Application‑based segmentation of the intraoperative navigation market categorises usage into neurosurgery, orthopedic surgery, ENT (ear‑nose‑throat), spinal surgery, and cardiac surgery. Neurosurgery accounts for the largest share, driven by demand for tumor resection, deep brain stimulation, and functional mapping, where navigation accuracy directly influences patient outcomes. Orthopedic surgery, encompassing joint replacement and trauma fixation, follows closely, leveraging navigation to improve implant alignment and reduce revision rates. ENT applications, primarily functional endoscopic sinus surgery, benefit from navigation’s ability to preserve critical structures. Spinal surgery utilizes both optical and electromagnetic systems to guide pedicle screw placement and deformity correction, contributing a significant incremental volume. Cardiac surgery remains a modest segment, focused on minimally invasive valve repairs and electrophysiology procedures. Collectively, these application categories shape the overall market size, with neurosurgery and orthopedics together representing the bulk of revenue, while emerging uses in ENT and spinal fields provide growth momentum.