Chapter 99 - Fractures of the Hip Flashcards

1
Q

what is the disadvantage of using a direct anterior approach to the hip for ORIF of a femoral neck?

A

you must also use a laterally based incision for all instrumentation/hardware

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2
Q

internervous plane for a watson-jones/anterolateral approach to the hip?

A

trick question both glute med and tfl are innervated by the superior gluteal nerve

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3
Q

mean femoral neck shaft angle?

A

130 +/- 7

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4
Q

mean femoral anteversion

A

10 +/- 7

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5
Q

trabecular bone patterns in the proximal femur are representative of what?

A

wolff’s law - bone remodels in response to stress

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6
Q

compression side, tension side and ward’s triangle - describe them

A

compression side - along calcar
tension side - along superior neck
wards triangle - weakest area of the femoral neck

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7
Q

what is the relationship between comorbidities and post-hip fracture one year mortality rate

A

4+ comorbidities = increased one year mortality rate compared to thos with three or fewer co-morbidities

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8
Q

how should a basicervical femoral neck be treated?

A

like an intertroch fracture - however they have less inherent rotational stability than an intertroch
- treat with a SHS and a detrotational screw

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9
Q

how to treat a femoral neck non-union

A

valgus intertroch osteotomy -> blade plate

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10
Q

instability in intertrochanteric fractures is based on what feature

A

posteromedial comminution -> tendency to fall into varus and retroversion

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11
Q

what are the surgical indications for greater trochanter fixation

A

> 1cm displacement in a young, active person

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12
Q

if you see an isolated lesser trochanter fracture, you should be thinking of what?

A
  1. ilipsoas avulsion if a kid
  2. pathologic fracture if an adult
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