As they age, their legs turn inward in the opposite direction, forming knock knees. In general, the legs straighten by the time the child reaches 7 or 8 years old. But in adults, knock knees becomes much less common, as their legs have already fully developed. For many adults, only a few factors trigger late onset genu valgum. Knock knee (also called "knock-knee deformity," "knock-knee syndrome," "knocked knee" or "genu valgum") is an incorrect alignment around the knee that can affect people of all ages. If left untreated, it can lead to knee pain and joint degeneration.
Adults can have Knock Knee due to genetic conditions that they have acquired from one or both of their parents. These conditions are rare, and one whose parent(s) or family has a history of skeletal abnormalities, it is possible they will have Knock Knee when they are born or at some point in their lives. Genu valgum, known as knock-knees, is a knee misalignment that turns your knees inward. When people with knock-knees stand up with their knees together, there’s a .