UBE — unilateral biportal endoscopy — is an endoscopic spine surgery technique performed through two small portals: one for an endoscope that gives a magnified, continuously irrigated view on a screen, and one as an independent working channel for the instruments. It belongs to the minimally invasive family but represents a different visualization approach from tube-and-microscope surgery. In recent years it has become one of the most actively studied minimally invasive spine techniques.
For most degenerative spine conditions, surgery is considered when an adequate trial of conservative care has not relieved symptoms that meaningfully limit daily life, or when specific neurological signs are present. A small number of situations — such as progressive weakness or cauda equina syndrome — call for urgent or emergency surgery. Outside of those, the decision is usually an elective one, weighed together by the patient and the surgeon based on quality of life.
These approaches differ mainly in how the surgeon reaches and sees the spine. Open surgery uses a traditional incision and direct view. Conventional minimally invasive surgery works through small tubular channels under a microscope to spare muscle. UBE — unilateral biportal endoscopy — instead uses an endoscope through two small portals, a fundamentally different way of seeing that is among the most actively developing areas in spine surgery. A smaller incision is not automatically better; the right approach depends on the specific condition being treated.
Decompression surgery relieves pressure on the nerves by removing whatever is crowding them — a herniated disc fragment, thickened ligament, or overgrown bone. Its goal is to free the nerve, not to change how the spine moves. Fusion, by contrast, stabilizes a segment that is moving abnormally. The two address different problems: decompression treats nerve compression, fusion treats instability. They are sometimes done together, but many patients need only one.