Table 2.

Outcome of 17 patients received surgical management

Outcome	Surgical management and joint fusion(n = 17)
Estimate Blood Loss(ml)	187.6 ± 86.7
Duration of Surgery(min)	112.6 ± 18.5
	Pre-op		Post 7 day		Post 3 month
ESR(mm/h)	52.2 ± 23.0		36.5 ± 8.8		9.3 ± 2.7
	Time Postoperation
	Pre-op	3	6	12	24
VAS	6.0 ± 1.7	3.0 ± 0.8	2.1 ± 0.6	0.5 ± 0.5	0.5 ± 0.5
ODI (%)	62.7 ± 21.4	49.7 ± 11.8	35.3 ± 11.3	3.1 ± 1.7	2.7 ± 1.6

The normal reference value of ESR in our hospital: <15 mm/h (male), <20 mm/h (female)