10 April 2026 Advancing Spine Surgery in the Pacific: First Uniportal Endoscopic Procedure at Naval Hospital Okinawa Camp Foster, Okinawa, Japan – Lt. Cmdr. Ki Chang, a Navy Medical Corps Officer and Staff Neurosurgeon at Naval Medical Center San Diego performed the first uniportal endoscopic spine surgery at U.S. Naval Hospital Okinawa (USNHO) this week.Lt. Cmdr. Ki Chang, a staff neurosurgeon at Naval Medical...