Minimally invasive treatment of far lateral lumbar disc herniation: Selective nerve root block with percutaneous transforaminal endoscopic discectomy

Figure 2 According to the relationship between the location of the patient's intervertebral disc herniation and intervertebral foramina. A and B: The three far lateral lumbar disc herniation types were the intraforaminal type (type I); C and D: Intervertebral foramen external type (type II); E and F: Compound type (type III).