Nonsurgical treatment is tried using to start with, and could include things like observation, an elbow splint or sleeve to help keep the elbow extended (especially though sleeping), and/or Actual physical therapy using an occupational or hand therapist. Here is the next commonest nerve entrapment soon after carpal tunnel syndrome. https://www.theorthopaedicandpainpractice.com/the-latest-advances-in-elbow-nerve-pain-treatment/