Proximal Humerus Fracture Dislocation Direction and Avascular Necrosis

Inclusion Criteria: * Patients 18 years of age or older * Patients who underwent operative fixation of proximal humerus fracture dislocation at Royal Columbian Hospital between January 2011 and July 2021 * Willing and able to consent and complete patient reported outcome measures * Willing and able to follow the protocol and attend a follow-up visit * Able to read and understand English or have an interpreter available Exclusion Criteria: * Skeletally immature patients * Patient with pathological fractures * Patients who have had previous operative fixation of proximal humerus * Patients treated non-operatively * patients presenting outside of the study duration window * Patients treated by a non-participating surgeon * Deceased patients * Patients unable to complete patient reported outcome measures * Patients declining to come back to the clinic for updated x-rays * Dementia * Incarceration