A graduate of the University of California San Diego School of Medicine, he completed his orthopaedic residency at Harbor-UCLA Medical Center and his spine fellowship training at Rancho Los Amigos National Rehabilitation Center in Downey. He has been in practice in the South Bay for over 12 years. Dr. Yoshida is currently an assistant clinical professor of orthopaedic surgery at the UCLA School of Medicine and Chief of the Orthopaedic Spine Service at Harbor-UCLA Medical Center. Q: What causes neck pain?