Pediatric Test Flashcards
What is the Hueter-Volkman Principle?
Growth plates produce increased growth in response to tension & decreased growth in response to excessive compression.
What is Flexure Drift?
Bone remodeling where bone from the convex side of the bone moves to the surface of the concave side to straighten.
Happens in asymmetrical growth*
What is a normal angle of inclination?
120-135 degrees
What is Coxa vara?
Less than 120 degrees angle of inclination
What is Coxa valga?
Greater than 135 degrees angle of inclination
What is femoral torsion?
The angle formed by an axis drawn through the head and neck of the femur and an axis through the condyles.
What is Antetorsion?
Head and neck of the femur rotated forward
*Normal at birth. Can cause in-toeing
What is Retrotorsion?
Head and neck of the femur rotated backward
What is Femoral Version?
The position of the head of the femur in the acetabulum relative to the posterior pelvis (frontal plane)
What is Anteversion?
Positions the head of the femur anteriorly in the acetabulum resulting in external rotation of the thigh.
What is Retroversion?
Positions head of the femur posteriorly resulting in internal rotation of the thigh.
Feet flat is normal until what age?
4-5 years old
Gait matures during what age range?
1-7 years
What are indicators of mature gait and what age do you typically see them?
- ) Single-leg stance: adult value by age 3 ½ -4 yrs
- )Velocity: greatest increase from age 1 to 3 yrs
- ) Cadence: highest in new walkers with most rapid decrease from age 1-2 yrs.
- )Step length: increases throughout childhood. Greatest increase 1 to 4 years.
- )Pelvic span to ankle spread ratio: increase over time – narrowing BOS
What is Ehlers-Danlos Syndrome?
An abnormal collagen Type V