Fig. 4From: Study of single-level lumbar degenerative diseases treated by unilateral wiltse access with unilateral nail rod fixation assisted by a new automatic retraction deviceVAS and CK in two groups. A Preoperative and postoperative leg pain level in two groups. B Preoperative and postoperative lumbar pain level in two groups. C Changes in preoperative and postoperative creatine kinase in the two groups. *P < 0.05Back to article page