Meta-analysis of factors influencing anterior knee pain after total knee arthroplasty

Table 1 Basic information (e.g., patellar resurfacing vs no patellar resurfacing)

Ref.	Follow-up time	Patients included (resurfacing/non-resurfacing)	Resurfacing		Non-resurfacing
			Patients with AKP	Patients available	Patients with AKP	Patients available
Koh et al[16], 2019	5 yr	49/49	29	49	30	49
Thiengwittayaporn et al[15], 2019	1 yr	42/42	0	41	2	39
Ha et al[17], 2019	5 yr	66/66	1	60	1	60
Deroche et al[13], 2022	18.0 months (mean)	123/123	14	116	15	105
Agarwala et al[4], 2018	19.0 months	60/60	7	60	9	60
Zou et al[19], 2011	16.5 months (mean)	64/64	7	64	9	64
Burnett et al[22], 2004	10 yr	50/50	7	19	5	20
Burnett et al[20], 2009	10 yr	59/59	8	38	6	40
Barrack et al[24], 2001	70.5 months	59/59	9	47	8	46
Wood et al[23], 2002	48.0 months (mean)	110/110	15	91	39	127

AKP: Anterior knee pain.

Table 2 The basic information of the studies (with or without circumpatellar denervation)

Ref.	Follow-up time	Patients included (denervation/non-denervation)	Denervation		Non-denervation
			Patients with AKP	Patients available	Patients with AKP	Patients available
Jonbergen et al[29], 2011	1 yr	150/150	25	131	42	131
Pulavarti et al[28], 2014	2 yr	63/63	53	61	51	58

AKP: Anterior knee pain.

Table 3 The basic information of the studies (with or without circumpatellar denervation)

Ref.	Follow-up time	Patients available (denervation/non-denervation)	Score	Denervation		Non-denervation
				Mean	SD	Mean	SD
Kwon et al[26], 2015	5 yr	50/50	PFS	14.10	1.00	14.20	1.20
Goicoechea et al[25], 2021	1 yr	88/81	PFS	12.60	3.50	13.60	2.70
Altay et al[27], 2012	3 yr	35/35	VAS	2.20	1.10	2.82	1.20
Deekshith et al[30], 2020	2 yr	50/49	VAS	1.34	0.47	1.60	0.53

VAS: Visual analog scale; PFS: Patellofemoral Feller score.

Table 4 The basic information of the studies (effects of using fixed or mobile-bearing total knee arthroplasty)

Ref.	Follow-up time	Fixed		Mobile
		Patients with AKP	Patients available	Patients with AKP	Patients available
Feczko et al[31], 2017	5.0 yr	11	48	6	42
Breugem et al[32], 2014	7.9 yr	5	40	5	29

AKP: Anterior knee pain.

Table 5 The basic information of the studies (lateral retinacular release vs non-release)

Ref.	Follow-up time	Lateral retinacular release		Non-release
		Patients with AKP	Patients available	Patients with AKP	Patients available
Zhu et al[33], 2017	5 years	4	64	12	62
Zha et al[34], 2014	7.9 years	4	71	14	68

AKP: Anterior knee pain.