case_images: PMC11723722_01
case_images: (a and b) Magnetic resonance imaging illustrating a right paracentral disc protrusion at the L4-L5 level.
case_images: JOCR-15-67-g001.jpg
case_images: PMC11723722_01_JOCR-15-67-g001.jpg
case_images: F1
case_images: Pre-operative X-rays showed no instability, while magnetic resonance imaging revealed a right paracentral disc protrusion at the L4-L5 level (Fig. 1a and b).
case_images: Unilateral biportal endoscopy performed in the lateral position.
case_images: JOCR-15-67-g002.jpg
case_images: PMC11723722_01_JOCR-15-67-g002.jpg
case_images: F2
case_images: To alleviate his symptoms, we performed a unilateral biportal endoscopic discectomy (UBE) in the lateral position for L4-L5 protruded disc (Fig. 2).
case_images: Patient positioned in the left lateral position.
case_images: JOCR-15-67-g003.jpg
case_images: PMC11723722_01_JOCR-15-67-g003.jpg
case_images: F3
case_images: Under general anesthesia, the patient is placed in the left lateral position for a right-sided disc pathology (Fig. 3).
case_images: Marking of the midline and medial pedicular line under C-arm guidance.
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case_images: PMC11723722_01_JOCR-15-67-g004.jpg
case_images: F4
case_images: Under C-arm guidance, midline and medial pedicular lines are marked (Fig. 4).
case_images: Working portal created in line with the lower endplate.
case_images: JOCR-15-67-g005.jpg
case_images: PMC11723722_01_JOCR-15-67-g005.jpg
case_images: F5
case_images: Using a 30  scope, the working portal is made in line with the superior endplate of the lower vertebra (Fig. 5), and the viewing portal is placed 3 cm cranial to the working portal (Fig. 6).
case_images: Delineation of the spinolaminar junction and inferior articular process of L4 using a radiofrequency probe.
case_images: JOCR-15-67-g007.jpg
case_images: PMC11723722_01_JOCR-15-67-g007.jpg
case_images: F7
case_images: Once the portals are created, the working space is established at the spinolaminar junction with the aid of a blunt periosteum, shaver, and radiofrequency ablation (Fig. 7).