Privilege Viewer - Privilege Detail - Endoscopic laser foraminoplasty Successful completion of an ACGME or AOA accredited residency training program in orthopedic surgery or neurosurgery, followed by formal training in endoscopy for the spine and laser surgery for the spine. In addition, attendance at an ELF training workshop and proctored in initial cases by a physician experienced in the ELF procedure. Required Previous Experience - Demonstration of the performance of at least 25 ELF procedures in the past 12 months. Maintenance of Privilege - Applicant must be able to show maintenance of competence with evidence of the performance of at least 50 ELF procedures in the past 24 months.