Perhaps tennis elbow
Often pain on the inside of the elbow relates to "medial tennis elbow
" often termed golfer's elbow or racket ball elbow.
This is a degenerative tendon problem, occurring usually after age 35-40. If is made worse with gripping or lifting with the elbow in extension (straight). Therapy and stretches can help. Most resolve with time and protection. Steroid injections have been shown ineffective.