Figure 3From: The implications of 18F-FDG PET for the diagnosis of endoprosthetic loosening and infection in hip and knee arthroplasty: Results from a prospective, blinded study 18F-FDG-PET showed periacetabular uptake (pattern 4a) as evidence of loosening of the cup confirmed by surgery. A bacterial infection was excluded. Loosening of the shaft within the cement bed is not adequately depicted by 18F-FDG-PET.Back to article page