Zibo Seventh People''s Hospital Zibo City China 255000;
Zibo Seventh People''s Hospital Zibo City China 255000;
Zibo Seventh People''s Hospital Zibo City China 255000;
Zibo Seventh People''s Hospital Zibo City China 255000;
Zibo Seventh People''s Hospital Zibo City China 255000;
Zibo Seventh People''s Hospital Zibo City China 255000;
Intervertebral foramen; BEIS technique; Laminectomy; Lumbar disc herniation;