Fragility Fractures of the Pelvis (FFP)

Year of birth, Gender, Ethnicity, Height (cm) and Weight (kg) will be combined to report BMI in kg/m^2

Concomitant diseases will be assessed using the Charlson Comorbidity Index (CCI). This score assesses the comorbidity level by considering both the number and severity of pre-defined comorbid conditions. It provides a weighted score of a patient's comorbidities which can be used to predict mortality rates. It is a 17-items questionnaire with score range from 0 to 37 points. It estimates the 10-year (or shorter) patient survival.

The MiniCog is a 3-minute instrument assessing cognitive impairment. It consists of two components, a 3-item recall test for memory and a simply scored clock drawing test. A total score ranges from 0 to 5. A score of zero, one or two out of five points in total, indicates a concern in cognitive functioning.

PROMIS (Patient-Reported Outcome Measurement Information System) Pain Interference (8 questions) assesses the impact of pain on common activities of daily life including social, cognitive, emotional, physical, and recreational aspects. The higher score represents a higher pain level.

PROMIS Physical Function (10 questions) assesses self-reported capability of physical activities including instrumental activities of daily living. A higher score indicates a better self-reported capability.

The EQ-5D-3L has five items (mobility, self-care, usual activities, pain/discomfort anxiety/depression) with a three-point categorical response scale level (1 = no problems, 2 = some / moderate problems, 3 = extreme problems) where the patient's current health status is assessed. A unique EQ-5D-3L health state is defined by combining one level from each of the five dimensions. The EQ-5D index score ranges from 0 (death) to 1 (best imaginable quality of life), and negative values express "worse than death" state.

Parker Mobility Scale assess the patient's ability to perform indoor walking, outdoor walking, and shopping before the fracture. A score ranges between 0 and 3 (0 = not at all, 1 = with help from another person, 2 = with an aid, and 3 = no difficulty and no aid) for each function, resulting in a total score ranging from 0 (no walking ability at all) to 9 (fully independent).

The Barthel index is an ordinal scale and each performance item is rated on this scale with a given number of points assigned to each level or ranking. It uses 10 variables describing activities of daily living and mobility. A higher number is associated with a greater likelihood of being able to live at home with a degree of independence following discharge from hospital.

The residential status will be documented at each visit during 1-year post-treatment phase.

Mortality will be assessed for 4 phases:

• Perioperative mortality
• Within the first 7 days after treatment (early-term)
• Within the first 3 months after treatment (mid-term)
• Until the last follow up (long-term mortality)

Position of the fracture fragments, to rule out secondary (additional) fracture fragments and displacement, or loosening of implants (Undisplaced, Displaced, Non-union with extensive callus)

In this registry, only condition- or treatment-related events (ie complications) will be collected . Partially those events presuppose themselves: eg, re-admission for a surgical revision. In those cases, details on those different events will be collected.