Chapter 102 - Tibial Plateau and Tibial-Fibular Shaft Fractures Flashcards

1
Q

what injuries are most commonly associated with tibial plateau fractures?

A
  1. meniscal injury - 50%
  2. cruciate or collateral ligament injury - 30%
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2
Q

plateau view xr

A

10 degree caudal tilt

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3
Q

what structural material has the best outcomes when treating tibial plateau fractures

A

calcium phosphate cement (lower incidence of articular subsidence compared with autograft)

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4
Q

knee stiffness in tibial plateau fractures is associated with?

A

high energy injury, use of an external fixator

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5
Q

what percentage of axial loads do the fibular bear?

A

15%

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6
Q

anterior leg compartment structures

A
  1. tibialis anterior
  2. EHL
  3. EDL
  4. Peroneus tertius
  5. anterior tibial artery
  6. deep peroneal nerve
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7
Q

lateral compartment of the leg structures

A
  1. peroneus longus
  2. peroneus brevis
  3. superficial peroneal nerve
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8
Q

superficial posterior compartment of the leg

A
  1. gastroc
  2. soleus
  3. plantaris
  4. sural nerve
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9
Q

deep posterior compartment of the leg

A
  1. tibialis posterior
  2. fhl
  3. flexor digitorum
  4. popliteus
  5. posterior tibial artery
  6. tibial nerve
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10
Q

indications for surgical management of tibial shaft fractures

A
  1. > 50% cortical displacement
  2. > 10degrees of angulation in either plane
  3. > 1cm shortening
  4. > 10deg malrotation
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11
Q

benefits of suprapatellar nailing

A
  1. less anterior knee pain
  2. improved sagittal plane alignment
  3. improved VAS scores
  4. improved fluoro times
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12
Q

non-reamed tibial nail is associated with what?

A

higher rate of locking screw breakage

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13
Q

most common proximal malalignment?

A

procurvatum and valgus

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14
Q

most common distal deformity (if fibular broken at same level)

A

valgus and procurvatum

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15
Q

most common deformity distally if fibula is intact?

A

varus

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16
Q

what adjustments to the start point should you make in a proximal 1/3 tibial fracture to avoid malalignment

A

slightly more lateral than usual to avoid valgus