Knee Units

Question 1

What K ambulator is polycentric knee good for?

Answer 1

K2

Question 2

Which knee unit adapts to changing conditions and prevents falls?

Answer 2

Microprocessor-control knees

Question 3

What K ambulator is manual locking knee used in?

Answer 3

K1

Question 4

What patient population can stance control knees not be used in

Answer 4

Bilateral AKA because knees won’t bend with loading, which means you can’t bend both knees at the same time in a patient with AKA.

Question 5

Which knee unit is good for those with variable cadence

Answer 5

Pneumatic/hydraulic knee units

Question 6

Which knee unit is the most stable?

Answer 6

Manual locking knee

Question 7

What kind of gait phase control do hydraulic knees provide?

Answer 7

Swing or swing and stance phase control

Question 8

Which knee unit uses a braking mechanism that prevents further knee flexion when weight is applied

Answer 8

Stance control knee

Question 9

What is the disadvantage of manual locking knee?

Answer 9

You have to walk with the knee straight.

Question 10

What K ambulator is hydraulic/pneumatic knee for?

Answer 10

K3/4

Question 11

Stance control knee provides stable stance for up to how many degrees of flexion

Answer 11

20 degrees of knee flexion

Question 12

Which knee unit has a mobile center of rotation and more than 1 axis of rotation

Answer 12

Polycentric knee

Question 13

Single axis knees are used for what K ambulator?

Answer 13

K1

Question 14

What activities do stance control knees not allow you to do?

Answer 14

Activities that require knee motion under weight bearing, sucking as going downstairs

Question 15

Which knee unit has only a single walking speed

Answer 15

Single axis knee

Question 16

What do single axis knees rely on for stability?

Answer 16

Alignment and voluntary control

Question 17

Which knee unit has good cosmesis when patient is sitting

Answer 17

Polycentric knee because it folds under itself when patient is sitting