Safety and Outcomes of Inpatient Compared with Outpatient Surgical Procedures for Ankle Fractures

ORTHOPOD: Linking ambulatory future trauma injury distribution from fragility proximal femur fracture caseload

INTRODUCTION

The age of those experiencing traumatic injury and requiring surgery increases. The majority of this increase seen in older patients having operations after accidents is in fragility proximal femur fractures (FPFF). This study designed a model to predict the distribution of fractures suitable for ambulatory trauma list provision based on the number of FPFF patients.

METHODS

The study utilized two datasets which both had data from 64 hospitals. One derived from the ORTHOPOD study dataset, and the other from National Hip Fracture Database. The model tested the predictability of 12 common fracture types based on FPFF data from the two datasets, using linear regression and K-fold cross-validation.

RESULTS

The predictive model showed some promise. Evaluation of the model with mean RMSE and Std RMSE demonstrated good predictive performance for some fracture types, although the r-squared values showed that large variation in these fracture types was not always captured by the model. The study highlighted the dominance of FPFFs, and the strong correlation between these and numbers of ankle and distal radius fractures at a given unit.

DISCUSSION

It is possible to model the numbers of ankle and distal radius fractures based off the number of patients admitted with hip fractures. This has great significance given the drive for increased day case utilisation and bed pressures across health services. While the model's current predictability was limited, with methodological improvements and additional data, a more robust predictive model could be developed to aid in the restructuring of trauma networks and improvement of patient care and surgical outcomes.

Inpatient or Outpatient: Does Initial Disposition Affect Outcomes in Trimalleolar Ankle Fractures?

Background The repair of trimalleolar fractures can be challenging for surgeons and may be managed as an inpatient or an outpatient. However, it is often unclear whether these patients should be admitted immediately or sent home from the emergency department (ED). This study aims to evaluate trimalleolar fractures treated surgically in the inpatient or outpatient settings to evaluate differences in outcomes for these patients. Methods A retrospective chart review of 223 patients undergoing open reduction internal fixation of a trimalleolar ankle fracture was performed from January 2015 to August 2022. Patients were classified by whether the fixation was performed as an inpatient or outpatient. Outcomes of interest included time from injury to surgery, complications, ED returns, and readmissions within 90 days. Results Inpatients had significantly higher ASA scores, BMI, and rates of comorbidities. Inpatient treatment was associated with faster time to surgery (median 2.0 vs. 9.0 days) and fewer delayed surgeries more than seven days from injury (18.4 vs. 67.9%). There were no differences in complications, 90-day ED returns, readmissions, or reoperation between groups. Conclusions Inpatient admission of patients presenting with trimalleolar ankle fractures resulted in faster time to surgery and fewer surgical delays than outpatient surgery. Despite having more preoperative risk factors, inpatients experienced similar postoperative outcomes as patients discharged home to return for outpatient surgery. Less restrictive admission criteria may improve the patient experience by providing more patients with support and pain control in the hospital setting while decreasing the time to surgery.

Citizens' perspectives on relocating care: a scoping review

BACKGROUND

Healthcare systems around the world are facing large challenges. There are increasing demands and costs while at the same time a diminishing health workforce. Without reform, healthcare systems are unsustainable. Relocating care, for example, from hospitals to sites closer to patients' homes, is expected to make a key contribution to keeping healthcare sustainable. Given the significant impact of this initiative on citizens, we conducted a scoping review to provide insight into the factors that influence citizens' attitudes towards relocating care.

METHOD

A scoping review was conducted. The search was performed in the following databases: Pubmed, Embase, Cinahl, and Scopus. Articles had to include relocating healthcare and citizens' perspectives on this topic and the articles had to be about a European country with a strong primary care system. After applying the inclusion and exclusion criteria, 70 articles remained.

RESULTS

Factors positively influencing citizens' attitudes towards relocating care included: convenience, familiarity, accessibility, patients having more control over their disease, and privacy. Factors influencing negative attitudes included: concerns about the quality of care, familiarity, the lack of physical examination, contact with others, convenience, and privacy. Furthermore, in general, most citizens preferred to relocate care in the studies we found, especially from the hospital to care provided at home.

CONCLUSION

Several factors influencing the attitude of citizens towards relocating care were found. These factors are very important when determining citizens' preferences for the location of their healthcare. The majority of studies in this review reported that citizens are in favour of relocating care. In general citizens' perspectives on relocating care are very often missing in articles. It was significant that very few studies on relocation from the hospital to the general practitioner were identified.

Surgical Setting in Achilles Tendon Repair: How Does It Relate to Costs and Complications?

Background

Primary Achilles tendon repair (ATR) can be performed in ambulatory surgery centers (ASCs) or hospitals. We compared costs and complication rates of ATR performed in these settings.

