Table 1.

Group demographics are compared for the open/arthroscopic, all-arthroscopic, and open posterior/open anterior cohorts using analysis of variance

Demographic	Open/arthroscopic	Arthroscopic	Open/open	p value
Male (number)	3	9	4	0.90
Female (number)	8	17	7	0.90
Age at index (years)	34	32	24	0.053
Time from index surgery to most recent followup (months)	41	70	84	0.26
Time from symptom onset to index synovectomy (months)	55	32	22	0.39
Baseline arthritis (Outerbridge grade)	0.9	0.9	0.3	0.39