The grid radiograph. A simple technique for consistent high-resolution visualization of the hip.
The grid radiograph, a new technique for radiographic evaluation of total hip replacements, ensures reproducible positioning of the hip and the x-ray beam. When this method was used, the images of stable acetabular and femoral components on one radiograph could be superimposed perfectly on the images of these components on subsequent radiographs. Subtle shifts in the positions of the components, such as tilting of the femoral surface replacement, subsidence of the femoral component, or migration of the acetabular component, were detected. When used with high-contrast radiographic technique and film, the implant-bone interfaces were depicted better by this method than by others. Grid radiographs can be used for detailed prospective evaluation of total hip replacements and are of practical value in counseling patients about the probable durability of the replacement.
D000077:Acetabulum / Q000000981:diagnostic imaging; D005270:Femur Head / Q000000981:diagnostic imaging; D006621:Hip Joint / Q000000981:diagnostic imaging*; D006622:Hip Prosthesis; D006801:Humans; D011859:Radiography; D013679:Technology, Radiologic