['Lateral compression pelvic Type I fractures in the elderly population are most often low-energy osteoporosis related fractures. Previous literature comparing pelvic fractures in young versus elderly patients called into question the general consideration of these injuries as benign injuries with favorable prognoses; however, the geriatric population older than 80 years is often underrepresented. This article focuses on the mortality and functional outcomes after low-energy pelvic fractures in a population of patients older than 80 years.', "We prescreened potential subjects in a Level I trauma institution's electronic medical record database between January 1, 2002, and April 30, 2012, to identify isolated lateral compression Type 1 fractures treated nonoperatively in patients older than 80 years. This study was composed of a retrospective review of medical records followed by a prospective survey data collection to examine mechanisms of injury, length of hospital stay, complications, medical comorbidities, ambulatory function, living situation, pain, and 1 year mortality rates.", 'We present a large case series of 85 patients older than 80 years and report a 1-year mortality rate of 20%. We found that patients who were household ambulators or nonfunctional ambulators were five times more likely (24.4% vs. 6.1%) to die within 1 year after injury. Multivariate logistic regression confirmed that the risk of 1-year mortality was significantly higher for household-bound patients compared with community ambulators, independent of sex, smoking, Charlson comorbidity index, or length of hospital stay.'] Is preinjury ambulatory status associated with 1-year mortality following lateral compression Type I fractures in the geriatric population older than 80 years?