Prosthetics Components

Question 1

Transradial: elbow units

Answer 1

• attaches to either triceps cuff or upper arm pad

- flexible or rigid hinge connects socket to proximal component

Question 2

Transradial and transhumeral: wrist units

Answer 2

• quick change unit
• wrist flexion unit
• ball and socket
• constant friction

Question 3

Transradial and transhumeral terminal devices

Answer 3

• voluntary opening or closing
• body-powered, externally powered, myoelectric, or hybrid
• hook, mechanical hand, cosmetic glove

Question 4

Transradial: suspension

Answer 4

• Triceps cuff
• harness
• cable system

Question 5

Transhumeral: suspension

Answer 5

• harness
• cable system
• suction

Question 6

Transhumeral: elbow unit

Answer 6

Internal or external locking elbow unit

Question 7

Surgical removal of the foot at the ankle joint with removal of the malleoli

Answer 7

Syme’s amputation

Question 8

Amputation through the talonavicular and calcaneocuboid joints. Preserves the plantarflexors, but sacrifices the dorsiflexors, often resulting in an equinus contracture

Answer 8

Transverse tarsal (chopart’s)

Question 9

Surgical removal of the metatarsals. Preserves the dorsiflexors and plantarflexors

Answer 9

Tarsometatarsal (Lisfranc)

Question 10

Transfemoral: sockets

Answer 10

• quadrilateral

- ischial containment

Question 11

Transfemoral: suspensions

Answer 11

• lanyard strap
• shuttle lock
• suction (seal in liner, skin fit)
• partial suction (Silesian bandage, pelvic belt/band)
• vacuum

Question 12

Transtibial: sockets

Answer 12

• PTB
• supracondylar patella tendon socket
• supracondylar-suprapatellar socket

Question 13

Transtibial: suspensions

Answer 13

• supracondylar cuff
• thigh corset
• supracondylar brim
• neoprene sleeve suspension
• waist belt with fork strap
• suction with knee sleeve
• shuttle lock
• vacuum

Question 14

Transfemoral: knee

Answer 14

• single axis
• polycentric
• hydraulic
• microprocessor

Question 15

Transfemoral and transtibial: shanks

Answer 15

• exoskeleton (rigid exterior)

- endoskeleton (pylon covered with foam)

Question 16

Transfemoral and transtibial: foot systems

Answer 16

• SACH
• stationary attachment flexible endoskeleton
• single axis
• multi-axial
• hydraulic
• powered
• dynamic response