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MES > Prosthesis > Flashcards

Prosthesis Flashcards

1
Q

artificial substitute designed to replace a missing limb or body part

A

Prosthesis

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2
Q

Goals of Prosthesis

A

Stability
Energy efficiency
Ease of movement
Appearance of normal gait

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3
Q

UE Prosthesis

A

Body powered or Conventional
External powered or Electric
Passive or Cosmetic

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4
Q

patient uses his/her own residual limb, strength, ROM

A

Body powered or Conventional

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5
Q

Components of Body Powered or Conventional

A

Suspension
Socket
Terminal Device
Interposing joints
Control Cable System

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6
Q

interface between residual limb & prosthesis

A

Socket

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7
Q

Types of Socket (UE Prosthesis)

A

Dual walled
3-walled
Muenster

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8
Q

fabricated from the custom mold of residual limb (primary interface)

A

Inner Socket

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9
Q

fabricated to have a normal appearance/contour of the missing body part

A

Outer Socket

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10
Q

socket commonly seen in pediatric patients

A

3-Walled

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11
Q

socket commonly seen in very short below elbow amputation

A

Muenster

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12
Q

holds the residual limb to the prosthesis (socket)

A

Suspension

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13
Q

Types of Suspension (UE Prosthesis)

A

Harness-based
Self-suspending sockets
Suction

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14
Q

MC Suspension (UE)

A

Figure of 8 Strap

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15
Q

Figure of 8 Strap (intact & prosthetic side)

A

Intact side: harness loops around the axilla
Prosthetic side: anterior strap

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16
Q

indirectly attached to the socket using Y-strap and triceps pad

A

Transradial

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17
Q

anterior strap directly attached to the socket

A

Transhumeral

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18
Q

Purpose of shoulder saddle strap with chest strap

A

Heavy lifting

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19
Q

bony configuration allows suspension
(+) socks

A

Self-suspending socket

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20
Q

Criteria in using Suction-suspension socket

A

Good tissue envelope
(-) Scarring

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21
Q

water based/lubricant
creates suction within socket

A

One Air-Valve Suction

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22
Q

the sleeve rolled onto the residual limb and inserted into the socket to mate the mechanical lock

A

Silicon Gel Sleeve with Distal Pin Attachment

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23
Q

links the movement of shoulder and humerus to activate the terminal device

A

Control Cable Mechanism

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24
Q

Motions affecting Control Cable Mechanism

A

Scapular abduction
Shoulder abduction
Shoulder depression
Elbow flexion

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25
Q

Types of Control Cable Mechanism

A

Single control or Bowden cables
Dual-Control cable system

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26
Q

replacement for the hand

A

Terminal Device

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27
Q

Types of Terminal Device

A

Hooks
Functional/Active hands
Cosmetic/Passive hands
Specialized terminal device

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28
Q

Mechanism of Hooks

A

Lateral prehension
3 point chuck action

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29
Q

MC used Terminal Device

A

Functional/Active Terminal Device

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30
Q

MC Active Terminal Device

A

Voluntary opening

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31
Q

Mechanism of Voluntary opening

A

Opening: Cable system
Closing: Spring/Plugs

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32
Q

Prehensile strength of Voluntary opening

A

5-10lbs

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33
Q

Prehensile strength of Voluntary closing

A

20-25 lbs

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34
Q

Terminal device passively positioned by the patient; less function

A

Passive/Cosmetic Hand

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35
Q

Elbow unit mechanism

A

5-130 deg elbow flexion
(-) Full elbow extension

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36
Q

connects the terminal device to prosthesis

A

Wrist Unit

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37
Q

Types of Wrist Unit

A

Friction control wrist unit
Lock wrist unit
Wrist flexion unit

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38
Q

for quick changing of terminal device

A

Quick Disconnect Option

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39
Q

uses small electric motors incorporated to the prosthesis

A

Externally powered

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40
Q

Control System (Externally powered)

