I dislocated my left ring finger and three months later i. cant close my hand all the way..... what's wrong?

Dislocated finger: Sounds like ligament or tendon damage. Check with your orthopedic hand surgeon and hand therapy.

Ligament Contracture: You may be suffering from posttraumatic capsular contracture. This may be corrected with physical therapy or may require surgical release. Consult a hand surgeon for an evaluation.

Get help: See your doctor who will get your hand xrayed and may refer you to a hand specialist.Goodluck