Lombard's paradox

The Lombard 's paradox describes a function from the standpoint of classical anatomical attribution seemingly paradoxical function of the hamstrings muscles in humans.

The phenomenon has been described by the American physiologist Lombard beginning of the 20th century. The " paradox " is here seen that, with fixation of the foot and / or pelvic ischiocrural the muscles for stretching the knee joint contributes. This function is in the classical sense of the muscles of the front of the thigh ( quadriceps femoris) attributed the hereafter has one of the hamstrings muscles antagonistic function. The doctor, Klaus Wiemann wrote this among other things: