Morbidity and mortality of fragility proximal humerus fractures: a retrospective cohort study of patients presenting to a level one trauma center.

PURPOSE: Fragility fractures are a significant source of morbidity and have high associated mortality. Identifying risk factors for poor outcomes is essential for guiding treatment and for setting expectations for patients and their families. Although fragility hip fractures have been abundantly explored, there is a paucity of information regarding proximal humerus fractures (PHFs). METHODS: We retrospectively review the electronic medical records of 379 patients who presented to a level 1 trauma center with a PHF secondary to a fall. Patient demographics, handedness, comorbidities, treatment, imaging data, follow-up data, and death date (if applicable) were recorded. RESULTS: Our cohort consisted of 279 females and 100 males with an average age of 71.4 years. Distribution of injuries was 178 left, 141 right, and 7 bilateral. Compared with handedness, 179 were ipsilateral, 141 were contralateral, and 59 were unknown. A total of 81.3% of injuries were treated nonoperatively, whereas 18.7% were managed surgically. One-year mortality was 17.4%, and 2-year mortality was 24.0%.Males demonstrated a 2.28 increased risk of 1-year mortality (P = .004). Patients who died within 1 year of fracture had significantly higher Charlson comorbidity index scores (P < .0001) and age (P = .0003). Risk of death was significantly lower in patients who underwent surgery compared with those who were treated nonoperatively (P = .01). Patients who used an assist device before fracture had 4.2 increased risk of 1-year mortality (P < .0001). Patients who presented from nursing homes or assisted living had a 2.1 increased risk of 1-year mortality (P = .02). Patients with severe liver disease had a 5.5 increased risk of 1-year mortality (P < .0001), and those with metastatic cancer had a 13.7 increased risk of 1-year mortality (P < .0001). Bilateral fractures, side of injury in relation to handedness, rehospitalization, Neer classification, and PCP follow-up within 30 days were not associated with increased mortality. CONCLUSIONS: Increased understanding risk factors for mortality after PHF will allow for more informed patient discussions regarding treatment outcomes and risk of death. Our data suggest that mortality at 1 year for fragility PHF is universally high regardless of risk factors. This risk is increased in patients who are older, functionally limited, or who have medical comorbidities. Our data demonstrate the importance of medical optimization of patients with a fragility PHF and underscore the importance of fall prevention in high-risk patients.

Patterns of concomitant injury in thoracic spine fractures.

Background: Thoracic spine fractures (TSFs) are rarely isolated injuries, and they tend to present with a characteristic set of vertebral and non-vertebral injuries based on mechanism of injury. There is limited research on the rates and distribution of injuries that occur concurrently with TSFs. The purpose of this study is to characterize the distributions of these injuries by region of the body and by mechanisms of injury, so that trauma and spine surgeons can efficiently evaluate and treat patients presenting with TSFs. Methods: We retrospectively reviewed the trauma database records of 683 patients presenting with a TSFs at a single institution from 2015 to 2019. We recorded patient demographics, comorbidities, and associated injuries by body region. We characterized the TSFs using the AO classification system, as well as the presenting physical exam and treatment. All associated injuries among the TSF patients were classified into the following categories: head injury (HI), thoracic injury (TI), non-thoracic vertebral injury (NTVI), abdominal injury (AI), upper extremity injury (UEI), lower extremity injury (LEI), and spinal cord injury (SCI). Results: The three leading causes of TSFs were mechanical falls (38.4%), falls from height (24.9%), and motor vehicle crashes (MVCs) (23.4%). Patients with a TSF from MVC were statistically more likely to have concomitant injuries of TI, NTVI, AI, HI, UEI, and LEI. TSFs from fall from height were statistically more likely to have TI, NTVI, and LEI. TSFs from mechanical falls had significantly lower rates of all injury locations, but still presented with high rates of additional injury. TSFs from motorcycle crashes (MCCs) presented with TI, AI, UEI, and LEI. There were high rates of treatment for TSFs, with surgery ranging from 5.3% to 20.0% and bracing from 52.3% to 65.7% depending on mechanism of injury. Conclusions: TSFs after MVCs, mechanical falls, falls from height, and MCCs presented with a predictable pattern of injuries and were rarely an isolated injury. This cross-sectional data may help spine and trauma surgeons better understand patterns of injury associated with TSFs, with the hope of preventing missed injuries and better advising patients with TSFs on severity of injuries.