Flashcards in UE Amputations Deck (63)
What is osseointegration?
Direct attachment to the bone; no socket required
Can be used with myoelectrics; Maximize existing ROM
What is a common problem with osseointegration?
Where can you receive osseointegration?
Europe (possibly US soon)
Who wore the first UE prosthesis?
Roman general, Marcus Sergius
No advancements until 1800s
What are 6 different UE prothesis we learned about?
How many UE amputees wear a prosthesis?
Less than 50%
What are benefits and limitations of no prosthesis? (4,4)
Functional range of motion
Active prehension (typically)
What is a Passive (Semi-Prehensile) Prosthesis?
A cosmetic restoration with limited functional capabilities.
Used for functional activities that do not require active prehension.
(Typically digits can be manipulated to enhance function).
What are benefits of a passive (Semi-Prehensile) Prosthesis? (6)
Can be cosmetic
Can be lightweight
Most are simple
Usually little maintenance
Can be inexpensive
What are limitations of a passive (Semi-Prehensile) Prosthesis? (4)
No active prehension
Patient can have unreal expectations for cosmesis
What are 3 different types of passive (semi-prehensile) prosthesis?
How does Cable-Operated Prosthesis work?
Powered and controlled by gross body movements captured by a harness system
What are the 2 basic requirements for cable-operation?
1. Excursion (utilize body motions for control)
2. Force (force associated with those body motions)
Benefits of cable-operated prosthesis? (4)
Reduced maintenance cost
Prehensor shape allows for improved visibility
Increased excursion velocity
Limitations of Cable-Operated Prosthesis?
Grip strength or pinch force
Functional range of motion
Restrictive and uncomfortable harness
Poor static and dynamic cosmesis
Axilla anchor (possible nerve entrapment syndrome)
Atrophy of intrinsic muscles within encapsulated limb
Poor correlation between the neuromuscular system utilized for prosthetic action and that utilized for normal human movement
What is an electrically powered prosthesis?
Powered by battery systems and are controlled by various input methods
What are the different control options for an electrically powered prosthesis? (7)
Myoelectric (single or dual side)
Touch Pads (FSR's)
What is the most common electric system?
How does myoelectric control work?
Surface EMG signals are developed by muscle contractions that are used by microporcessors to control elbows, wrists, and hands, or other terminal devices
What are benefits of an electrically powered prosthesis? (5)
Increased functional ROM
Provides functional cosmetic restoration
Increased grip strength
Harness system reduced or eliminated
What are 6 reasons people may choose to not use a UE prosthesis?
Bad first experience
Unaware of options
Limited functional ability
Not worth the “hassle”
No rehabilitation program
What prosthesis is used for activities that do not require active prehension?
Passive (Semi-prehensile) Prosthesis
What prosthesis would you use for increased excursion velocity and improved visibility? (assuming you don't care about poor cosmesis)
What type of battery is separated for more options?
Split cell batteries are a nice option if space is limited within the prosthesis. As shown in the transcarpal fitting, the split cell batteries were placed inside the 4th and 5th digit of the hand shell, therefore reducing the bulk inside the prosthesis.
What are 9 different terminal devices we learned about in class?
Motion Control hand
What terminal limb uses coding plugs to change the control mode?
Increased speed- 300mm/sec
Auto grasp feature
Which prosthetic hand offers an auto grasp feature?
Otto Bock Sensorhand Speed-
What terminal limb is:
Available as DMC or Digital twin
1/3 the weight and length of adult hands?
Direct lamination to socket or QD option
Good lightweight option with endoskeletal adapter
T or F: The transcarpal hand is not available with a quick disconnect feature
False (it does have a quick disconnect feature)