High-energy blunt pelvic ring injury: dataset of patients and injury characteristics from a severely injured patients’ registry.

Since mid-2013, data on high-energy trauma patients admitted to the Emergency Department of the University Hospitals of Geneva, Switzerland, are prospectively recorded in a dedicated registry. This includes data on patients with high-energy blunt pelvic ring injuries (PRI), defined as closed fracture of the pelvic ring following falls from a height >1 m, road traffic accidents, sport, crush, farm and industrial injuries. The registry was screened for patients aged ≥16 years with high-energy blunt PRI admitted to the aforementioned academic level I trauma center between 2014.01.01 et 2019.12.31, to assess the outcome of the institutional PRI management protocol. Data on 195 patients were collected and analyzed for this purpose [1]. The dataset “patients’ demographic and injury characteristics” provides the raw demographics and Abbreviated Injury Scale (AIS) of these 195 patients. These data can contribute to the knowledge of patients’ demographics and injury characteristics of high-energy blunt PRI patients.

Orthopaedics, sports medicine and rehabilitation; Surgery Specific subject area Demographic and injury characteristics of patients with high-energy blunt pelvic ring injuries. Type of data Tables How the data were acquired The dataset was obtained by screening the Severely Injured Patients' Registry (SIPR) of the University Hospitals of Geneva for patients with high-energy blunt pelvic ring injuries (PRI), according to the eligibility criteria mentioned under the "description of data collection" section. The dataset reports the age, sex, pelvic fracture classification, Abbreviated Injury Scale (AIS), and Injury Severity Score (ISS) of a cohort of 195 patients screened from the SIPR. Data format Raw Description of data collection The eligibility criteria for the dataset were: -Inclusion: 1) high-energy blunt PRI; 2) admission between 2014.01.01 and 2019.12.31; 3) age ≥16 years at admission.

Objective
Multiple predictors of mortality for high-energy PRI patients are studied in the literature, such as: massive bleeding, age, gender, fracture type, concomitant injuries, ISS [2] . The aim of the dataset is to show age, gender, fracture type, ISS and AIS in the studied patient population.

Data Description
Data shown in Tables 1 and 2 describe the injury characteristics and demographic of a cohort of 195 patients screened from the SIPR, studied by Valisena et al [1] . Table 1 shows age at the time of trauma, sex, and fracture classification according to the Arbeitsgemeinshaft für Osteosynthesefragen / Orthopaedic Trauma Association (AO OTA) [3] , AIS scores and ISS of 195 high-energy blunt PRI patients from the SIPR.
The AO OTA classification distinguishes pelvic fractures into 3 main types -A, B, and C, depending on the degree of injury to the posterior arch. Type A represents fractures with intact posterior arch, B fractures with incomplete posterior arch disruption, and C fractures with complete posterior arch disruption. Each fracture type is further stratified into groups and subgroups.
Type A fractures are stable at the level of the posterior arch, such as avulsion of the innominate bone apophysis (group A1), fracture of the innominate bone (group A2) and transverse sacral fracture (group A3).
Type B and C fractures are considered unstable. Type B fractures involve the anterior arch and partial disruption of the posterior arch: unilateral with internal rotation displacement/rotational instability (group B1), unilateral with external rotation displacement/rotational instability (group B2), and bilateral with bilateral rotational instability (group B3). Type C fractures can have unilateral (group C1) and bilateral (group C3) complete disruption of the posterior arch provoking rotational and vertical instability, or bilateral involvement of the posterior arch which is incomplete on one hemipelvis and complete on the other one (group C2). For each type and group, there are multiple subgroups and qualifications according to the pelvic fracture pattern.
The AIS score describes the severity of injuries from 1 to 6 in the following body districts: head and neck, face, chest, abdomen, pelvis and extremities, and external (skin wounds, burns and other traumas). Zero indicates no injury for the specific body system.
The ISS score evaluates the most severe injuries from the aforementioned 6 body systems, distinguishing among no injury, minor, moderate, serious, severe, critical, and unsurvivable injury, obtaining overall scores from 0 to 75.
Out of these 195 patients, 192 were eligible for a study assessing the clinical outcomes of the institutional high-energy blunt PRI protocol [1] ; three were not eligible because the patients had PRI management either at another institution (two cases) or not following the institutional protocol (one case). Table 2 shows the number of patients presenting concomitant head and neck, face, chest, abdomen, pelvis and extremities, and external injuries for each fracture type A, B, C according to the AO OTA classification [3] .

Experimental Design, Materials and Methods
The SIPR is an excel sheet including data on all high-energy trauma patients admitted to the University Hospitals of Geneva since mid-2013. This includes the following headings: demographics, prehospital and emergency department data (timing, vital parameters, accident details, imaging, fluid resuscitation, procedures), diagnosis, AIS and ISS, operations, intensive care management, outcome (mortality, post-acute care, complications). Around 300 items are recorded for each high-energy trauma patient, A subset of SIPR patients present high-energy blunt PRI, defined as a closed fracture of the pelvic ring following falls from a height > 1 m, road traffic accidents, sport, crush, farm and industrial injuries.
Data on this subset of patients are retrieved from the SIPR and collected in a separate highenergy blunt PRI patients database. Before the transfer of data from the SIPR to the high-energy blunt PRI patients database, patients' identity is coded. The data linkage table is only available by the senior author, Dr. PD Axel Gamulin, and saved in the hospital server whose access is secured by nominal username and password. Data collected in the high-energy blunt PRI patients database include: sex, age, date of the accident, date and hour of admission to the Emergency Department, mechanism of injury, ISS and AIS codes, survival, death (death date), complications (type, number per patient, procedures required for management), intensive care unit hospitalization (yes/no and length of stay), overall in-hospital length of stay, hemodynamic instability at admission, number of packed red blood cells concentrates received within 24 hours from admission, pelvic fracture classification according to the AO OTA [3] and Young-Burgess classifications [4] , emergency or urgent pelvic stabilization (type, date, timing), angioembolization (site of bleeding, site of embolization, timing), delayed surgery.
The dataset linked to this article reports the age, sex, pelvic fracture classification, AIS, and ISS of a cohort of 195 patients screened from the SIPR, studied by Valisena et al [1] .

Ethics Statements
The study was approved by the institutional research ethics board (Commission Cantonale d'Ethique de la Recherche, République et Canton de Genève, reference number 13-143R in 2013, re-approval reference number PB_2021-0 0 045 in 2021). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 declaration of Helsinki on medical research involving human subjects and its later amendments. For this type of study formal consent to participate was not required and was waived by the institutional research ethics board, even for minors under 18 years old.

Declaration of Competing Interest
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Data Availability
high-energy blunt pelvic ring injury (Original data) (Mendeley Data).