Table 4 Qualitative synthesis of studies comparing semitendinosus alone and semitendinosus with gracilis autografts which were not included in the forest plots due to reporting specified knee angles, other positions than seated, eccentric assessment or at other timepoints than 6, 12 and ≥ 24 months

Ardern (2010) [26] 60°/s

S: 33.5 ± 4.1 SG: 31.4 ± 7

Seated

S: -30.4 ± 87.0

SG: -12.2 ± 99.3

S: 14.6 ± 31.6

SG: 10.4 ± 29.4

S: 21.7 ± 44.7

SG: 24.7 ± 40.1

Ardern (2010) [26] 180°/s

S: 33.5 ± 4.1

SG: 31.4 ± 7

Seated

S: -28.6 ± 55.6

SG: -8.8 ± 74.4

S: -10.3 ± 106.9

SG: 21.2 ± 196.1

S: -48.0 ± 109.4

SG: 13.3 ± 51.9

Barenius (2013) [27] 60°/s

S: 36 ± 4

SG: 37 ± 6

Seated

S: 14.2 ± 30

SG: 22.0 ± 36

de Geofroy (2022) [29] Angular velocity unspecified

Both: 4

Unspecified

S: 17

SG: 26

de Geofroy (2022) [29] Angular velocity unspecified

Both: 8

Unspecified

S: 8

SG: 22

Gillet (2022) [31]

90°/s (Range)

Both: 6

Seated

S: 18.6–21.3

SG: 12.3–25.1

Gillet (2022) [31]

180°/s (Range)

Both: 6

Seated

S: 10.2–16.2

SG: 10.5–21.1

Gillet (2022) [31]

240°/s (Range)

Both: 6

Seated

S: 13.9–16.8

SG: 11.9–19.0

Gillet (2022) [31]

30°/s, eccentric (Range)

Both: 6

Seated

S: 12.5–26.2

SG: 5.9–24.2

Lee (2019) [34]

60°/s

S: 37.5 ± 5.9

SG: 36.8 ± 6.1

Prone (60°-120°)

S: 13.4 ± 8.9

SG: 24.2 ± 13.4

Monaco (2018) [35] 60°/s

Both: 13 (12–14)

Seated

S: 3.1 ± 10.3

SG: -11 ± 11.2

Monaco (2018) [35] 180°/s

Both: 13 (12–14)

Seated

S: -7.5 ± 11.2

SG: -7.6 ± 15.4

Nakamura (2002) [36] 60°/s

Both: 24

Unspecified

S: 19.8 ± 27.5

SG: 21.2 ± 21.7

Nakamura (2002) [36] 180°/s

Both: 24

Unspecified

S: 10.6 ± 14.3

SG: 28.5 ± 30.3

Sengoku (2022) [38] 60°/s

Both: 3

Unspecified

S: 8.3 ± 18.7

SG: 16.2 ± 21.8

Sengoku (2022) [38] 180°/s

Both: 3

Unspecified

S: 4.7 ± 26.9

SG: 12.6 ± 21.6