Magnetic Resonance Safety Evaluation of a Novel Alumina Matrix Composite Ceramic Knee and Image Artifact Comparison to a Metal Knee Implant of Analogous Design

• DOI: 10.1016/j.artd.2023.101170
• Publication Date: 2023-07-23T09:38:35Z
• Authors: Yvonne Mödinger; Eric D. Anttila; Grant M. Baker; David C. Gross; Alessandro A. Por...
• Keywords: Artifact (error)

Image artifacts caused by metal knee implants in 1.5T and 3T magnetic resonance imaging (MRI) systems complicate imaging-based diagnosis of the peri-implant region after total arthroplasty. Alternatively, metal-free prostheses could effectively minimize MRI safety hazards offer potential for higher quality diagnostic images.A novel arthroplasty device composed BIOLOX delta, an alumina matrix composite (AMC) ceramic, was tested a (MR) environment. American Society Testing Materials test methods were used evaluating magnetically induced displacement force, torque, radiofrequency-induced heating, MR image artifact.Magnetically force torque results AMC ceramic indicated that these effects do not pose known risk clinical environment, as assessed field. Moreover, minimal heating observed. In addition, demonstrated (7 mm) comparison to cobalt-chromium (88 mm). The extremely low susceptibility (2 ppm) underlines it is nonmetallic nonmagnetic material well suited manufacturing Safe orthopaedic implants.The can be regarded Safe, suggested absence from exposure this implant presents advantage being scanned with superior compared alternative on market.