Part 2 DCCJP Final Exam Flashcards
Richardson: “Arch and ring”
Chondrosarcoma
Richardson: “silent sinus”
Atelectasis of a sinus
Richardson: “Pain at night, relieved by aspirin”
Osteoid osteoma
Richardson: “Wormian bones”
Osteogenesis imperfecta
Richardson: “Brown tumor”
Something to do with either renal failure or kidney disease
Richardson: “Pseudosubluxation”
Swischuk line
Richardson: “Where CBCT falls short”
Poor contrast for soft tissue, cannot diagnose Chiari or any soft tissue condition
Distinguish suture and fractures on CBCT
Fractures: sharp edges, nonsclerotic borders, often CROSS sutures, increase in diameter as approaching a suture, may widen sutures
Sutures: join other sutures without crossing, do not widen other sutures, uniform in diameter, zigzag, sclerotic borders
Basilar Impressions…
Secondary basilar invagination acquired later in life. Rheumatoid Arthritis patients, Osteogenesis Imperfecta (due to frequent microfractures and sclerosis at skull base)
Primary hyperparathyroidism
Most common cause is parathyroid adenoma causing hypersecretion of parathyroid hormone; 3% have a brown tumor
Secondary hyperparathyroidism
Usually seen in end-stage renal failure; 1.5% have brown tumor. MORE COMMON than primary, so BROWN TUMORS ARE MORE ASSOCIATED WITH SECONDARY HYPERPARATHYROIDISM
Julie: Children develop adult movement by age…
Age 8-10
Julie: Fulcrum of the headpiece should be placed…
1/8” below the mastoid process
Julie: Motion is greatest in children at which segment?
C2/C3
Julie: “The curvatures of the vertebral column increase its resistance to axial compression forces. Loss of the optimum normal curvatures therefore…
Results in inability to dissipate normal vertical load and rotatory stress based on the above principles.”
DMX: Number of cervical ligaments that can be evaluated on DMX
22
DMX measures…
Ligamentous sub-failure
3Ps
Painful, progressive, permanent
Alar ligaments withstand up to…
200N
CCJ ligaments limiting flexion
Nuchal ligament
Tectorial membrane
Transverse Occipital Ligament
CCJ ligaments limiting extension
Tectorial membrane
Barkow’s ligament
Anterior atlanto-occcipital membrane
CCJ ligaments limiting rotation
Alar ligaments
Accessory atlantoaxial ligament
Transverse Occipital Ligament
CCJ ligaments limiting lateral bending
Alar ligaments
Lateral atlantoaxial ligament
Transverse Occipital Ligament
Coupled ________________ was opposite of axial rotation
Lateral bending