A

Myoelectrical
Switches

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41
Q

Types of Myoelectrical

A

Dual-electrode
Single site control

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42
Q

provides passive positioning; lightweight
should match the skin color/texture of intact side

A

Cosmetic Prosthesis

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43
Q

Post op Care for Transradial Amputation

A

Rigid Removable Dressing

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44
Q

Initial fitting for UE Prosthesis

A

3-6 months post-op

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45
Q

until definite prosthesis is prescribed

A

every 2-6 months

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45
Q

initial routine follow up with a new amputation

A

within 4-6 weeks after receiving prosthesis

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46
Q

life period of UE Prosthesis

A

3-5 years

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47
Q

Goals of LE Prosthesis

A

COsmesis
MObility
Durability
Stability

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48
Q

Components of Transtibial Prosthesis

A

FOot ankle assembly
Socket
Suspension element
SHank

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49
Q

substitute for the anatomic foot

A

Foot Ankle Assembly

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50
Q

directly attached to the shank
(-) joint motion

A

Non-Articulated

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51
Q

weight supporting structure (FAA)

A

Keel

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52
Q

MC prescribed Foot Ankle Assembly

A

SACH

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53
Q

Parts of SACH

A

Keel - firm
Heel - soft
Belting - distal end of keel to end of toes

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54
Q

if heel is too soft

A

excessive PF; knee flexion

55
Q

if heel is to firm

A

excessive DF; knee extension

56
Q

purpose of belting

A

prevents toe dropping during swing phase

57
Q

SACH is common in

A

K1-K2 walkers

58
Q

Parts of SAFE

A

Rigid block
Keel (flexible)
Long plantar ligament band

59
Q

Energy storing FAA

A

STEN
Seattle
Carbon Copy II
Quantum
Flex walk
Flex foot

60
Q

Parts of STEN

A

3 wooden keel
2 rubber plugs

61
Q

transfer of WB over the foot compresses the plugs then permits recoil

A

STEN

62
Q

earliest energy-storing foot to be commercially available

A

Seattle

63
Q

Shape of Keel in Seattle Foot

A

C-shaped

64
Q

transfer of WB over the foot bends the keel

stored energy returned during late stance -> forward propulsion

A

Seattle

65
Q

lighter, most expensive, stronger FAA

A

Carbon Copy II

66
Q

fxn of upper plate (keel)

A

high impact activities (jumping & running)

67
Q

fxn of lower plate (keel)

A

last half of stance phase

68
Q

Flex walk keel

A

from MTP joint to heel section

69
Q

Flex foot keel

A

from MTP joint to bottom of socket

70
Q

Energy-storing foot (HEAVY)

A

SAFE
STEN
Seattle

71
Q

Energy-storing foot (LIGHT)

A

Quantum
Carbon Copy II

72
Q

Energy-storing foot (MEDIOLAT STABILITY)

