Table 3 Comparison of baseline scapula anatomy and 2-year postoperative prosthesis position measurements between defined study groups

Scapular anatomy

 Scapular neck length (mm)

49

14.8 (11.7)

135

13.1 (6.4)

33

13.6 (4.6)

0.02 / 0.03 / 0.01

 Scapular neck angle (º)

49

82.4 (13.5)

135

83.2 (11.8)

33

85.1 (12.3)

0.04 / 0.01 / 0.04

P-value

Prosthesis position

 Lateral humeral offset (mm)

49

33.1 (8.1)

135

40.9 (4.8)

33

44.0 (4.5)

 < 0.001

 Distalization shoulder angle (º)

49

52.2 (10.8)

135

45.5 (10.5)

33

52.0 (8.2)

 < 0.001

 Inferior glenosphere overhang (mm)

49

5.9 (12.5)

135

2.8 (2.2)

33

5.8 (1.9)

0.002

 Glenosphere inclination angle (º)

49

98.2 (9.0)

135

102.3 (7.9)

33

101.4 (7.6)

0.013

 Lateralization Shoulder Angle (°)

49

78.4 (10.4)

135

87.4 (9.6)

33

83.9 (7.4)

 < 0.001