Prosthetics Exam Flashcards
Gait cycle
Heel strike on one side and the following heel strike on the same side
Venous return of the blood to the heart is assisted by the
Action of the skeletal muscles
During normal human locomotion, how many inches does the center of gravity shift from side to side
2 inches
The center of gravity of the adult male is located on the midline of the body at approximately the level of the
2nd sacral vertebra
To minimize lateral bending of the trunk subsequent to unilateral hip abductor weakness, it is best to use:
A cane on the uninvolved side
Surgical attachment of muscle to muscle is known as
Myoplasty
Body’s center of gravity reaches its highest point at
Mid-stance
Pressure is determined by
Force divided by area
During normal human locomotion, b/t heel contact and foot flat, the floor reaction force tends to cause which moments at the hip and knee
Hip flexion
Knee flexion
If the sciatic nerve is severed at the level of the lesser trochanter, muscle function will not be impaired at the
Hip joint
Which muscle is most readily identified by palpation
Sartorius
Muscles which pass posterior to the medial malleolus at the ankle act to
Invert and plantar flex the foot
Which of the following muscles flexes the knee joint
Biceps femoris
Bones which form the acetabulum
Ilium
Pubis
Ischium
Normal hip reaches its maximum extension during
Heel-off
Which of the following muscle inserts on the lesser trochanter
Iliopsoas
In the hip disarticulation Px, the major function of the iliac crest is to
Provide an area for suspension
In a Canadian hip disarticulation socket, which of the following is not affected by A-P placement of the hip joint
Lateral stability during stance phase
With respect to the hip and knee joints at midstance, the floor reaction line for a hip dis. Px may be caused by
Heel wedge that is too hard
The symphysis pubis is
The anterior junction of the pelvic bones
Immediate Post-surgical fitting of the UL amputees offers these advantages
Early maturation of the RL
More rapid rehabilitation
Early return of 2 handed grasping patterns
Advantages of a myoelectric Px system over a cable driven Px
Requires less force and excursion
Provides inherent sensory feedback
Improves the cosmetic result
Pt with loss of the thumb only would probably benefit most from
An opposition post
Mechanical partial hand Px would probably be contraindicated from a transmetacarpal amputation with
The thumb and index finger remaining