Upper Extremity Prosthetics Flashcards
What does disarticulation mean can happen
Have distal end weight bearing/contact
Short transhumeral length
30-50%
Standard transhumeral length
50-90%
Very short transradial length
Less than 35%
Short transradial length
35-50%
Long transradial length
Greater than 50%
True or False:
A long transradial amputation has supination/pronation which gives a better prognosis
True
What is a voluntary open hook or hand
The hook or hand is always closed and has to be opened voluntarily
What is a voluntary close hook or hand
The hook or hand is always open and has to closed voluntarily
What determines the pinch force of a hook
Number of rubberbans
True or False:
There are standard and heavy duty hooks
True
What is the shape of the hook
Lyre-canted shape
What does the lyre-canted shape allow for
Allows the patient to feed themself
True or False:
The hand is interchangeable with a hook
True
True or False:
The hand can be active or passive for cosmesis
True
What fingers typically move in a prosthetic hand
Thumb, pointer, and middle finger (digits I-III)
What type of grip does a prosthetic hand use
Three jaw chuck
True or False:
Prosthetic hands can have a cosmetic glove that can be put on them
True
True or False:
With a child we are trying to promote crawling and getting them upright
Trur
What is the hook good at grasping
Small objects
What is the hand good at grasping
Large objects
True or False:
Use of the hook in restricted areas is better with the hook when compared to the hand
True
True or False:
The weight, cost, and maintenance of the hook are less than the hand
True
With unilateral amputees what is the purpose of the prosthesis
To serve as a helper
True or False:
For a unilateral amputee the prosthesis is not required to perform intricate delicate tasks they just use the intact limb
True
True or False:
With a bilateral amputee all activities are performed with the prosthesis
True
True or False:
With a bilateral amputee two hands are rarely provided in the design
True
What does the wrist unit do
Attaches the terminal device to the prosthesis
True or False:
The patient will actively change the amount of pronation/supination with their intact limb or by pushing wrist against body to achieve the most functional position
True
What does TD stand for
Terminal device
True or False:
The wrist unit allows for interchange of terminal devices
True
What are the 3 types of wrist units
- Friction
- Locking/quick release
- Flexion
What is a friction wrist unit
Compressed rubber washer that allows pronation/supination, it is oval or round
True or False:
Most bilateral amputees wear bilateral friction wrist units
True
What is the locking/quick release wrist unit
Manual rotation then lock terminal device in fixed position
True or False:
locking/quick release wrist units have a button or three rings
True
True or False:
A shorter limb makes holding the distal end of the limb in flexed position harder
True
What is different about a Muenster style prosthesis
It encases the epicondyles for suspension
What do you lose with the Muenster style prosthesis
Elbow flexion
What type of harness system is used for a transradial amputation or wrist disarticulation (2)
- Figure 8
2. Figure 9
Where does the axillary loop go and its function
Contralateral arm to stabilize the prosthesis
Where does the ring or cross point go
Below 7th cervical vertebra and toward the non-amputated side
Where does the control attachment strap go
Lower scapula on amputated side to control cable
Where does the anterior support strap or inverted Y go
Ipsilateral deltopectoral groove
What do the harness systems offer (3)
- Efficient suspension
- Control of rotation
- Tolerate axial load bearing
What happens with a figure 9 harness
You lose elbow flexion
How do you use the terminal device in a transhumeral amputation
By depressing the shoulder to lock the elbow before using the terminal device
Almost the end of the semester you know what that means
8==D
YAY DICKS!!!!!
