Ulnar nerve irritation at the elbow can follow trauma, causing numbness in ring and little fingers, weakness

https://landenwdye631.tearosediner.net/accident-injury-specialist-tips-what-to-do-in-the-first-72-hours

Ulnar nerve irritation at the elbow can follow trauma, causing numbness in ring and little fingers, weakness, and discomfort when bending the arm.