MRI Visualization of Polyethylene Post Fractures in Posterior Stabilized Total Knee Arthroplasty.
case_series · Level IV
Where this comes from
- Record sourced from PubMed, PMID 33759559.
- Also identified by DOI 10.2214/AJR.21.25669.
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Abstract
Polyethylene post fracture is a recognized complication of posterior stabilized total knee arthroplasty. Two radiologists retrospectively reviewed MRI examinations of 19 reported post fractures in 18 patients; all fractures were subsequently confirmed surgically with no false-positive cases. All post fractures were visualized as a combination of post deformity and signal-void fragment in a joint recess. A metal artifact reduction 3D multispectral imaging sequence improved fracture visualization versus conventional sequences in 47% of cases.
Medical subject headings
- Arthroplasty, Replacement, Knee
- Knee
- Knee Prosthesis
- Magnetic Resonance Imaging
- Polyethylene
- Prosthesis Failure