Which condition is commonly treated with a wrist cock-up splint?

Which condition is commonly treated with a wrist cock-up splint?

• A. radial nerve injury
• B. ulnar nerve palsy
• C. distal radius fracture
• D. De Quervain's tenosynovitis

Answer: (A)

A wrist cock-up splint positions the wrist in slight extension to support the hand when wrist extension is weak, such as after a radial nerve injury. By keeping the wrist extended, the long finger flexors can shorten passively and produce a functional grip through the tenodesis effect, improving grasp even though the extensor muscles are paralyzed. This makes it a common and practical choice for radial nerve palsy during recovery. The other conditions have more specific or different immobilization needs—for example, De Quervain’s tenosynovitis is typically treated with a thumb spica splint to immobilize the thumb, ulnar nerve palsy affects intrinsic hand muscles in a way not specifically addressed by a wrist extension splint, and distal radius fractures are usually managed with casts or a short-arm brace rather than a wrist cock-up as the primary treatment.

A wrist cock-up splint positions the wrist in slight extension to support the hand when wrist extension is weak, such as after a radial nerve injury. By keeping the wrist extended, the long finger flexors can shorten passively and produce a functional grip through the tenodesis effect, improving grasp even though the extensor muscles are paralyzed. This makes it a common and practical choice for radial nerve palsy during recovery. The other conditions have more specific or different immobilization needs—for example, De Quervain’s tenosynovitis is typically treated with a thumb spica splint to immobilize the thumb, ulnar nerve palsy affects intrinsic hand muscles in a way not specifically addressed by a wrist extension splint, and distal radius fractures are usually managed with casts or a short-arm brace rather than a wrist cock-up as the primary treatment.