What splint is used for mallet finger?

What splint is used for mallet finger?

• A. DIP extension splint
• B. PIP extension splint
• C. DIP hyperextension splint
• D. Dorsal blocking splint

Answer: (C)

The main idea is to immobilize the distal interphalangeal joint in extension so the torn or avulsed extensor mechanism at the DIP can heal without being disrupted by flexion. Holding the DIP in a fixed extended (hyperextended) position provides the most reliable protection against flexion at the fingertip, keeping the tendon ends approximated and allowing healing to proceed. This is why a DIP hyperextension splint is used for mallet finger: it ensures true extension at the DIP during the entire healing period, minimizing movement that could prevent proper tendon reattachment. Other options either target a different joint or do not guarantee the same rigid DIP extension, which is crucial for this injury.

The main idea is to immobilize the distal interphalangeal joint in extension so the torn or avulsed extensor mechanism at the DIP can heal without being disrupted by flexion. Holding the DIP in a fixed extended (hyperextended) position provides the most reliable protection against flexion at the fingertip, keeping the tendon ends approximated and allowing healing to proceed. This is why a DIP hyperextension splint is used for mallet finger: it ensures true extension at the DIP during the entire healing period, minimizing movement that could prevent proper tendon reattachment. Other options either target a different joint or do not guarantee the same rigid DIP extension, which is crucial for this injury.