x-ray of lumbosacral spine: bony ankylosis of posterior elements at L4-L5
x-ray of lumbosacral spine: bony ankylosis of posterior elements at l4-l5
x-ray of lumbosacral spine: bony ankylosis of posterior elements at L4-L5
x-ray of lumbosacral spine: bony ankylosis of posterior elements at l4-l5