Regan-Morrey Classification (Coronoid Fracture)
Regan-Morrey classification of a coronoid process fracture of the ulna, types I/II/III, by the height of the fragment - the companion to the Mason radial-head classification (both are terrible-triad elbow components).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Regan-Morrey type
- Type II - 50% or less of the coronoid height
Result: Regan-Morrey type II: fracture involving 50% or less of the coronoid height.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Type I
- Avulsion fracture of the tip of the coronoid process.
- Type II
- Fracture involving 50% or less of the coronoid height.
- Type III
- Fracture involving more than 50% of the coronoid height.
What you enter
- Regan-Morrey type
How this is calculated
Regan W, Morrey B. Fractures of the coronoid process of the ulna. J Bone Joint Surg Am. 1989;71(9):1348-1354. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.