Clinical Study Indicates dualPortal® Spinal Endoscopy as Successful Surgical Technique Demonstrating Favorable Patient Outcomes and Low Complication Profile

Recent clinical study indicates positive data on Amplify Surgical’s dualPortal® Endoscopic Approach.

Amplify Surgical, Inc., a medical device company focused on innovative minimally-invasive surgery for the lumbar spine, announced positive data from the first comprehensive systematic review and meta-analysis on its dualPortal® Spinal Endoscopy, also known clinically as ‘biportal spinal endoscopy’. The study, “Clinical Outcomes and Complications after Biportal Endoscopic Spine Surgery: A Comprehensive Systematic Review and Meta-Analysis of 3673 Cases,” was recently published in the European Spine Journal, led by principal investigator, Don Y. Park, M.D., Vice Chair of Quality and Safety of the Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA in Los Angeles, California. Link: and


Results from the study demonstrated that dualPortal® is a safe and successful surgical technique, with favorable clinical outcomes and a low complication profile. The study analyzed 3,673 cases that utilized the dualPortal® endoscopic approach, across three procedure types: 2,402 decompressions, 1,056 discectomies, and 261 transforaminal lumbar interbody fusions (TLIF). Patients reported an average of 80% overall satisfaction. Moreover, researchers found that post-operative VAS-back, VAS-leg and ODI scores all significantly improved, from their review of 42 papers, in accordance with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Complication rates were comparable and even lower than those of open and microscopic techniques previously published, with durotomies, inadequate decompressions, and epidural hematomas occurring < 4% of the time. 


Dr. Don Y. Park notes, “My impetus of performing this study was to determine the overall outcomes and complication profiles for dualPortal® endoscopic spine surgery, as a whole, by compiling all the relevant studies throughout the scientific literature. I wanted to have definitive answers on what the results of the technique were, so that I can let my patients know how successful and safe the technique can be when performed appropriately. Now I can confidently tell my patients and colleagues what I have been seeing in my own practice: that dualPortal® endoscopic spine surgery has excellent outcomes with low rates of complications.”


Drawing comparisons to trends in arthroscopic utilization in knee and shoulder pathology, the investigators anticipate greater demand for dualPortal® spine surgery from both physicians and patients in the future. The researchers also noted the advantages of dualPortal®’s direct visualization, hemostasis via hydrostatic pressure, and ultra-minimally invasive approach to surgeons.


This latest clinical study adds to a growing body of promising new research on Amplify Surgical’s technologies. A recent study on Amplify Surgical’s dualLIF® System (the synthesis of dualPortal® Spinal Endoscopy and dualX® Dual-Expanding Interbody Technology) published in Neurospine, additionally demonstrated favorable clinical outcomes. Link: and


The dualPortal® technique is Amplify Surgical’s novel two-portal endoscopic approach to the spine that allows surgeons to easily learn and perform a wider array of lumbar spine procedures than the conventional one-portal technique. Also referred to as (unilateral) biportal endoscopy, dualPortal® provides flexibility to perform endoscopic lumbar fusions with the dualX® Dual Expanding Interbody Fusion System.


About Amplify Surgical, Inc.: Amplify Surgical is a privately-held spinal device company located in Irvine, CA. The company’s mission is to revolutionize minimally invasive spine surgery by transforming ordinary procedures with groundbreaking surgical solutions that improve patient safety and outcomes.