The pre- and postoperative serum levels of creatine kinase (CK) were a
nalyzed in 56 patients operated with three different breast reconstruc
tive procedures. Thirteen patients were operated with the lateral thor
acodorsal flap (LTD), 23 by the latissimus dorsi flap (LD), and 20 by
the pedicled transverse rectus abdominis musculocutaneous (TRAM) flap.
Nineteen patients in the LD and TRAM groups had received postmastecto
my radiotherapy. The operations caused a significant rise in the serum
levels of CK, and the highest levels were found on the first postoper
ative day: LTD, 5.4 mu kat per liter; LD, 8.1 mu kat per liter; and TR
AM, 7.3 mu kat per liter. There was no significant difference in CK le
vels between the groups. The irradiated patients did not show increase
d CK levels when compared with nonirradiated patients.