A 45-year-old woman fell onto her outstretched hand while jogging. She now has pain and swelling in her wrist and difficulty moving it. What is the likely diagnosis and what should be the next step?
The patient's history and symptoms are suggestive of a distal radius fracture, often referred to as a Colles' fracture. This is a common injury following a fall onto an outstretched hand. The next step should be to immobilize the wrist and obtain radiographs (X-rays) to confirm the diagnosis and assess the severity of the fracture.