Research Information System
Kırıkkale Üniversitesi Tıp Fakültesi Dergisi, vol.23, no.1, pp.59-67, 2021 (Peer-Reviewed Journal)
Objective: In this study, it was aimed to put forward the
effects of the morphological characteristics of the sacrum on
the choice of iliosacral or transsacral screwing.
Material and Methods: The study was carried out on 224
patients who underwent computerized tomographic imaging of
the pelvis between May 2016 and May 2019. By reviewing the
images of the patients, parameters such as sacrum types,
applicability for transsacral screwing, the narrowest diameter
of the bone corridor in the coronal plane where the screw was
placed properly, and the anteversion angle of the screw were
evaluated. Moreover, the distribution of these data according to
age and gender was compared between the groups.
Results: Of the patients' sacrums; 72 (32.1%) were the
ascending type, 28 (12.5%) were the descending type, 106
(47.3%) were the horizontal type, and 18 (8%) were the
dysmorphic type. While transsacral screwing could be
performed in 136 (60%) of the sacrums, it was not possible in
88 (40%). The width of the narrowest part where the iliosacral
screw would pass was 19.52 (52 (min-max:11.8-47)) mm on
average in all patient groups. There was no difference only
between the horizontal and the descending types in terms of
the narrowest diameter through which the iliosacral screw
would pass. The anteversion angle of the iliosacral screw was
25.4 (min-max:5-52.5) degrees on average in all patients. The
anteversion angle of the iliosacral screw varied between all
sacrum types.
Conclusion: Differences in the sacrum morphology in patients
who will undergo iliosacral or transsacral screwing affect the
choice of surgery to be applied. For this reason, preoperative
surgical planning is essential according to the sacrum
morphology.