Clinical Study

Foraminoplasty at the Tip or Base of the Superior Articular Process for Lateral Recess Stenosis in Percutaneous Endoscopic Lumbar Discectomy: A Multicenter, Retrospective, Controlled Study with 2-Year Follow-Up

Table 6

Changes of preoperative and postoperative SF-36 MC scores .

Time pointPre-operation1 year postoperatively2 years postoperatively

Group A28.4±8.155.8±9.362.2±8.1

Group B29.1±7.756.3±10.161.1±7.3

MC:  mental component.