x-ray of cervical spine: bony ankylosis of posterior elements at C4-C5 level
x-ray of cervical spine: bony ankylosis of posterior elements at c4-c5 level
x-ray of cervical spine: bony ankylosis of posterior elements at C4-C5 level (procedure)
x-ray of cervical spine: bony ankylosis of posterior elements at c4-c5 level (procedure)