Full-endoscopic interlaminar discectomy for herniation at L3–4 and L4–5: Technical note

SummaryFull-endoscopic interlaminar discectomy (FEILD) for herniations above the level of L5–S1 has been the subject of few studies. FEILD was performed between July 2009 and September 2009 on three patients with symptomatic lumbar disc herniations above the level of L5–S1. The patients were 29 years, 67 years, and 71 years of age, and had experienced symptoms for 2 months, 12 months, and 6 months, respectively. After the operation, the mean visual analog scale score decreased from 6.6 to 1.3 and the mean Oswestry Disability Index score decreased from 20.3 to 3. In conclusion, FEILD is feasible for the treatment of disc herniations at L3–4 and L4–5 and offers good functional outcomes in terms of visual analog scale and Oswestry Disability Index. To achieve a good outcome, a beginner should first master open microscopic lumbar discectomy and then start with observing procedures, assisting at procedures, and practicing FEILD on cadavers.