1, o type
Medically, it is called "genu varus", which is a deformed disease characterized by the fact that when the lower limbs are naturally straight or standing, the medial malleolus of both feet can touch each other but the knees cannot be brought together.
Calcium deficiency and heredity are two foundations for the formation of O-legs, but the more direct reasons are walking posture, standing posture, sitting posture and some exercise. Walking with splayed feet, standing relaxed, wearing high heels, sitting in a dish and squatting for a long time will give the knee joint outward strength, which will pull the lateral collateral ligament of the knee joint, leading to the long-term relaxation of the lateral collateral ligament of the knee joint.
2. type x
X-leg is called genu valgus, which can be caused by more than 40 diseases, but more than 70% of genu valgus is caused by rickets. The definition of "X" leg is: when the two lower limbs are naturally straight or standing, the knees can touch each other, and the medial malleolus of the feet are separated and cannot be brought together.
It is caused by congenital inheritance, acquired malnutrition and incorrect sitting and walking posture in childhood, such as adduction and pronation of femur, abduction and supination of tibia.
3. Cattle type
It is usually caused by abnormal walking posture. The tibia (the bone on the inside of the calf) is everted at the knee joint, but it is in the knee joint.
There is a slight eversion in the ankle joint. So it seems that the knee joint is straight, but the whole calf is O-shaped.
Extended data:
correct
X-leg correction: open your legs in two places, separate your knees to both sides as far as possible, hold out your chest, bend your knees and squat for a while, slowly lift your heel, then lift it repeatedly and put it down until your calf feels sore.
O-leg correction: sit up straight, bend your knees left and right, then clamp your legs inward hard, keep your knees as close as possible, press your knees with your hands to the maximum, pause for two to three seconds, and then recover. Require the knee joint to exert force slowly.
Cattle correction: sitting posture, feet and soles close together, knees propped outward, as close as possible to the ground; Grasp both ankles with both hands, press the upper body down to the lowest point, feel the obvious stretching feeling on the inner thigh, keep the posture 15-30 seconds, relax and repeat.