Dr. Ben Valley, an OrthoCincy spine specialist, explained, "In younger people, it tends to be from what's called a PARS fracture, which can happen when you are young and going through puberty.

Those born with congenital pars defects or fractures -- abnormalities in the part of the bone in the back of the spine that keeps the joints in place -- may have their bones slip at an earlier age ...

Sites of increased scintigraphic uptake in the posterior elements of the lumbar spine and complete or incomplete fracture in the pars interarticularis were compared for these two sports. Results: ...