The nurse wishes to test opposition ability in the patient's thumb. How would the nurse instruct the patient?
1. "Touch each one of your fingertips with your thumb.".
2. "Move your thumb across your palm away from the rest of your fingers.".
3. "Move your thumb across your palm and touch your fifth finger.".
4. "Move your thumb anteriorly away from the palm and then back.".
1
Rationale 1: Opposition is assessed by asking the patient to touch each of the fingertips with the thumb.
Rationale 2: Extension is assessed by asking the patient to move the thumb across the palm away from the rest of the fingers.
Rationale 3: Flexion is assessed by asking the patient to move the thumb across the palm and touch the fifth finger.
Rationale 4: Moving the thumb anteriorly away from the palm and then back tests adduction and abduction.
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