Systematic review: total knee arthroplasty (TKA) in patients with pigmented villonodular synovitis (PVNS)

Table 1 Studies included, study size, Knee Society Score (KSS), range of movement (ROM), stiffness, recurrence and quality assessment

Author	Year of study	Study size	KSS (functional)	KSS (clinical)	ROM pre-op	ROM post-op	Mean ROM (pre-op)	Mean ROM (post-op)	Stiffness	Recurrence	Quality assessment^a
Houdek et al. [13]	2017	48 TKAs D-PVNS: 40 L-PVNS: 8	45 to 62	54 to 87	30–35^o	60–130^o	99^o	101^o	13 knees	6 knees	++
Su et al. [15]	2019	28 TKAs D-PVNS: 28 L-PVNS: 0	48.9 to 84.6	38.9 to 84.4	60–100^o	90–130^o	86.1^o	107^o	0 knees	0 knees	++
Verspoor et al. [16]	2016	12 TKAs D-PVNS: 8 L-PVNS: 4	70.45 (post-op only)	77.6 (post-op only)	NR	NR	NR	NR	1 knee	1 knee	++
Lei et al. [14]	2016	11 TKAs D-PVNS: 8 L-PVNS: 3	35.0 to 81.8	40.5 to 90	60–100^o	95–120^o	80.5^o	109.5^o	0 knees	0 knee	++
Casp et al. [12]	2018	453 TKAs	NR	NR	NR	NR	NR	NR	31 knees	NR	++
		Total: 99 TKAs (552 TKAs including Casp et al.) D-PVNS: 84 L-PVNS: 15	74.71	84.75			92.51^o	104.01^o	45 knees	7 knees

^aQuality assessment of included articles (percentage of Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist met, < 50% = −, 50–80% = +, > 80% = ++). The STROBE checklist is available at https://www.strobe-statement.org/index.php?id=available-checklists
TKA total knee replacement, D-PVNS diffuse pigmented villonodular synovitis, KSS Knee Society Score, L-PVNS localized pigmented villonodular synovitis, NR not reported, pre-op pre-operative, post-op post-operative, ROM range of motion

ISSN: 2234-2451