Knee: Anatomy 1

Question 1

% of adult population that reports knee pain

Answer 1

10-15%

Question 2

Knee pain accounts for (%) of all PCP office visits

Answer 2

3-5%

Question 3

How many knee replacements performed per year?

Answer 3

> 600,000

Question 4

How many ACL-R done each year?

Answer 4

> 100,000

Question 5

The tibiofemoral jt is a modified hinge joint with (#) degrees of freedom

Answer 5

2

Question 6

The medial femoral condyle is (smaller/larger) and extends further (direction)

Answer 6

Larger

Distally

Question 7

The lateral femoral condyle is (more rounded/flatter) and projects (direction)

Answer 7

Flatter

Anteriorly

Question 8

tibiofemoral joint: closed packed position

Answer 8

Full extension

Tibial ER

Question 9

tibiofemoral joint: open packed position

Answer 9

25˚ flexion

Question 10

tibiofemoral joint: capsular pattern

Answer 10

Flexion more limited than extension

Question 11

Knee joint capsule encloses these structures

Answer 11

• medial/lateral tibiofemoral joints

- patellofemoral joint

Question 12

Knee joint capsule: anterior capsule is bordered by these structures

Answer 12

• quad tendon
• patella
• patellar tendon
• retinacular fibers

Question 13

Knee joint capsule: posterior capsule is (thick/thin) and extends where?

Answer 13

• Thin

- from above femoral condyles and intercondylar notch

Question 14

The menisci cover how much of the tibial plateau?

Answer 14

2/3

Question 15

Menisci shape

Answer 15

semicircular
wedge shaped (thicker on outer edge)

Question 16

The menisci disperse up to (%) of load on the knee

Answer 16

50-70%

Question 17

How do the menisci disperse up to 50-70% of load on the knee?

Answer 17

• inc’d contact surface

- shock absorption

Question 18

The MEDIAL meniscus is __ shaped and is (larger/smaller)

Answer 18

C shaped

larger

Question 19

The LATERAL meniscus is __ shaped and is (larger/smaller)

Answer 19

O shaped

smaller