Changes in C-reactive protein and erythrocyte sedimentation rate after hip fractures.

Serial measurements of C-reactive protein (CRP) levels and erythrocyte sedimentation rates (ESR) were performed during the week after operation in 140 patients with hip fractures. There was no selection, and patients with minor or major complications before or after operation were included. In uncomplicated cases, the ESR was variably raised during the first week, whereas the CRP showed a distinct pattern with a rapid increase on the second day; it then decreased by the 7th day. In cases with early postoperative bronchopneumonia and deep wound infection, the CRP was high, but minor infections did not influence the usual levels. Complications had no effect on the ESR during the 1st week.