Practice Quiz

PTA Physical Therapy Assistant

Category - Equipment and Devices

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What is the use of a knuckle bender splint?
  1. Stabilizes wrist in dorsiflexion
  2. Maintains metacarpophalangeal joint at 90 degree of flexion and interphalangeal joints in extension
  3. Maintains the thumb in abduction and partial rotation
  4. Maintains the shoulder in abduction and external rotation
Explanation
Answer: B - Knuckle bender splint maintains metacarpophalangeal joint at 90 degree of flexion and interphalangeal joints in extension.

Knuckle bender splint is indicated for total or ulnar claw hand.

Cock-up splint stabilizes wrist in dorsiflexion which is used in wrist drop from radial nerve palsy.

C - Splint maintains the thumb in abduction and partial rotation. It is indicated in median nerve injury.

Airplane splint maintains the shoulder in abduction and external rotation which is indicated in Erb’s palsy.
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