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How I do it: The K-point approach in unilateral biportal endoscopic lumbar discectomy: a bone and ligamentum flavum
Hong Gyu Baek1, Yong Jin Park2, Dae-Chul Cho1
1Department of Neurosurgery, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, 130 Dongdeok-ro, Jung-gu, Daegu, 41944, Korea.
Background:
Conventional unilateral biportal endoscopic discectomy for subarticular herniations frequently necessitates extensive hemilaminectomy, increasing the risks of iatrogenic instability and epidural scarring.
Method:
The K-point approach is a precision docking technique utilizing the medial junction between the inferior and superior articular processes. By creating a strategic lateral corridor, it minimizes bone removal and exposes the lateral margin of the ligamentum flavum, allowing direct access to the traversing nerve root.
Conclusion:
By reducing bone resection and preserving the ligamentum flavum, the K-point approach enhances surgical efficiency and provides a refined minimally invasive alternative for subarticular disc herniations.
