Feilmeier- Dayton Biomechanics Flashcards
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
