Table 4.

Treatment regimen and effect evaluation

Data collection/recording	Person in charge	Observational phase	Interventions	Follow-up phase
		1 day before surgery	Surgery	2 weeks after surgery	3 months after surgery	6 months after surgery	1 year after surgery
Obtaining informed consent	Yan-lu Liu	×
Collecting patients’ basic information and medical history	Akram Osman Nianrong Han	×
Screen patients for eligibility	Wei Hu Akram Osman	×
Interventions	Yi-fei Huang		×
ODI	Yan-lu Liu Zhan-jun Ma	×		×	×	×	×
VAS for pain	Yan-lu Liu Zhan-jun Ma	×		×	×	×	×
BSF score	Yan-lu Liu Zhan-jun Ma			×	×	×	×

ODI, Oswestry disability index; VAS, visual analog scale; BFS, Brantigan, Steffee, Fraser