1. What are two types of elbow joints? Which is preferred?
2. What sort of elbow locking system is used in elbow disarticulations?
*3. What harness designs are used most frequently for transhumeral prostheses?
Answers:
1. Internal and external locking elbow. Internal elbow is preferred because of greater durability and used in level of amputation 4 cm or more proximal to the level of the epicondyle. External elbow is used for longer limbs.
2. External locking.
3. Modifications of the figure-8 and chest-strap patterns used with transradial prostheses.
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