ULNAR NERVE-C.ELBOW
From NeuroRehab.wiki
SUMMARY
1. Passes between the medial epicondyle and olecranon.
2. Here it lies under Osbourne's ligament where it can be compressed.
Image: Whitaker, R. and Borley, N. (2016). Instant anatomy. 6th ed. Chichester (West Sussex): Wiley Blackwell, p.126.
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.