The Journal of Bone and Joint Surgery, Vol 62, Issue 6 981-985, Copyright © 1980 by Journal of Bone and Joint Surgery, Inc
Cephalothin and cefamandole penetration into bone, synovial fluid, and wound drainage fluid
DJ Schurman, HP Hirshman and DS Burton
Concentrations of cephalothin or cefamandole were measured in serum, bone,
synovial fluid, and wound drainage fluid in fifty-seven patients undergoing
total hip or knee replacement after a two-gram intravenous bolus injection.
The concentrations were similar in serum and synovial fluid for both
antibiotics; however, in bone and drainage fluid the concentration of
cefamandole was higher by a factor of three. Concentrations of the same
antibiotic at the hip and knee were not significantly different even though
a tourniquet was used for the knee replacement procedures. Clinical
Relevance: The antibiotics penetrate bone and enter synovial fluid so
rapidly that it is unnecessary to administer prophylactic antibiotics prior
to the time of surgery.