic parameters (cup position, center of rotation, leg length, radiolucent lines).
- Kaplan-Meier method used for implant survivorship analysis.
Main Results:
- Thirty hips in 26 patients (average age 52.6 years) with a mean follow-up of 4.1 years were analyzed.
- Developmental dysplasia of the hip was the primary indication (60%).
- Early to mid-term outcomes showed 92.1% implant survival at 5 years, with low revision rates (10%) for aseptic loosening and instability; no progressive radiolucent lines observed.
Conclusions:
- TMAs demonstrate satisfactory early to mid-term clinical and radiographic outcomes in primary THA.
- TMA is a viable option for complex primary THA cases with bone loss or need for secondary support.
- These findings support the use of TMAs in specific primary THA scenarios.
