What should I do if a boy's legs are not straight?

A pair of straight long legs will make many people envious. But in addition to some congenital factors, some later habits will also affect our leg length and leg shape. For example, bad sitting posture can easily form O-shaped legs. So, what should boys do if their legs are not straight? In fact, there is no good way, especially if it is a bone problem, it is difficult to solve. If it is a walking posture problem, it can be adjusted.

The standard leg shape involves factors such as leg length, leg-to-body ratio, calf circumference, and calf length.

The narrow sense of leg length, the real leg length is scientifically called the total leg length, and the narrow sense of lower limb length, the real lower limb length is scientifically called the total length of the lower limb. Both are difficult to measure, and academically, height minus sitting height is generally used to express leg length. Mascherano-leg length index = [(height-sitting height)/sitting height] × 100, is the most reliable and most reference-worthy quantitative indicator for discussing leg-to-body ratio, and lays the foundation for studying leg-to-body ratio.

Leg length is expressed by perineum height or height minus sitting height: for the same height, women have longer legs than men; but since the leg-to-body ratio is positively correlated with height, the taller the height, the larger the leg-to-body ratio; the average and extreme values ​​of the leg-to-body ratio and the Maslow-leg-length index are both slightly larger in men than in women. Therefore, leg length is not a female characteristic.

Thigh circumference is the horizontal circumference of the thigh through the gluteal groove, also known as the maximum circumference of the thigh, not the circumference of the middle thigh. Height-thigh circumference index = (thigh circumference/height) × 100, thigh length circumference index = (thigh circumference/thigh length) × 100; these two indices are greater in women than in men, and the difference is significant. In other words, women of the same height have thicker thighs; women's legs are relatively thick and short, while men's legs are relatively thin and long. This is related to the gender difference in body fat distribution. Estrogen inhibits the accumulation of fat in the abdomen and increases the accumulation of fat in the buttocks and thighs, while androgen is just the opposite. In addition, women's muscles tend to be distributed in the lower limbs; compared with men, women's lower limb muscle mass accounts for a higher proportion of the whole body.

When measuring, the thighs must be parallel to the ground and at right angles to the calves. You must not sit directly on the ground. This is because when you sit on a stool and straighten your trunk, the angle between the thighs and calves changes from 90° to 180°, and your trunk naturally contracts. Secondly, the spine and sacrum between the left and right shoulder blades should be kept in a vertical line, with both places close to the pillars. You must not let your lower back stick to the wall.

Leg length = height - sitting height: The average for Asian men is 78.8cm, and the average for Asian women is 72.37cm; the average for European and American men is 84.19cm, and the average for European and American women is 77.74cm.