ABC Prosthetic exam 2023 /126
questions and answers complete
The gluteus medium is most active during what phase of stance? - -Midstance
-Which of the following is a major cause of the toe externally rotating at heel strike for
an AK? A)knee bolt externally rotated. B)excessive toe out. C)keel too short. D) plantar
flexion resistance is too firm? - -D) plantarflexion resistance is too firm
-All of the following factors contribute to vaulting with an AK except? A) weak hip
extensors. B)prosthesis too long. C) excessive knee friction. D)inadequate suspension? -
-A) weak hip extensors
-The gait cycle consists of? - -Heel strike on one side to the following heel strike on the
same side.
-Venous return of the blood to the heart is assisted by? - -The action of skeletal muscles
-How many inches does the center of gravity shift from side to side during normal
locomotion? - -2 inches
-Your center of gravity is located where? - -Just anterior of the second sacral vertebrae.
-The surgical attachment of muscle to muscle - -Myoplasty
-The surgical attachment of muscle to bone - -Myodesis
-The body's center of gravity reaches its highest point at? - -midstance
-Pressure is determined by (equation) - -Force divided by area
-During normal human locomotion, between heel contact and foot flat, GRF causes
which moment at the knee and hip? - -Knee flexion and hip flexion
-If the sciatic nerve is severed at the level of the lesser trochanter, muscle function will
not be impaired at which lower extremity joint? - -The hip joint
-In a shoulder disartic, what muscles would be most suitable sites for control of a
myoelectric elbow? - -Pectoralis major and the trapezius
-In a scapulothoracic amputee, what motion can be used to operate the prosthesis? - -
Chest expansion
, -The infraspinatus performs what action? - -external rotation of the arm, stabilize the
shoulder
-The terminal device on a shoulder disartic is operated primarily by scapular...? - -
Scapular abduction
-Shoulder district tend to have more difficulty with force or excursion? - -Excursion
needed to operate the prosthesis.
-The most prominent and superior point of the shoulder girdle is the? - -Acromion
-Benefits of a shoulder saddle harness? - -Increase comfort in axial loading, reduce
pressure on the axilla (however does not improve excursion with biscapular abduction)
-What UE amputation level are external or outside locking joints designed for? - -
Elbow disarticulation or distal humerus (when a standard elbow unit would otherwise
excessively elongate the humeral section)
-Standard length of a prosthetic elbow unit - -2"
-Definition of amelia - -complete absence of a limb
-Where should the cross point of a Figure 8 harness be located? - -Inferior of C7 and
towards the sound side.
-What epiphysis contributes most to the longitudinal growth of the UE? - -the distal
humerus
-Action: Elevation of the scapula - -Muscle: Trapezius
-What action at the shoulder will be impaired if the middle deltoid is not functional? - -
Abduction
-What amputation level would flexible elbow hinges be most appropriate? - -Long
transradial and lower (some pronation and supination)
-Extended proximal trimlines serve what purpose in and short TH prosthesis? - -
increase rotational stability
-The muscles the pass posterior to the medial malleoli act to: - -Invert and plantarflex
the foot. Include: posterior tibias, flexor digitorum longs, flexor hallucis longus.
-Primary flexors of the knee include: - -The hamstrings: biceps femoris (insert lateral),
semitendinosus, semimembranosus (insert most medial).
questions and answers complete
The gluteus medium is most active during what phase of stance? - -Midstance
-Which of the following is a major cause of the toe externally rotating at heel strike for
an AK? A)knee bolt externally rotated. B)excessive toe out. C)keel too short. D) plantar
flexion resistance is too firm? - -D) plantarflexion resistance is too firm
-All of the following factors contribute to vaulting with an AK except? A) weak hip
extensors. B)prosthesis too long. C) excessive knee friction. D)inadequate suspension? -
-A) weak hip extensors
-The gait cycle consists of? - -Heel strike on one side to the following heel strike on the
same side.
-Venous return of the blood to the heart is assisted by? - -The action of skeletal muscles
-How many inches does the center of gravity shift from side to side during normal
locomotion? - -2 inches
-Your center of gravity is located where? - -Just anterior of the second sacral vertebrae.
-The surgical attachment of muscle to muscle - -Myoplasty
-The surgical attachment of muscle to bone - -Myodesis
-The body's center of gravity reaches its highest point at? - -midstance
-Pressure is determined by (equation) - -Force divided by area
-During normal human locomotion, between heel contact and foot flat, GRF causes
which moment at the knee and hip? - -Knee flexion and hip flexion
-If the sciatic nerve is severed at the level of the lesser trochanter, muscle function will
not be impaired at which lower extremity joint? - -The hip joint
-In a shoulder disartic, what muscles would be most suitable sites for control of a
myoelectric elbow? - -Pectoralis major and the trapezius
-In a scapulothoracic amputee, what motion can be used to operate the prosthesis? - -
Chest expansion
, -The infraspinatus performs what action? - -external rotation of the arm, stabilize the
shoulder
-The terminal device on a shoulder disartic is operated primarily by scapular...? - -
Scapular abduction
-Shoulder district tend to have more difficulty with force or excursion? - -Excursion
needed to operate the prosthesis.
-The most prominent and superior point of the shoulder girdle is the? - -Acromion
-Benefits of a shoulder saddle harness? - -Increase comfort in axial loading, reduce
pressure on the axilla (however does not improve excursion with biscapular abduction)
-What UE amputation level are external or outside locking joints designed for? - -
Elbow disarticulation or distal humerus (when a standard elbow unit would otherwise
excessively elongate the humeral section)
-Standard length of a prosthetic elbow unit - -2"
-Definition of amelia - -complete absence of a limb
-Where should the cross point of a Figure 8 harness be located? - -Inferior of C7 and
towards the sound side.
-What epiphysis contributes most to the longitudinal growth of the UE? - -the distal
humerus
-Action: Elevation of the scapula - -Muscle: Trapezius
-What action at the shoulder will be impaired if the middle deltoid is not functional? - -
Abduction
-What amputation level would flexible elbow hinges be most appropriate? - -Long
transradial and lower (some pronation and supination)
-Extended proximal trimlines serve what purpose in and short TH prosthesis? - -
increase rotational stability
-The muscles the pass posterior to the medial malleoli act to: - -Invert and plantarflex
the foot. Include: posterior tibias, flexor digitorum longs, flexor hallucis longus.
-Primary flexors of the knee include: - -The hamstrings: biceps femoris (insert lateral),
semitendinosus, semimembranosus (insert most medial).
