Anahtar KelimelerEndoskopik Diskektomi; Perkütan Endoskopik Diskektomi; Transforaminal Endoskopik Diskektomi Abstract Aim: Minimally invasive interventions have become increasingly popular with the developments in technology and surgical tools. In this article, we present our experience with 67 cases of percutaneous transforaminal endoscopic lumbar discectomy. Material and Method: A total of 67 cases that underwent endoscopic surgery for foraminal and extraforaminal disc hernia between 2004 and 2010 were retrospectively examined. Results: The mean pre-operative VAS score was 8.13. The mean post-operative VAS score was 2.4 in the 1st month and 2.01 in the 12th month. Satisfaction according to MacNab criteria in the 12th month was excellent in 35 (52.2%) patients, good in 18 (26.9%) patients, fair in 11 (16.4%) patients, and poor in 3 (4.5%) patients. Microdiscectomy was required due to continuing symptoms in 3 patients (4.5%). Temporary dysesthesia was found in 3 patients. Discussion: Percutaneous endoscopic discectomy has become a good alternative to microsurgery for foraminal and extraforaminal disc herniations because of the developments in technology and surgical tools as well as the increased experience of surgeons. The technique is not limited to these localizations; it can also be used for free fragments within the channel, recurrent disc herniations, and narrow channels.