Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Spine
Abstract number: 23274
PELVIC INCIDENCE AS A UNIQUE PREDICTOR OF SPINAL DEGENERATIVE
DEFORMITY
Tetsuya KOBAYASHI, Kiyoshi AONO, Issei SENOO, Yuji ATSUTA, Takeo
MATSUNO
Asahikawa Medical College, Asahikawa (JAPAN)
[Introduction] There is a growing concern about the relationship between sagittal
spinal alignment and spinal pathologies. Pelvic incedence (PI), a morphological
parameter not affected by the posture or the pelvis position, has been suggested as
a unique predictor of spinal degenerative deformities such as spondylolisthesis (DS)
and kyphosis (LDK). The purpose of this study was to investigate the influence of PI
on the development of DS and LDK in a prospective cohort. [Methods] A final total of
227 female volunteers, aged 40+ years at baseline were followed for more than 8
years. Entire spine radiographs were used for measuring sagittal spinal alignment
including PI. Magnitude of spondylolisthesis was evaluated in 142 women without DS
at baseline radiograph, and development of more than 5% slip was diagnosed as
newly-developed DS. LDK was diagnosed by the angle of L1-S1