Patella

Question 1

How many facets has the posterior aspect of the patella

Answer 1

seven facets

Question 2

medial facet is ____ and slightly _____

Answer 2

• smaller

- convex

Question 3

the lateral facet, which consists of approximately ___ of the patella, has both a _____ and a ______

Answer 3

• 2/3
• sagittal convexity
• coronal concavity

Question 4

How many variants of the patella have been described

Answer 4

6 (Wiberg and Baumgartl’s Patella Types)

Question 5

Patella has the thickest hyaline cartilage in the body, which may measure up to ____ in thickness

Answer 5

• 6.5 mm

Question 6

which part of the patella engages the trochlea at 10 to 20° of flexion

Answer 6

• distal pole

Question 7

most extensive contact (patella / femur) is made at approximately _____

Answer 7

• 45° (area is an ellipse in continuity across the central portion of the medial and lateral facets)

Question 8

The main biomechanical function of the patella is to ________________

Answer 8

increase the moment arm of the quadriceps mechanism