x-ray of lumbosacral spine: bony ankylosis of vertebral bodies at L5 and S1
x-ray of lumbosacral spine: bony ankylosis of vertebral bodies at l5 and s1
x-ray of lumbosacral spine: bony ankylosis of vertebral bodies at L5 and S1 (procedure)
x-ray of lumbosacral spine: bony ankylosis of vertebral bodies at l5 and s1 (procedure)