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Table 1 Details of the included studies

From: Comparison of posterior cruciate retention and substitution in total knee arthroplasty during gait: a systematic review and meta-analysis

First author

Year

Study type

Mean age (years)

Sample size (M/F)

Weight(kg)/height(m)

Follow-up (months)

Outcomes

CR

PS

CR

PS

CR

PS

Beach [21]

2019

PCS

67.6

69.1

26 (NA)

26 (NA)

85.3/1.696

89.8/1.711

At least 12

WS, F1

Bolanos [17]

1998

PCS

66

66

14 (1/13)

14 (1/13)

NA

NA

Mean 98

F2, F3, F5, F6, KSS

Gray [20]

2020

PCS

71.5

66.8

25 (16/9)

23 (14/9)

89.6/1.7

89.4/1.703

Mean 6

WS, F5, F6

Hajduk [13]

2016

PCS

68.13

65.68

23 (4/19)

19 (5/14)

84.43/1.63

87.42/1.65

At least 12

WS, F1, F2, F3, F4, F5, F6, F, KSS

Hamai [22]

2015

PCS

70

75

12 (1/11)

12 (0/12)

NA/1.51

NA/1.47

Mean 25

F, E, KSS

Ishii [18]

1998

PCS

67.6

68.5

11 (6/5)

9 (4/5)

NA

NA

At least 18

F2, F5

Maruyama [24]

2004

PCS

74.3

74.3

20 (8/12)

20 (8/12)

NA

NA

At least 24

F, E, KSS

Udomkiat [19]

2000

RCS

70.2

70.8

38 (16/22)

38 (16/22)

71.53/NA

71.67/NA

At least 24

F, E, KSS

van den Boom [23]

2014

PCS

72

75

9 (7/2)

12 (5/7)

NA

NA

At least 6

F1, F2, F3, F4, F, E, KSS

  1. RCS retrospective comparative study, PCS prospective comparative study, M male, F female, CR posterior cruciate retention, PS posterior cruciate substitution, NA not available, F1 flexion at heel strike (°), F2 maximum flexion during loading response (°), F3 flexion range during loading (°), F4 minimal flexion at terminal stance (°), F5 maximal flexion at swing (°), F6 total flexion during the gait cycle (°), F knee flexion angle (°), E knee extension angle (°), WS walking speed (m/s), KSS Knee Society Score