Question category: Rheumatology
A 54 year old gentleman has been renovating his home. He now presents with a painful elbow that radiates down the back of his forearm. He states the pain is worse on movement and he has been building DIY furniture but now finds it difficult to use a screwdriver or even hold a cup of coffee, due to the pain. On examination pain is worsened on resisted wrist extension. What is the most likely diagnosis?