Ch. 6 UE Prosthetics Flashcards
What are causes of UE amputation?
- Congenital disorder
- Trauma
- Tumor
Is scar placement during surgery important for UE amputation?
No, unlike LE scar placement is not critical as there is little weight bearing pressure placed on the limb and few bony concerns
There is a possibility of what developing after surgery of UE amputation?
Neuromas (benign growth of nerve tissue)
What is the residual limb of an UE amputation placed in post surgery?
Rigid dressing to prevent edema
What are the various levels of UE amputation?
- Wrist disarticulation
- Forearm
- Elbow disarticulation
- Above elbow
With a forearm UE amputation, what should we keep in mind?
- As distal as possible
2. Lose pro/supination so there is no rotation in the socket
With an elbow disarticulation, what should we keep in mind?
Difficult prosthetic fitting
With an above elbow amputation, what should we keep in mind?
- As distal as possible
2. Leaving sufficient padding on anterior humerus is important
What length is the prosthesis made compared to the anatomic limb?
Slightly shorter
What are the important bony landmarks which much be considered when fitting the patient with a harness body-powered prosthesis?
- C7 - harness ring must sit below or it will place excessive pressure on cervical spine
- Clavicle - harness passes over the clavicle which may cause breakdown
- Acromion process - to measure length
- Scapula - need max mobility to assist with mechanics
T/F The below elbow harness system is both operational and secure suspension
True
What is the purpose of the anterior strap for a below elbow harness system?
Resists downward translation or slippage
Shoulder flexion with a below elbow harness system does what?
Tightens cable and opens terminal device
Shoulder extension with a below elbow harness system does what?
Lessen tension on cable and close the terminal device
Shoulder abduction with a below elbow harness system does what?
Help augment tension on cable to open the terminal device further
A hook is good for what?
Manual labor (very durable)
What do UE amputees put around hand to help control tension?
Rubber bands
T/F The above-elbow harness is naturally more involved than the below-elbow devide
True
In the A/E harness, the anterior strap helps resist what?
Helps resist rotation of the unit
In the A/E harness, the main suspension elements travel over what muscle?
Deltoids
What shoulder motion operates terminal device in A/E harness?
Shoulder flexion
How do you lock the elbow of an A/E harness?
Through depression of shoulder and humeral abduction and extension to operate terminal device
Elbow must be what to operate terminal device?
Locked
Newer arms are bionic in nature meaning what?
They are powered by the user through electronics
Some arms are controlled by ____ in the residual limb while the newest arms are controlled by _____
Muscles
Thought processes
Myoelectric arms are suspended through what saystems>?
- Pin and lock
- Suction
- Supracondylar
What is targeted muscle reinnervation?
- Nerves in residuum are transferred to target mm that no longer perform function
- Augments signal to muscle for easier and enhanced prosthetic control
- nerves grow into new target tissues and enhances control of myoelectric arm
Targeted muscle reinnervation should only be used for what two types of amputations?
- Shoulder disarticulation
2. Transhumeral
For osseointegration of the UE, how many surgeries will they have?
2 surgeries 6 months apart
T/F Small studies report improved function and QOL for patients with osseointegration of the UE.
TRUE
What are neural prosthesis interfaces?
- Use functioning neural transmission pathways for direct control of robotic limbs
- Can restore movement and touch
neural prosthesis interfaces combine with two types of control?
- Combing forward control with feedback control (something slipping from hand)
