title: Combined nuclear and digital subtraction contrast arthrography in painful knee prosthesis.
abstract: The evaluation of a painful knee prosthesis remains a difficult problem for both orthopaedic surgeons and radiologists. We have compared digital subtraction arthrography with nuclear arthrography in 7 patients with a painful knee prosthesis. Three patients showed a loose tibial component, demonstrated by both digital subtraction and nuclear arthrography. All 3 underwent revision of their prosthesis. One patient had an equivocal digital subtraction arthrogram and negative nuclear arthrogram, while both studies were negative in the 3 remaining patients. Nuclear arthrography is a simple procedure and can provide useful additional information when combined with digital subtraction arthrography.
authors.affiliation: Department of Radiology, Royal Infirmary, Glasgow, UK.
authors.forename: J
authors.initials: J
authors.lastname: Namasivayam
authors.forename: F W
authors.initials: FW
authors.lastname: Poon
authors.forename: A
authors.initials: A
authors.lastname: Forrester
authors.forename: A S
authors.initials: AS
authors.lastname: Bryan
authors.forename: G F
authors.initials: GF
authors.lastname: Cuthbert
authors.forename: J H
authors.initials: JH
authors.lastname: McKillop
mesh_terms: D000368:Aged; D001175:Arthrography / Q000379:methods; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging*; D007720:Knee Prosthesis; D008297:Male; D004369:Pentetic Acid; D011475:Prosthesis Failure; D011877:Radionuclide Imaging; D013382:Subtraction Technique
chemical_list: D004369:Pentetic Acid