Amputation and Prothesis

Question 1

what is a knee disarticulation?

Answer 1

femur is preserved by the tibia and fibula are removed

Question 2

True/False: the shorter the limb the greater the energy demand.

Answer 2

true

Question 3

where does COG shift with amputation?

Answer 3

to the intact limb and upwards

Question 4

what is a hip disarticulation?

Answer 4

removed the femoral head from the acetabulum
pelvic remains intact

Question 5

what is a hemipelvectomy?

Answer 5

half of the pelvic is removed

Question 6

what is a hemicorporectomy?

Answer 6

amputation of both LE and the pelvis below lumbar vertebrae L4 and L5

Question 7

what is a transradial amputation?

Answer 7

below the elbow

Question 8

what is a transhumeral amputation?

Answer 8

above the elbow

Question 9

what are the 2 types of nonarticulated feet?

Answer 9

Seattle foot: slightly flexible plastic keel bends at heel contact

microprocessor: microcomputer controls DF and PF, improves ability to ambulate on incline, stairs, and uneven surfaces. heavier and higher maintenance cost.

Question 10

what is a SACH foot?

Answer 10

contains energy absorbing cushion heel
permits PF in early stance
cannot be used on uneven terrain

Question 11

what is a SAFE foot?

Answer 11

can be used on uneven terrain
has greater mediolateral motion on rear foot
heavier and less durable

Question 12

which type of dressing allows earlier ambulation following an amputation?

Answer 12

rigid dressing

Question 13

what are considered the pressure sensitive areas?

Answer 13

anterior tibia
anterior tibial crest
fibular head and neck
fibular nerve

Question 14

what are considered the pressure tolerant areas?

Answer 14

patellar tendon
medial tibial plateau
tibial and fibular shafts
distal end

Question 15

what are the key factors for gait rehab post amputation?

Answer 15

hip abductor strengthening for stance stability
hip extensor strengthening for transfemoral amputation
knee extensor strengthening for transtibial amputation

balance training, symmetrical stance, and weight shifting are all important

Question 16

Low walls of a prosthesis are similar to __ muscles. High walls are similar to __ muscles.

Answer 16

low = weak
-anterior: weak quads
-posterior: weak glutes
-lateral: weak abd
-medial: weak add
high = tight
-anterior: tight hip flexor

Question 17

what deviations would you see with a prosthetic that is too long?

Answer 17

affected during swing phase; circumduction, pelvic hike

Question 18

what deviations would you see with a prosthetic that is too short?

Answer 18

lateral trunk lean towards the residual limb

Question 19

what deviations would you see with a prosthetic that has a bumper that is too hard?

Answer 19

bumper will not absorb GRF - excessive knee flexion

Question 20

what deviations would you see with a prosthetic that has a bumper that is too soft?

Answer 20

excessive compression of the heel cushion - knee hyperextension