Fig. 3

The overall progression of local kyphosis after compressive cervical spine fractures. a The results of the local kyphosis at the time of injury (n = 13) and at the time of final follow-up (n = 13) measured by the posterior tangent method. b The relationship between the progression of local kyphosis measured by the posterior tangent method and the duration of the follow-up period. c The results of the local kyphosis at the time of injury (n = 13) and at the time of final follow-up (n = 13) measured by the endplate method. d The relationship between the progression of local kyphosis measured by the endplate method and the duration of the follow-up period. There is little correlation between the progression of local cervical kyphosis and the duration of the follow-up period