Numbness on the leg may feel like loss of sensation or a cold, icy feeling in one or more areas of the leg. Leg pain can be intermittent or constant and can range from a dull ache to a searing, throbbing or burning sensation.
Leg pain may be the symptom of variety of underlying causes or conditions and getting a correct diagnosis is essential to inform the most effective course of treatment.
Leg pain and numbness after back exercise may be the symptom of one of the following:
- Nerve in the leg may is inflamed, compressed or degenerated as a result of mechanical or chemical irritants. Usually the nerve pain originates from a nerve roots of the lumbar and/or sacral spine. The leg pain that originates from a problem in the nerve roots of the lumbar and/or sacral spine is called radiculopathy (the other term is sciatica). The characteristics of the pain depend on the specific nerve root(s) affected. Research indicates that 95% of radiculopathy in the lumbosacral spine occurs at the L4-L5 and L5-S1 levels. The pain from these roots is characterized by: (a) weakness in the hip, thigh and/or foot muscles, (b) pain that originates in the lower back or buttock and travels down the thigh, calf and foot and (c) numbness in the calf, foot and toes.
- Leg pain occur due to problems with the arteries and/or veins in the leg. Blood vessels in the leg may get occluded, compressed or become inflamed. Leg pain due to reduced blood supply is called vascular claudication. This condition occurs when one or more arteries in the leg are blocked, causing reduced or complete loss of blood supply to the leg muscles.
- Musculoskeletal problems. Pain that originates from muscles and/or joints of the pelvis or hip can travel down into the leg and may also affect the foot. The hip joint, sacroiliac joint and the piriformis muscle are common structures that may cause leg pain. Pain from these structures can mimic radiculopathy or nerve pain. Sacroiliac (S1) joint dysfuction may cause pain that originates in the lower back and buttock area and pain moves to the back and side of the thigh and increases when sitting on a hard surface and/or when standing from a seated position. https://www.nhs.uk/conditions/back-pain/
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