x-ray of cervical spine: bony ankylosis of apophyseal joints at C1-C2 level
x-ray of cervical spine: bony ankylosis of apophyseal joints at c1-c2 level
x-ray of cervical spine: bony ankylosis of apophyseal joints at C1-C2 level (procedure)
x-ray of cervical spine: bony ankylosis of apophyseal joints at c1-c2 level (procedure)