Do normal individuals have legs of equal length?

Update Date: 2024-06-05 Source: Network

Generally speaking, our legs are of the same length, which ensures our stable movement. If the lengths of the two legs are different, it will definitely affect the balance of the limbs. Some people may find that the lengths of their two legs are not the same when measuring their leg length, but their functions are normal. In this case, we need to have a correct understanding of it. So, do normal people have legs of the same length? Let's take a look at it below.

1. Do normal people have legs of the same length?

Strictly speaking, the left and right legs are indeed not of the same length, but this error is negligible because there is buffer space at the knees. There is an error in measuring height in the morning and after working for a day. As long as walking is normal, there is no difference in length. If the difference between the two legs exceeds 5 millimeters, there will be a noticeable feeling when walking. Surgical treatment is needed when the difference exceeds 1 centimeter.

2. Types of unequal leg length

Structural lower limb inequality: This is caused by inconsistent lengths of the lower limb bones (femur or tibia), which is a kind of bone deformity. Causes of bone deformity include not only congenital factors, but also fractures, osteomyelitis, rheumatoid arthritis in adolescents, and other reasons.

Functional lower limb inequality: This occurs when the lengths of the bones are the same, but one side of the lower limb is shorter due to reasons such as pelvic tilt, hip dislocation, muscle imbalance, cerebral palsy, or stroke sequelae. Most patients with unequal leg lengths belong to this category.

3. Correction methods for unequal leg lengths

Structural unequal leg lengths: If the difference between the two legs does not exceed 1 centimeter, orthotic insoles can be used for correction. The method is simple: just place the insole under the shorter leg, and the height of the insole should be equal to the difference between the two legs. Orthotic insoles need to be replaced, and adult patients can replace them every two years. However, for children who are still growing, the height of the insole needs to be adjusted according to their growth, and they can be replaced every 4 to 6 months.

Functional unequal leg lengths: Pelvic tilt can be corrected through some exercise movements, but if there is spinal curvature, surgical correction is the only option.