Elderly Professor in Sciatica Rehabilitation with Silver Hair

A close-up of an elderly American professor specializing in sciatica rehabilitation. His hands are placed naturally, sitting in front of a chair, with silver hair and sharp yet gentle eyes. He is wearing a turtleneck sweater and a casual blazer, appearing both scholarly and approachable. The background features a blurred medical bookshelf, highlighting his years of experience and authoritative status. Aspect ratio "9:16".