Combined nuclear and digital subtraction contrast arthrography in painful knee prosthesis.
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.
Namasivayam
J
J
Department of Radiology, Royal Infirmary, Glasgow, UK.
Poon
F W
FW
Forrester
A
A
Bryan
A S
AS
Cuthbert
G F
GF
McKillop
J H
JH
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
D004369:Pentetic Acid