Clival chordomas are particularly difficult to manage because these tumors usually involve not only the intra-extra dura of the clivus, but also the bone of paraclivus, sella, atlas, odontoid
process as well as the ICA, cavernous sinus, vertebral artery, basilar artery, and brainstem, etc .
ASS, articular surface for scapular process; LS, lateral stay; OTP, odontoid
process; SC, suprasynarcual cartilage; SNF, spinal nerve foramen.
Open Mouth View is for suspected C2 fracture and should show lateral masses of the first cervical vertebra and entire odontoid
25% involve the vertebra, body, hyoid, mandible and odontoid
Replacement Kit discharged stimulants such Libra XP, set to the bilateral deep brain stimulation, set to replace the discharged stimulants such Prime Advanced, set to replace the discharged stimulants such EONC set to stimulate analgesic spinal and brain function BURST system stability lobe cranial percutaneous przeznasadowa stabilization with the possibility of supplementing the screws to stabilize the direct odontoid
fracture, cervical interbody cage with additional system kotwiczacym.
The head position is estimated on the basis of the craniocervical angle, which is formed by the basic anterior cranial base (NS), and odontoid
process tangent (OPT) which passes through the lower end last point on the body of the second cervical vertebra .
The erosion of the ligamentous support for the odontoid
peg due to rheumatoid synovitis causes atlantoaxial instability leading to compression of the upper cervical cord and brainstem.
We believe that when there is a reduction of the posteroinferior angle formed by the McGregor and odontoid
planes for the anteroposterior cranio-cervical rotation variable, a compensatory cervical hyperlordosis associated with an increased distance from the hyoid bone to the mandibular symphysis would be generated.
Imaging showed multiple facial and rib fractures, a Type II odontoid
fracture and thoracolumbar spine injuries.
Of significance for this case, the odontoid
process was found to be 5 mm above Chamberlain's line.
process of the second cervical -- Posterior tangent to the odontoid
Radiographs were reviewed for the following features: loss of cervical lordosis, odontoid
process erosion, anterior atlantoaxial subluxation, C1-C2 arthritis, atlantoaxial impaction, inflammation of disc, apophyseal joint arthritis, anterior ankylosis, apophyseal joint ankylosis, anterior and posterior subaxial subluxation and growth disturbances.