Period

Position of hyoid bone at rest

The position of the hyoid bone at highest elevation

AC

Angle BAC (˚)

AC’

Angle BAC’ (˚)

Preoperative

Postoperative, 1 month

Postoperative, 1 year

28.4

29.3

28.4

69.2

77.0

77.5

39.4

34.9

36.2

59.2

71.5

70.4