Some common causes of leg pain in elderly patients include claudication, according to Mayo Clinic; osteoarthritis, according to the Arthritis Foundation; and fractures caused by osteoporosis, according to MedicineNet. The leg pain of claudication is caused by too little blood getting into the area. The pain is especially pronounced during exercise.
As the claudication progresses, the person may feel pain even when he is not performing strenuous exercise or even when he is at rest, claims Mayo Clinic. He may feel an aching or burning in his legs or feel weak. A severe case of claudication might cause ulcers to develop on the patient's lower legs.
Osteoarthritis affects the joints, says the Arthritis Foundation. Therefore, the leg pain an elderly person feels is most likely in the knees. This happens because, over time, the cushioning cartilage between the joints in the knee start to wear away until the bones begin to rub against one another. Severe cases of arthritis of the knee can be treated through a partial or full knee replacement.
Osteoporosis occurs when the bone becomes less dense, says MedicineNet. Often, a patient does not know she has osteoporosis in the leg until the bone becomes so thin that it fractures severely enough to cause pain.