Feilmeier- Dayton Biomechanics Flashcards Preview

Biomechanics > Feilmeier- Dayton Biomechanics > Flashcards

Flashcards in Feilmeier- Dayton Biomechanics Deck (10)
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1
Q

How does the STJ compensate for tibial varum?

A

STJ pronates

-heel everts, foot dorsiflexes and abducts

2
Q

When does maximal ankle dorsiflexion occur?

A

mid-stance just before heel lift (10 degrees is functional)

3
Q

how do you compensate for equinus?

A
  • forward torso lean
  • pelvic rotation
  • hip flexion
  • knee hyperextension
  • external rotation of leg
  • pronation !!!
4
Q

what is required for dorsiflexion?

A

pronation of foot

5
Q

what is the normal degree for tibial angulation?

A

10 degrees varus

6
Q

describe the developmental progression of tibial angulation.

A
0-2 y/o varus
2-5 yrs neutral
5-12 yrs valgus
12-adults slight varus
(usuallly about 10 degrees varus)
7
Q

what is equinus?

A

limitation of normal ankle dorsiflexion

8
Q

what is the most common limiting factor in equinus?

A

gastroc-soleus equinus

9
Q

When measuring for equinus, incorrect pronation of the foot increases measured dorsiflexion by how much?

A

10 degrees

10
Q

how much dorsiflexion is minimum?

A

10 degrees