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5 Cards in this Set
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Which of the following figures show an asterisk that correctly quantifies the amount of sagittal imbalance?
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Sagittal vertical axis offset, or sagittal imbalance, is determined by measuring the distance from the C7 plumb line (dropped from the center of the C7 vertebral body) to the posterior-superior corner of the S1 vertebral body.
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tx of thoracolumbar idiop scoli using an ant single rod tech w/interbody cages, which assoc wpseudoarthrosis?1-Thorc curve coronal correc > 40%: 2-Thoracolumbar/lum curve coronal correc > 50%; 3-Smaller adol (<50 kg); 4-Failure to maintain lum lordosis of > 45; 5-Thoracic hyperkyphosis (>40)
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Thoracic hyperkyphosis (>40 degrees ) is a risk factor for pseudoarthrosis in patients treated with this method.moking, weight >70 kg, and T5-T12 hyperkyphosis of > 40.Ans5
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correlation has been found between Pelvic Incidence (PI) and spondylolithesis. Based on the angles X,Y, & Z in Fig A, B, & C, which determines the Pelvic Incidence (PI) in pt? 1-Ang Z + Ang Y; 2-Ang X - Ang Y; 3-Ang X - Ang Z; 4-Ang Z; 5-Ang Y
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Pelvic Incidence (Ang X) = Pelvic Tilt (Ang Z) + Sacral Slope (Ang Y); (PI) correlates strongest w/ isthmic spondylolisthesis grd. PI is const childhd (~47 deg), const in adulthd (~57 deg). PI is not affected by changes in posture.Ans1
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28yo F c/o LBP p/fell off a horse 2 D ago. She has no neurologic deficits. lat xray & axial CT scan Fig A & B, What is 1st line of tx? 1-Obser, mobilization, & further tx based on sx, 2-Spinal casting & bed rest x 6 wks; 3-Thoracolumbosacral orthosis x 6-8 wks
4-ORIF; 5-L5 -S1 pos spinal fusn w/ instrum |
1st line tx=adults w/ spondylolysis or spondylolisthesis is observation, mobilization, and further tx based on sx. middle-aged pop does NOT predispose to more disabling LBP than controls w/out spondylolisthesis.however F had mild LBP > controls.Ans1
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lat xray 5 yo child w/ no hx of trauma is shown. The deformity reduces on ext xrays. What is the most likely dx.1-Traumatic spondylolisthesis axis
2. Pseudosubluxation C spine; 3-Atlantoaxial instability (AP); 4-Rotatory atlantoaxial instability 5-Klippel-Feil Synd |
This is a nl variation in children; it is a pseudosubluxation. This is supported by the fact that the spinolaminar point on C2 is within 1.5 mm of spinolaminar line,NOT hangmans fx.Ans2
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