Table 1 Overview of all tested situations (five models at three shoulder flexion angles) and information on whether and after which posterior translation (mm) the humeral head was either in contact with the acromion or dislocated posteriorly

60° Flexion

Normal

yes

8.1 (0.0)

8.1–8.1

no

n.a

n.a

B1 Acromion + Glenoid Correction

yes

9.1 (0.2)

8.8–9.5

no

n.a

n.a

B1

yes

11.9 (0.0)

11.9–11.9

no

n.a

n.a

B1 Acromion Correction

yes

12.2 (0.2)

11.6–12.7

no

n.a

n.a

B1 Glenoid Correction

yes

13.3 (0.1)

13.2–13.5

no

n.a

n.a

90° Flexion

Normal

yes

9.9 (0.1)

9.8–10.1

no

n.a

n.a

B1 Acromion + Glenoid Correction

yes

10.6 (0.2)

10.1–11.1

no

n.a

n.a

B1

yes

18.3 (0.3)

17.5–19.1

yes

22.3 (0.2)

21.9–22.7

B1 Acromion Correction

yes

16.4 (0.5)

15.2–17.7

yes

28.4 (1.7)

24.1–32.7

B1 Glenoid Correction

yes

18.1 (0.2)

17.5–18.6

yes

27.0 (0.2)

26.6–27.4

120° Flexion

Normal

yes

11 (0.8)

9.1–12.9

yes

25.2 (0.6)

23.8–26.6

B1 Acromion + Glenoid Correction

yes

11.5 (1.1)

8.8–14.2

yes

25.7 (0.7)

23.9–27.5

B1

no

n.a

n.a

yes

22.3 (0.2)

21.9–22.7

B1 Acromion Correction

yes

17.5 (0.1)

17.4–17.7

yes

26.5 (0.2)

26.1–26.9

B1 Glenoid Correction

yes

19.7 (1.3)

16.5–22.8

yes

26.6 (1.2)

23.6–29.6