Spine Flashcards

1
Q

Epidural abscess

-reasons for iv abx failure

A
IVDA
Dm
Age older than 65
CRP higher than 115
WBC greater than 12.5
Steph aureus
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2
Q

Approach for sx for lateral disc herniation

A

Far lateral approach

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3
Q

Advantage of interbody fusion over posterolateral fusion

A

Improved neuroforaminal height

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4
Q

Complication of osteopenia and fusion

A

Pedicle screw cutout

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5
Q

Complication of long instrument fusions, especially to sacrum and pelvis

A

Proximal junctional kyphosis

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6
Q

Complication if spine instrumented in hypolordotic position

A

Sagital imbalance

PT with forward lean and lack ability to extend spine to stand upright

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7
Q

Complication of noninstrumented fusions

A

Pseudoarthrosis

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8
Q

What measurement is always constant in spine?

A

Pelvic incidence

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9
Q

Sacral slope

A

Line parallel to S1 endplate
Second horizontal line
Angle between 2 lines

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10
Q

Pelvic tilt

A

Line center of s1 endplate to center of fem head

Second vertical line intersecting fem head

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11
Q

Pelvic incidence

A

Sacral slope plus pelvic tilt

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12
Q

Chance fracture

  • mech of injury
  • hallmark on ct
A

Flexion distraction injury
Axial split of pedicle on sagittal ct
Needs surgery to prevent deformity

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13
Q

Rick factor for pathological fracture

A

Hx of radiation

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14
Q

Advantage of minimally invasive over open transformaminal interbody fusion

A

Shorter hospital stay

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15
Q

Percentage of patients still with dysphasia 1 year after acdf

A

10%

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16
Q

What factors play a role in diskogenic back pain

A

TNF alpha, il-1, mmp

17
Q

What is most biomech fusion of as junction

A

C1-c2 transarticular screw

18
Q

Moa of pth in tx of osteoporosis

A

Stimulates osteoblastic bone formation and dec osteoblastic apoptosis

19
Q

Triggered Emg thresholds and pedicle screw placement
Greater than 15ma
9-10ma
Less than 4ma

A

Well placed pedicle screw
Breach of pedicle but screw not hitting neural structure
Screw contacting neural structure

20
Q

Scoliosis sx for PT
Younger than 50?
Older than 50?

A

Increasing coronal plane deformity

Pain and disability

21
Q

Tx for burst fx with no neuro defect and no PLL injury

A

No surgical