Spondylolysis is a fracture of the bone that holds the upper and lower facet joints of the spine together. The place where the separation occurs is called the pars interarticularis.
Research shows a direct link between strenuous, intense sports activities and spondylolysis. Doctors think fatigue fracture is the most likely cause of spondylolysis. Athletes between ages 5 and 15 are affected most often.
Early treatment is the key to healing this bone defect.