Patient History
39-year-old male right hand strain of the long finger MCP joint.
Findings
LIGAMENTS: Complete disruption of the middle finger metacarpophalangeal ulnar and radial-sided sagittal bands with diffuse dorsal edema. The radial band is more severely affected.
OSSEOUS: No fractures or dislocations.
TENDONS: Ulnar subluxation of the central extensor digitorum tendon at the middle finger MCP joint. The extensor attachment as the central tendon proximally and the distal or terminal attachment are both intact.
GENERAL: Diffuse soft tissue swelling throughout the dorsal aspect of the hand involving the 3rd and 4th digits.
Mild palmar capsulitis of the 3rd digit MCP joint.
Impressions
1. Complete tear of the ulnar and especially radial sagittal band “boxer’s knuckle” of the right middle finger MCP joint with ulnar subluxation of the extensor digitorum tendon.
2. Palmar capsulitis at the 3rd digit MCP joint.
