Abstract
We gave physical therapy to a patient with total right knee arthroplasty. After a knee operation, in general, the muscular strength of the quadriceps femoris decreases rapidly, and it is difficult to recover well. In this case, we performed physical therapy for imperfect contraction of the quadriceps femoris in extension of the knee joint. For evaluation of the physical therapy effect, we measured the center of gravity in the standing posture before and after physical therapy and examined its characteristics. As a result of physical therapy, the contraction of the quadriceps femoris muscle in knee extension was improved, and the standing posture with knee extension became stable. Through this case, the following was clear, it is important to consider the alignment before the knee operation and we were able to measure the effect of physical therapy by using a gravicorder.
