Spinecare Topics

  • By: ISA Content Team
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Caring for your Spine
Walking and the Back

The most common cause of functional LLI is excessive pronation while standing or walking.  Pronation refers to rolling in of the foot while weight bearing pronation results in dynamic (functional) shortening of the limb.  Even a few millimeters difference in leg length may lead to unequal sharing of weight on spinal (facet) joints which can contribute to low back pain.  Chronic abnormal strain on the pelvis and the low back may cause or accelerate to degenerative changes in the back.

There are many signs and symptoms associated with leg length inequality that include: low back pain, uneven iliac crests, curvature of the spine, hip pain and recurrent sciatic pain. It is felt that a leg length deficiency of 3/16 of an inch to º of an inch is enough to contrite to increase the risk for low back pain. There are different methods which physicans can use to assess leg length.

Heel Spur:  A heel spur refers to the degenerative outgrowth of bone along the bottom of the heel.  A heel spur may or may not be painful.  The presence of a heel spur indicates that there has been a pattern of abnormal biomechanical strain on the tissues of the bottom of the foot (plantar fascia).  A painful heel spur will result in favoring of the limb with an abnormal shift of weight onto the non-painful leg during walking.

Heel Pad Atrophy:  Heel pad atrophy occurs as part of the aging process. It occurs when the fat pad which cushions the heel become thinned.  Atrophy of the heel pad provides less protection of the heel during the heel strike phase of gait and also results in less shock absorption at the heel during walking and other weight bearing activities.  This can result in chronic weight-bearing heel pain.

High-Arched Foot:  A high arch foot is often not flexible.  There is usually less movement into pronation during weight bearing phase of walking.  The foot is subsequently more rigid resulting in a harder heel strike.  A high arched or supinated foot tends to be more rigid and stiff therefore less likely to adapt well when walking on various terrains.  The high-arched foot is an inefficient shock absorber resulting in greater stress upon the knees, hips and low back.

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To learn more about your spine. spinehealth, and available spinecare go to the International Spine Assocition (ISA) at www.spineinformation.org. The primary mission of the ISA is to improve spinehealth and spinecare through education. The ISA is committed to disseminating need-to-know information throught the World Wide Web in numerous languages covering many topics related to the spine, including information about spine disorders, spine heath, advances in technology and available spinecare



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