One hundred and fifty cases were followed up after quadricepsplasty. Hamstring M. were used in 112 cases. M. rectus femoris or obliquis abdominis was used in 38 cases. The validity and force analysis of such two kinds of operation were analyzed and compared. It was confirmed that the power of the transferred muscle depended on the angle between the force line and the neutral axis of the joint, provided the arm of the force and the area of transection of the muscle were constant. The bigger the angle was, the longer the arm of the force was, and the smaller was the labour. If this angle was negative or the knee joint was in a position of flexion deformity, the smaller the negative angle was, the smaller the componend force of the joint was, and the larger was the component force of extension.
Citation： Quan yi,Ke Jiamin,Sun Jifa,et al.. BIOMECHANICAL STUDY OF QUADRICEPSPLASTY. Chinese Journal of Reparative and Reconstructive Surgery, 1995, 9(4): 193-196. doi: Copy