John M. Abrahams, MD, codirector of spine surgery, The Orthopedic and Spine Institute, and chief of neurosurgery, Northern Westchester Hospital, both in Mount Kisco, New York, and neurosurgeon, Brain & Spine Surgeons of New York, New York City.
Imagine that it’s a beautiful day and you are out taking a bicycle ride. You are coasting along a quiet…
