cause of legs hurting and giving way
Patient Comments Read 40 Comments Share Your Story. Trauma is the most obvious cause of leg pain. Falls, near falls, and twisting injuries can damage bones, muscles, and joints of the leg or a combination of all three. Back pain, due to injury, can inflame the sciatic nerve and cause sciatica. This is a pain that radiates down the leg that follows the path of one of the many nerve roots that leave the spinal cord and make up the sciatic nerve. Sciatic pain usually begins in the back and radiates to the buttock and into the thigh.
New, persistent leg pain certainly warrants a visit to your doctor for evaluation. Leg pain can have many causes, but your description of aching after prolonged standing or sitting suggests a possible buildup of fluid in the leg veins (venous congestion). Venous congestion occurs when the valves in your leg veins don't work properly to keep blood moving efficiently from your legs to your heart.