Intervertebral Disc Injury

• Once you have a tear in the disc, positions of losing the lumbar lordosis (eg. gardening, cooking or sustained slouched sitting/driving) allows the nucleus to move down the internal tear in the disc.
• This deforms the shape of the disc and the disc bulges (disc protrusion).
• If the disc bulges far enough to compress the nerve behind it symptoms in the leg such as aching, burning, sharp pain, pins and needles, numbness or weakness can be felt.
• In about 40-50% of lumbar disc problems, the disc bulges backwards but also significantly more to one side

This sideways component must be addressed with a specific LATERAL BIASED McKenzie exercises

A lateral disc bulge can contribute to a rotated pelvis or standing list (trunk shifted to one side).
• These lateral (more one sided) disc bulges often result in asymmetrical symptoms (eg. Pain going down one leg, or back pain that is only on one side of the back). These subgroups of disc problems often display a preference to lie on one side, and may worsen with walking (unlike the more common situation of walking easing symptoms).
This asymmetrical loading can cause symptoms down the chain (eg. knee, foot, shin, Achilles) or up the chain (neck tension, headaches, nausea or thoracic pain) WITH OR WITHOUT LOW BACK PAIN BEING PRESENT!!

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