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Limb Length Discrepancy Heel Lifts
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Limb Length Discrepancy Heel Lifts

سه شنبه 27 تير 1396
2:20
Dorothea Moose
3: تعداد بازدید
Limb Length Discrepancy Heel Lifts
Overview
Have you noticed that your pants always fit a little weird or that you are always leaning to one leg when standing for awhile? If so, one of your legs may be longer than the other. This is known as a leg length discrepancy. There are two main reasons for a leg length discrepancy. One reason is that one of your leg bones (tibia or femur) is longer on one side. This is referred to as a true leg length discrepancy because the actual length of your bones is different. A second reason is that your pelvic bone may be rotated on one side making it appear that one leg is longer than the other. This is referred to as an apparent leg length discrepancy because the actual length of your leg bones is not different. In order to figure out if you have a true or apparent leg length discrepancy, your doctor may take an x-ray to measure the length of your leg bones or a simple measurement from your belly button to your ankle can help determine the reason. Over time, the leg length difference can cause stress on your low back, hips and knees, which may cause pain or discomfort.Leg Length Discrepancy

Causes
There are many What causes painful Achilles tendon? of leg length discrepancy. Some include, A broken leg bone may lead to a leg length discrepancy if it heals in a shortened position. This is more likely if the bone was broken in many pieces. It also is more likely if skin and muscle tissue around the bone were severely injured and exposed, as in an open fracture. Broken bones in children sometimes grow faster for several years after healing, causing the injured bone to become longer. A break in a child's bone through the growth center near the end of the bone may cause slower growth, resulting in a shorter leg. Bone infections that occur in children while they are growing may cause a significant leg length discrepancy. This is especially true if the infection happens in infancy. Inflammation of joints during growth may cause unequal leg length. One example is juvenile arthritis. Bone diseases may cause leg length discrepancy, as well. Examples are, Neurofibromatosis, Multiple hereditary exostoses, Ollier disease. Other causes include inflammation (arthritis) and neurologic conditions. Sometimes the cause of leg length discrepancy is unknown, particularly in cases involving underdevelopment of the inner or outer side of the leg, or partial overgrowth of one side of the body. These conditions are usually present at birth, but the leg length difference may be too small to be detected. As the child grows, the leg length discrepancy increases and becomes more noticeable. In underdevelopment, one of the two bones between the knee and the ankle is abnormally short. There also may be related foot or knee problems. Hemihypertrophy (one side too big) or hemiatrophy (one side too small) are rare leg length discrepancy conditions. In these conditions, the arm and leg on one side of the body are either longer or shorter than the arm and leg on the other side of the body. There may also be a difference between the two sides of the face. Sometimes no cause can be found. This is known as an "idiopathic" difference.

Symptoms
Faulty feet and ankle structure profoundly affect leg length and pelvic positioning. The most common asymmetrical foot position is the pronated foot. Sensory receptors embedded on the bottom of the foot alert the brain to the slightest weight shift. Since the brain is always trying to maintain pelvic balance, when presented with a long left leg, it attempts to adapt to the altered weight shift by dropping the left medial arch (shortening the long leg) and supinating the right arch to lengthen the short leg.1 Left unchecked, excessive foot pronation will internally rotate the left lower extremity, causing excessive strain to the lateral meniscus and medial collateral knee ligaments. Conversely, excessive supination tends to externally rotate the leg and thigh, creating opposite knee, hip and pelvic distortions.

Diagnosis
Infants, children or adolescents suspected of having a limb-length condition should receive an evaluation at the first sign of difficulty in using their arms or legs. In many cases, signs are subtle and only noticeable in certain situations, such as when buying clothing or playing sports. Proper initial assessments by qualified pediatric orthopedic providers can reduce the likelihood of long-term complications and increase the likelihood that less invasive management will be effective. In most cases, very mild limb length discrepancies require no formal treatment at all.

Non Surgical Treatment
Treatment of leg length inequality involves many different approaches, which vary among osteopaths, physiotherapist and chiropractor and whether the LLD is functional or structural. Thus is a combination of myofascial release (massage) & stretching of shortened muscles. Manipulation or mobilization of the spine, sacro-iliac joint (SIJ), hip, knee, foot. Orthotics, shoe lifts can be used to treat discrepancies from two to six cm (usually up to 1 cm can be inserted in the shoe. For larger leg length inequalities, the shoe must be built up. This needs to be done for every shoe worn, thus limiting the type of shoe that the patient can wear). Surgery (epiphysiodesis, epiphyseal stapling,bone resection).
LLD Insoles
Surgical Treatment
Surgeries for LLD are designed to do one of three general things ? shorten the long leg, stop or slow the growth of the longer or more rapidly growing leg, or lengthen the short leg. Stopping the growth of the longer leg is the most commonly utilized of the three approaches and involves an operation known as an epiphysiodesis , in which the growth plate of either the lower femur or upper tibia is visualized in the operating room using fluoroscopy (a type of real-time radiographic imaging) and ablated , which involves drilling into the region several times, such that the tissue is no longer capable of bone growth. Because the epiphyseal growth capabilities cannot be restored following the surgery, proper timing is crucial. Usually the operation is planned for the last 2 to 3 years of growth and has excellent results, with children leaving the hospital within a few days with good mobility. However, it is only appropriate for LLD of under 5cm.
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