A METHOD FOR BONE-CEMENT INTERFACE THERMOMETRY - AN INVITRO COMPARISON BETWEEN LOW-TEMPERATURE CURING CEMENT PALAVIT AND SURGICAL SIMPLEX-P

Previous temperature measurements at the bone-cement interface have all shown large variations. To evaluate more precisely the temperature profiles during cement curing, a new experimental model was developed. Eight thermocouple electrodes at the bone-cement interface for each test specimen were used for continuous temperature recordings. Temperature profiles of Palavit(R) was compared with those of Surgical Simplex(R) P in an in vitro model using isolated pig femurs. Defects of 12 x 17 mm in the femoral metaphysis were filled with cement. In six tests with each type of cement, Palavit(R) peaked at a temperature of 50 +/- 0.5-degrees-C, whereas Surgical Simplex(R) P peaked at 60 +/- 0.7-degrees-C. Core temperatures reached peak values of 70 +/- 0.8-degrees-C and 95 +/- 2.2-degrees-C for Palavit(R) and Surgical Simplex(R) P, respectively.