From the Research
Nerve Roots Affected by Epidural Injection in Kambin's Triangle
- The nerve roots affected by an epidural injection in Kambin's triangle are the exiting nerve roots and the traversing nerve roots 1, 2, 3, 4, 5
- The Kambin's triangle is a safe zone for epidural injections, with a low risk of nerve injury or dural tears 1, 2, 5
- The dimensions of the Kambin's triangle vary at different lumbar levels, with the area increasing from L1-L2 to L4-L5 1, 5
- The nerve roots are protected in this safe zone, and the thecal sac remains inviolate 1, 5
- The ideal operating target and actual safe area in Kambin's triangle have been calculated, and it has been proven that Kambin's triangle is safe enough for percutaneous endoscopic transforaminal oblique fixation from the posterior corner (PETOFPC) 2
- The contrast medium volume needed to reach the anterior epidural space via the Kambin triangle or subpedicular approach for transforaminal epidural injection is comparable in both approaches 3
- Magnetic resonance neurography (MRN) allows clearer and more accurate visualization of the nerve roots, and the basic anatomic study of the Kambin's triangle based on this technology is of practical clinical significance 5