Leg Length Discrepancy

Causes, Effects, and Detection Methods of Short and Long Legs

With the popularity of computers and smartphones, most urban dwellers have begun to adopt incorrect postures while using smart products, leading to issues such as neck pain and becoming part of the “head-down” group. The spine is key to supporting the body’s weight, and when the head is frequently bent downwards, the physiological curvature of the cervical spine changes, resulting in the aforementioned “head-down” group. Prolonged computer use can alter the curvature of the spine, which in turn increases the burden on the intervertebral discs. Research indicates that for every 15 degrees the head bends down, it adds a load of 10 pounds to the cervical spine; generally, the load on the neck for typical “head-down” individuals ranges from 20 to 30 pounds of pressure. Once the nervous system and muscle tissues are affected, it can lead to pain and the occurrence of various diseases.

There are two main categories of leg length discrepancy: structural leg length discrepancy and functional leg length discrepancy:

1. Structural leg length discrepancy: This may be a rare congenital defect or a change in actual length due to previous fractures in the lower limbs and pelvis that healed improperly.

2. Functional leg length discrepancy: Also known as apparent leg length discrepancy, this refers to a condition where visual differences in leg length occur due to prolonged poor posture, or it may be caused by other issues such as spinal misalignment or herniated discs.

Common Causes and Effects of Leg Length Discrepancy

Common causes of long and short legs

Only a few people are born with structural long-short feet. Most people have functional long-short feet. The common causes are improper living habits, such as often twisting the feet when sitting, and incorrect walking posture, that is, one knee continues to point toward the other. If you have pigeon-toed or splayed feet, have flat feet or high arched feet in one foot, or frequently participate in unilateral sports such as tennis, there is a chance that the pelvis will shift and indirectly cause leg length. Therefore, Everyone should try to avoid or correct the above behaviors as soon as possible.

The influence of leg length

Many people think that the inconsistent length of the legs will only cause visual unsightliness, but they do not know that long or short legs can cause many hidden diseases. In addition to the uneven weight distribution between the left and right sides of the body, which makes it easy to fall while walking, it can also cause wear on the intervertebral discs and joints, because this will change the center of gravity or make the center of gravity unbalanced. In the long run, it will also affect the walking posture, leading to various arthritis, back pain, plantar fasciitis and other pains. The more serious consequence is that the spine will compress the organs, which may cause certain cardiovascular diseases and gastrointestinal diseases. Internal diseases and even constipation problems may be related to the length of the legs, which cannot be ignored!

Method for detecting leg length discrepancy

If you want to roughly estimate whether you have a leg length discrepancy, you can simply lie on your bed and stretch your body, then have someone help check if your two heels are of different lengths. Of course, for an accurate diagnosis, it is recommended to go to a professional chiropractic clinic for an X-ray examination for further analysis.

Treatment Methods

The cure rate for leg length discrepancy is relatively high, especially for functional leg length discrepancy. Chiropractors generally first identify the underlying causes of the discrepancy, such as pelvic tilt, scoliosis, and muscle imbalances, and address these root issues. They may also create custom orthotic insoles or heel lifts for patients to help restore the pelvis and lumbar spine to normal levels. Therefore, patients should seek a professional chiropractor for examination and treatment as soon as possible to avoid worsening their condition by believing in unproven remedies without clinical medical basis.