What is the dorsal block splint most commonly used for?

• A. extensor tendon injuries
• B. carpal tunnel syndrome
• C. radial tunnel syndrome
• D. flexor tendon repair

Answer: (D)

Protecting a repaired flexor tendon during early motion is the main idea. After a flexor tendon repair, the repair is vulnerable to rupture with excessive or sudden movement, so the splint limits troublesome movement while allowing safe tendon glide. The dorsal block splint positions the metacarpophalangeal joints in flexion (about 60–70 degrees) and keeps the PIP and DIP joints extended, effectively “blocking” active flexion at the distal joints. This setup lets gentle, controlled motion at the MCP level and passive glide of the repaired tendon without stressing the repair at the PIP/DIP, reducing tension while preventing adhesions. Because of this protective role, it’s most commonly used after flexor tendon repair.