Determine the prevalence, etiologies, and risk factors of unplanned return to the OR (UROR) in adult orthopaedic trauma patients. Retrospective review of a trauma prospective registry from 2014 – 2019 at a Level 1 academic hospital. An UROR was defined as a patient returning to OR unexpectedly following a planned definitive surgery to either readdress the presenting diagnosis or address a complication arising from the index procedure. Univariate and multivariate logistic regression was performed comparing those patients with an UROR versus those without. A total of 1568 patients were reviewed. The rate of UROR was 9.8% (153 patients). Symptomatic implant was the leading cause of UROR (60%). Other significant UROR causes were infection (15%) and implant failure (9%). The median time between index procedure and UROR was 301 days. For the univariate and multivariate analysis, open fracture (p< 0.05), fracture complexity (p<0.01), and weekend procedure (p< 0.01) were all associated with increased risk of UROR. All other variables were not statistically significant for any associations. Those patients with an UROR for reasons other than symptomatic implants were more likely to have polyorthopaedic injuries (p < 0.05), ISS > 15 (p < 0.05), osteoporosis (p < 0.01), ICU status (p < 0.05), psychiatric history (p < 0.05), compartment syndrome (p < 0.05), neurovascular injury (p < 0.01), open fracture (p < 0.05), and fracture complexity (p < 0.05). The rate of UROR in the orthopaedic trauma patient population is 10%. Most of these cases are due to implant-related issues. UROR for reasons other than symptomatic implants tend to be polytraumatized patients with higher-energy injuries, multiple complex fractures, and associated soft tissue injuries. Future focus on improved implant development and treatments for polytraumatized patients with complex fractures is warranted to decrease a relatively high UROR rate in orthopaedic trauma

BACKGROUND. Since 1996, the Scottish Hip Fracture Audit (SHFA) group have published reports on the outcomes of patients with hip fractures. In the 2008 report, the group outlined the target standard that “98% of medically fit patients who have sustained a hip fracture should be operated on within 24 hours of ‘safe operating time’ (i.e. between 8 am and 8pm, seven days a week).”. 1. . AIM. We aim to investigate the compliance of our unit to the SHFA target standard. METHODS. We prospectively examined patients who were admitted with hip fractures between 1. st. April to 31. st. July 2011. These included admissions from A&E and inpatients. Patients who did not receive surgical treatment were excluded. Information was collected using the same pro forma as the SHFA group. RESULTS. There were 72 patients with hip fractures in that period. One patient (1.4%) was considered unfit for surgery and therefore excluded. Sixty-five patients were considered fit for surgery on first assessment and 61 (93.8%) had surgery within the target time. There were three patients (4.6%) whose diagnosis was delayed waiting for MRI. The waiting period included a weekend in two patients, when there were no MRI facilities. Only one patient (1.5%) had surgery delayed due to lack of theatre availability. DISCUSSION. Having surgery performed as early as possible is associated with a beneficial impact on morbidity, complications and length of hospital stay. 2–4. , reflected with SIGN guidelines stating “surgery should be performed as soon as the medical condition allows”. 5. and NICE recommending surgery within 48 hours of admission. 6. . CONCLUSION. Although our rate of 93.8% does not meet the target standard, it represents an improvement from the published rate (91.2%) in 2008. It also highlights the areas for improvement in patient care, particularly in getting MRIs swiftly to avoid delays