Radiographic changes in bone dimensions in asymptomatic cemented total hip arthroplasties. Results of nine to thirteen-year follow-up.
On twenty-six cemented total hip replacements that had been followed for an average of 10.4 years (range, nine to thirteen years), a retrospective radiographic study was done to assess dimensional changes in the cross section of the bone in a group of asymptomatic patients. Cortical dimensions were measured on radiographs and were normalized using a radiographic distortion factor that was derived from the width and length of the prosthesis. The data were then analyzed using a least-squares method. Analyses were performed for the men, for the women, and for the combined group. The results for all three groups showed a significant decrease in cortical thickness as well as widening of the medullary canal, but no periosteal expansion.
Comadoll
J L
JL
Department of Orthopaedic Surgery, Hennepin County Medical Center, Minneapolis, Minnesota 55415.
Sherman
R E
RE
Gustilo
R B
RB
Bechtold
J E
JE
D000328:Adult; D000368:Aged; D001843:Bone Cements; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies
D001843:Bone Cements