study question was not suitable

Pelvic ring fractures in the elderly are associated with high morbidity during standard conservative treatment due to immobility. Furthermore the risk of long term dependence even after the fracture has united is high. In analogy to the treatment of hip fractures in a similar patient population, patients might benefit from surgical treatment due to a reduction in pain and early mobilization.

Comparison of surgical vs conservative treatment with respect to mobility, pain, morbidity and mortality.

Inclusion Criteria:

• CTI/MRI verified fracture of the sacrum affecting the posterior ring or both posterior and anterior ring
• age>65 years, ambulatory with/without walking aids before Trauma
• ambulatory with/without walking aids before trauma
• postmenopausal status in women
• informed consent for study participation and surgery

Exclusion Criteria:

• Refusal of consent by the patient or legal representatives to participate in the study
• Other fractures or
• Unstable pelvic fracture (type B or C according to classification of 'Arbeitsgemeinschaft für Osteosynthesefragen' (AO)/OTA) requiring surgical stabilisation after high- or low-energy trauma
• Suspicion of a pathological fracture in the context of known or unknown malignancy
• Previous surgery of the pelvis with metal obstructing the planned paths of the ilio-sacral screws
• Symptomatic low back pain with morphological changes, i.e. intervertebral disc displacement, neoplasm metastasis in the axial skeleton, spinal stenosis, vertebral fracture, spondylarthropathy etc.
• Comorbidity that precludes undergoing general or spinal anaesthesia
• Pre-trauma mobility status that precludes achieving a post-trauma mobility status enabling the patient to perform the timed up and go test (e.g. patient being in a wheel chair)