x-ray of thoracolumbar spine: bony ankylosis of posterior elements at T12-L1
x-ray of thoracolumbar spine: bony ankylosis of posterior elements at t12-l1
x-ray of thoracolumbar spine: bony ankylosis of posterior elements at T12-L1
x-ray of thoracolumbar spine: bony ankylosis of posterior elements at t12-l1