Summary:
The aim of this study was to compare the outcome of cemented sacroiliac screw fixation to
that of conservative treatment in nondisplaced fragility fractures of the sacrum during a 12-month
follow-up. Therefore, matched-pair analysis including 40 patients from a previously performed
prospective observational study was conducted. Pain was assessed using the visual analogue scale
(VAS), functional capabilities and mobility were assessed using the Barthel index, and health-related
quality of life (HRQL) was assessed using the EQ-5D questionnaire at 6 weeks, 6 months, and
12 months after the fracture, respectively. No significant differences between the two groups were
seen regarding pain. In the operative group, a significantly improved Barthel index was observed
after 6 months. A significantly higher HRQL was identified after 6 weeks in the operative group.
Their mobility was comparable between the two groups before the fracture; after 6 weeks, mobility
was significantly improved in the operative group. After 12 months, no significant differences were
found regarding the functional outcome, HRQL or mobility. The 1-year mortality rate was 25% in the
conservative group versus 5% in the operative group (not statistically significant). The present study
revealed favorable short-term outcomes concerning the functional outcome, HRQL and mobility
after sacroiliac screw fixation. After 12 months, the outcomes were similar to those of the patients
managed conservatively.