A

SAFE
SACH
Quantum
Carbon Copy II

73
Q

K0

A

non ambulatory

74
Q

K1

A

household ambulator

75
Q

K2

A

limited community ambulator

76
Q

K3

A

community ambulator

77
Q

K4

A

high impact activities

78
Q

Articulated foot types

A

Single axis
Multiple axis

79
Q

PF Bumper

A

15 def PF only

80
Q

DF Stop

A

only 5 deg DF

81
Q

replacement for the amputated leg

maintains the connection b/w socket & foot

A

Shank

82
Q

Exoskeletal

A

Crustacean Leg

83
Q

Endoskeletal

A

Central Support/Pylon

84
Q

Types of Socket

A

PTB
Hard Socket
ISNY PTB Socket

85
Q

composed of thin, flexible thermoplastic PTB socket

A

ISNY PTB Socket

86
Q

ISNY PTB Socket covers the

A

Patellar tendon
Medial flare
Popliteal area

87
Q

Types of Suspension System

A

Cuff suspension
Supracondylar System
Suprapatellar System
Thigh Corset

88
Q

attached to the medial & lateral wall
prevents Genu Recurvatum

A

Cuff Suspension

89
Q

mediolateral wall is higher than PTB socket

A

Supracondylar system

90
Q

high anterior wall covers the entire patella

A

Suprapatellar System

91
Q

oldest form of suspension

A

Thigh Corset

92
Q

exerts upward pull to assist in suspension

A

Elastic Belt

93
Q

Pressure Tolerant areas

A

Patellar Tendon
Pretibial muscle
Posterodistal residual limb
Popliteal fossa
Distal end, medial flare lateral tibia
Tibia & fibular shaft

94
Q

Pressure Sensitive areas

A

Anterior crest of tibia
Anterior tibia
Hamstrings tendon
Fibular head & neck
Peroneal, Fibular nerve

95
Q

Components of Transfemoral Prosthesis

A

FAA
Knee assembly
Socket
Suspension
Shank

96
Q

Types of Knee axis

A

Single axis
Polycentric

97
Q

Types of Friction

A

Constant Friction
Variable Friction
Fluid Control

98
Q

control the movement of shank

A

Friction

99
Q

if there is no friction

A

inc knee flexion during early swing phase
abrupt stop with noisy impact during extension

100
Q

MC type of Friction

A

Constant Friction

101
Q

same amount of resistance during swing phase
(+) screw

A

Constant Friction

102
Q

Initial & Terminal Swing friction

A

increase friction

103
Q

Midswing friction

A

decrease friction

104
Q

cadence dependent; simulates normal gait pattern

A

Fluid Control

105
Q

controls the heel rise, accelerates shank, replaces the function of quads

A

Extension Aid

106
Q

extension lever upper end

A

knee block

107
Q

extension level lower end

A

extension bias spring

108
Q

(+) harness/strap attached to anterior socket

A

“Kick strap”

109
Q

Types of Braking & Locking Mechanism

A

Weight activated friction brake
Manual lock

110
Q

Types of LE Socket

A

Quadrilateral
Ischial Containment

111
Q

Quadrilateral WB

A

Ischial tuberosity

112
Q

Ischial Containment WB

A

Ischiopubic Ramus

113
Q

Mechanism of Weight Activated Friction Brake

A

WB on prosthesis during 20-25 knee flexion -> Automatic locking mechanism

114
Q

Mechanism of Manual lock

A

Locking during knee extension during sit to stand

115
Q

Types of LE Suspension

A

Suction
Partial suction with Auxillary suspension
Silesian bandage
Pelvic belt

116
Q

suspension recommended for younger & active patients

A

Suction

117
Q

use suction with socks
there is no intimate fit between socket and residual limb

A

Partial Suction

118
Q

webbing band around the torso

A

Silesian Bandage

119
Q

leather strap with rigid metal band

A

Pelvic Belt

120
Q

Energy Expenditure: Wheelchair

A

9%

121
Q

Energy Expenditure: Crutches

A

60%

122
Q

Energy Expenditure: Single BK

A

10-40%

123
Q

Energy Expenditure: Double BK

A

41%

124
Q

Energy Expenditure: Single AK

A

65%

125
Q

Energy Expenditure: Double AK

A

100%

126
Q

Energy Expenditure: Single BK + Single AK

A

75%

127
Q

UE Prosthesis Length

A

3-5 inches

128
Q

UE Prosthesis Stump/Flap

A

Fishmouth

129
Q

UE Prosthesis Shape

A

Any

130
Q

BK Prosthesis Length

A

5-7 inches

131
Q

BK Prosthesis Stump/Flap

A

Burgess

132
Q

BK Prosthesis Shape

A

Cylindrical

133
Q

AK Prosthesis Length

A

> 10 inches

134
Q

AK Prosthesis Stump/Flap

A

Fishmouth

135
Q

AK Prosthesis Shape

A

Conical

MES (7 decks)

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