Most elbow pain never makes it to the operating room. Tendon irritation on either side of the joint, an ache after a heavy week, stiffness that loosens as the arm gets warm: those will all improve if you reduce the load, do some therapy, and wait. Surgery comes when there's a structural problem rehabilitation can't fix.
The most obvious are the mechanical symptoms. An elbow that locks, catches in one place, or cannot fully straighten because something physical is in the way, a loose piece of bone or cartilage or a spur, will not improve with exercise alone. Once locking becomes prolonged or hard to force open, you're past the point of waiting it out.
Instability is another common symptom. An elbow that buckles when you push yourself up from sitting down, or that opens up on the inner side at the end of throwing, has a ligament no longer holding its side, and stretched ligaments rarely tighten on their own.
The third category is the nerve-related ones. You might have experienced intermittent tingling in the ring and pinky fingers when your elbow was bent, but when the tingling is constant regardless of how you hold your arm, it means your nerve is being pinched in all positions. If you've noticed progressive weakness in your grip, like dropping things or having difficulty holding cups, it could mean you've already developed some muscle wasting, which doesn't always come back.
None of this makes conservative care pointless. A brace, adjusted activities, physical therapy, and the non-surgical options regenerative medicine lays out settle most elbows. What moves an elbow toward surgery is not how much it hurts but why. If yours shows any of the signs above, request an appointment rather than sitting through another month.