Fixed-loop vs. adjustable-loop cortical button devices for femoral fixation in ACL reconstruction – a systematic review and meta-analysis

Elmholt, Simone Birkebæk; Nielsen, Torsten Grønbech; Lind, Martin

doi:10.1186/s40634-022-00544-1

Journal of Experimental Orthopaedics

Table 1 Study characteristics

From: Fixed-loop vs. adjustable-loop cortical button devices for femoral fixation in ACL reconstruction – a systematic review and meta-analysis

Study (year)	Study design	FLD device	ALD device	Tibial fixation	Patients			Age (mean, SD)		Sex, Males (n, %)
Study (year)	Study design	FLD device	ALD device	Tibial fixation	Total	FLD	ALD	FLD	ALD	FLD	ADL
Firat et al. (2014) [14]	Retrospective	Endobutton	ToggleLoc with ZipLoop	Bioderadable screw	78	46	32	28.4 (4.2)	27.7 (4.2)	35 (76)	25 (78)
Boyle et al. (2015) [5]	Retrospective	Retrobutton	TightRope	Staple and interference screw	188	115	73	26.1 (11.0)	25.8 (11.7)	64 (56)	50 (68)
Lanzetti et al. (2016) [25]	Prospective	Endobutton	TightRope	Bioderadable screw	44	22	22	26.1 (3.4)	25.2 (3.6)	16 (73)	17 (77)
Choi et al. (2017) [9]	Retrospective	Endobutton	TightRope	Bioderadable screw	117	67	50	29.9 (11.5)	28.2 (11.6)	55 (82)	41 (82)
Sundararajan (2018) [41]	Retrospective	Endobutton	TightRope	Bioderadable screw	98	44	54	37^b^,d	33^b^,d	38 (86)	41 (76)
Pokharel et al. (2018) [33]	Prospective	Endobutton	TightRope	Bioderadable screw	60	30	30	33 (18.2)	31 (20)	26 (87)	24 (80)
Asmussen et al. (2018) [4]	Retrospective Register-based	Endobutton	ToggleLoc with ZipLoop	Various types	1654	1538	116	26.1^d	25.9^d	860 (56)	71 (61)
Ranjan et al. (2018) [34]	Prospective	Endobutton	TightRope	Bioderadable screw	102	52	50	28.7 (9.5)	30.4 (7.9)	41 (79)	40 (80)
Ahn et al. (2018) [2]	Retrospective	Retrobutton	TightRope	Bioderadable screw	29	22	17	30.7 (10.6)^c	32.6 (10.8)^c	39 (81)^c	51 (84)^c
Sheth et al. (2019) [36]	Prospective	Endobutton	TightRope	Bioderadable screw	62	31	31	30.1 (8.9)	30.8 (6.9)	25 (81)	24 (77)
Ahn et al. (2019) [1]	Prospective	Endobutton	TightRope	Bioderadable screw	79	41	38	32 (8.2)	31.2 (10.8)	31 (76)	29 (76)
Uribe et al. (2020) [43]	Prospective	Endobutton	TightRope	Interference screw^a	27	13	24	33.9 (11.2)	31.3 (11.7)	6 (46)	11 (46)
Mohamed et al. (2020) [28]	Prospective	Not described	Not described	Bioderadable screw	60	30	30	27.2 (3.3)	26.9 (2.5)	30 (100)	30 (100)
Ono et al. (2021) [31]	Prospective	Endobutton	TightRope	TightRope	28	13	15	25.2 (9.6)	25.7 (8.4)	6 (46)	8 (53)
Djordjevíc et al. (2021) [11]	Prospective	VersiTomic G-Lok	TightRope	Bioderadable screw	60	30	30	27.9 (6.9)	26.9 (6.4)	26 (87)	27 (90)

^aThree patients received an ALD for tibial fixation
^bDescribed as “average age” in the study
^cPatient characteristics measured before lost to follow-up
^dStandard deviations not available

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