Knee-joint temperature measurement using a differential thermistor thermometer.

A simple method for measuring joint inflammation with a differential thermistor probe thermometer was applied to acute synovitis of the knee. Temperature assessments were made immediately before and serially after intra-articular steroid therapy. The method was capable of showing a significant difference in temperature between inflamed and normal knees. Knee temperature assessments correlated well with clinical parameters and were essentially independent of room temperature.