Should synovectomy be performed in primary total knee arthroplasty for osteoarthritis? A meta-analysis of randomized controlled trials

Table 1 The general characteristics of the included studies

Study	Sample size (intervention/control)	Mean age (year)	Gender (male/female)	Mean BMI (kg/cm²)	Intervention	Control	Outcomes	Design	Follow-up
Bernal-Fortich et al. [16]	148 (75/73)	70	53/95	29	Synovectomy	Synovium retention	1, 6, 7, 9	RCT	1 year
Kilicarslan et al. [19]	100 (50/50)	68	30/70	NS	Synovectomy	Synovium retention	1, 3, 4, 5, 8	RCT	1 year
Rankin et al. [15]	40 (20/20)	68	29/11	28	Synovectomy	Synovium retention	4, 6, 7, 9	RCT	1 year
Tanavalee et al. [18]	67 (34/33)	70	13/54	28	Synovectomy	Synovium retention	2, 3	RCT	26 weeks
Zhaoning et al. [17]	187 (96/91)	68	48/139	27	Synovectomy	Synovium retention	1, 2, 3, 4, 5, 6, 7, 8	RCT	1 year

1, VAS; 2, clinical KSS; 3, functional KSS; 4, range of motion; 5, drainage; 6, pre- and postoperative hemoglobin difference; 7, transfusion rate; 8, operative time; 9, complication

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