What does femur length mean

The standard for femur length is generally calculated from the thirteenth week of pregnancy. The fertilized egg usually begins to implant in the early stages of pregnancy. Then, the standard for femur length is used to refer to the different reproductive stages of the fetus to understand the baby's development.

Femur length actually refers to the length of the thigh bone. The femur is the largest long bone in the human body. It and the humerus are both typical long tubular bones in the human body. The humerus is located in the upper arm and is also called the upper arm bone.

Femur length is an indicator used by doctors to observe whether the fetal development is normal when they perform pregnancy check-ups on pregnant women using B-ultrasound or color ultrasound.

Femur length is just a measurement, and different people measure in different locations, so there will be a little difference. Under normal circumstances, the reason why the femur is shorter is sometimes related to measurement, sometimes to genetic factors, and sometimes to nutrition.

Causes and measures for short femur length:

1. Measurement errors: When measuring the femur length after 30 weeks of pregnancy, an error of up or down two weeks is allowed. As long as it is within this range, pregnant mothers do not need to worry too much.

2. Fetal maldevelopment: If the femur length measurement is very different from the standard value, it is very likely that the fetus is maldeveloped. Pregnant women should monitor the health of their babies and themselves. If they have irregular abdominal pain, spotting, etc., they should go to the hospital for examination in time.

3. Congenital femoral length: Some fetuses have congenital femoral length differences due to genetic factors. Experts say that congenital femur length will affect the height of the baby at birth, but this situation can be changed. Now the baby's acquired nutrition has far exceeded the influence of congenital factors. Therefore, after the baby is born, try to let him drink more milk, supplement more calcium, and strengthen physical exercise, which is very helpful for the baby's height.

4. Calcium deficiency: Calcium deficiency during pregnancy may affect the length of the femur. Pregnant women are advised to supplement calcium and high-quality protein appropriately, and eat more calcium-rich foods in their diet, such as milk, lean meat, bone soup, etc. In addition, pregnant women should get more sun exposure to facilitate calcium absorption.