Article Figures & Data
Figures
- FIGURE 1.
A 79-y-old woman with unilateral right hip prosthesis for 15 y. Focus of increased MDP activity is seen at distal aspect of prosthesis, and second focus is seen proximally (planar image on left). Patient's annexin V study was read as negative (planar image on right).
- FIGURE 2.
A 77-y-old woman with bilateral hip replacements. Left hip prosthesis shows normal 99mTc-annexin V activity, and right shows increased annexin V uptake on planar image (arrow). Tracer uptake is better visualized on representative coronal SPECT slices shown on right (arrows).
- FIGURE 3.
A 78-y-old woman with history of subcapital fracture of her left femur, leading to avascular necrosis and total hip replacement. Patient's bone scan shows diffusely increased MDP uptake around left hip prosthesis (planar image on left). Annexin study shows increased linear uptake on lateral aspect of prosthesis (planar image on right; arrows).
- FIGURE 4.
A 76-y-old man with painful unilateral right knee prosthesis and signs of loosening on plain radiograph. Linear increased activity around prosthesis on bone scan (planar image far left; arrows) is demonstrated, with similar activity noted on anterior (Ant) and posterior (Post) views of annexin study (planar images; center and right).
- FIGURE 5.
A 69-y-old woman with left knee prosthesis, showing focal increased annexin activity in left medial tibial plateau (arrow) but no evidence of infection.
Tables
- TABLE 1
Characteristics of Study Patients Undergoing Revision Surgery for Hip or Knee Prosthesis
Patient no. Sex Age (y) Location Findings/annexin Distribution Infection 1 F 80 Hip Increased right femoral prosthesis Focal Positive 2 M 84 Hip Negative Negative Negative 3 F 79 Hip Negative Negative Negative 4 F 78 Hip Increased left acetabulum + prosthesis Linear Positive 5 F 69 Knee Increased left medial tibial plateau Focal Negative 6 M 85 Knee Increased medial prosthesis Multifocal Positive 7 F 77 Hip Increased right + left lateral acetabulum Focal Positive
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