Hi, many thanks for the query!
Yes, ligament compression causes nerve entrapment/compression, that leads to sensory deficit first, i.e. numbness
in the area supplied by the nerve.
NCS (nerve conduction study
) can be done to come to a definite diagnosis.
Nothing much to worry, it can revert back to normal completely if you give rest to it for few days.
Get physically checked up with your doctor once.
Wish you a good health.