Methods

We retrospectively queried the electronic medical record of our academic health system and identified 97 adults who underwent primary ATR from 2015 to 2021. Variables were compared between patients treated at ASCs vs those treated in hospitals. We compared continuous variables with Wilcoxon rank-sum tests and categorical variables with χ2 tests. We used an α of 0.05. Multivariable logistic regression was performed to determine associations between surgical setting and costs. Linear regression was performed between each charge subtype and total cost to identify which charge subtypes were most associated with total cost.

Results

Patients who underwent ATR in hospitals had a higher rate of unanticipated postoperative hospital admission (13%) than those treated in ASCs (0%) (P = .01). We found no differences with regard to postoperative complications, emergency department visits, readmission, rerupture, reoperation/revision, or death. Patients treated in hospitals had a higher mean (±SD) implant cost ($664 ± $810) than those treated in ASCs ($175 ± $585) (P < .01). We found no differences between settings with regard to total cost, supply costs, operating room charges, or anesthesia charges. Higher implant cost was associated with hospital setting (odds ratio = 16 [95% CI: 1.7-157]) and body mass index > 25 (odds ratio = 1.2 [95% CI: 1.0-1.5]). Operating room costs were strongly correlated with total costs (R2 = .94).

Conclusion

The overall cost and complication rate of ATRs were not significantly different between ASCs and hospitals. ATRs performed in hospitals had higher implant costs and higher rates of postoperative admission than those performed in ASCs.

Level of Evidence

Level III, retrospective comparative study.

Patients' preference regarding inpatient versus outpatient setting - A systematic review

OBJECTIVES

Continuously rising healthcare costs have led to financial pressure on the healthcare systems. One of the trends for the reduction of costs is the shift towards outpatient treatment. However, research has not focused on the patients' preferences regarding inpatient versus outpatient treatment settings. The purpose of this review is to examine existing studies surveying patients' preferences related to inpatient and outpatient treatment methods. The aim is to find out whether patients' wishes were queried and considered in the decision-making process.

DESIGN

Therefore, the reviewers performed a systematic approach utilizing the PRISMA standards and screened 1'646 articles out of 5'606 articles from the systematic search.

RESULTS AND CONCLUSION

The screening resulted in 4 studies that analyzed exclusively the patient's choice of treatment setting. The search showed an apparent paucity of current literature and highlights the need for further research. The authors' recommendation includes a better involvement of patients in the decision-making process as well as adding preferred treatment settings to advanced treatment directives and patient satisfaction questionnaires.

ORthopaedic trauma hospital outcomes - Patient operative delays (ORTHOPOD) Study: The management of day-case orthopaedic trauma in the United Kingdom

INTRODUCTION

ORTHOPOD: Day Case Trauma is a multicentre prospective service evaluation of day-case trauma surgery across four countries. It is an epidemiological assessment of injury burden, patient pathways, theatre capacity, time to surgery and cancellation. It is the first evaluation of day-case trauma processes and system performance at nationwide scale.

METHODS

Data was prospectively recorded through a collaborative approach. Arm one captured weekly caseload burden and operating theatre capacity. Arm two detailed patient and injury demographics, and time to surgery for specific injury groups. Patients scheduled for surgery between 22/08/22 and 16/10/22 and operated on before 31/10/22, were included. For this analysis, hand and spine injuries were excluded.

RESULTS

Data was obtained from 86 Data Access Groups (70 in England, 2 in Wales, 10 in Scotland and 4 in Northern Ireland). After exclusions, 709 weeks worth of data representing 23,138 operative cases were analysed. Day-case trauma patients (DCTP) accounted for 29.1% of overall trauma burden and utilised 25.7% of general trauma list capacity. They were predominantly adults aged 18 to 59 (56.7%) with upper limb Injuries (65.7%). Across the four nations, the median number of day-case trauma lists (DCTL) available per week was 0 (IQR 1). 6 of 84 (7.1%) hospitals had at least five DCTLs per week. Rates of cancellation (13.2% day-case; 11.9% inpatient) and escalation to elective operating lists (9.1% day-case; 3.4% inpatient) were higher in DCTPs. For equivalent injuries, DCTPs waited longer for surgery. Distal radius and ankle fractures had median times to surgery within national recommendations: 3 days and 6 days respectively. Outpatient route to surgery was varied. Dominant pathways (>50% patients listed at that episode) in England and Wales were uncommon but the most frequently seen was listing patients in the emergency department, 16 of 80 hospitals (20%).

CONCLUSION

There is significant mismatch in DCTP management and resource availability. There is also considerable variation in DCTP route to surgery. Suitable DCTL patients are often managed as inpatients. Improving day-case trauma services reduces the burden on general trauma lists and this study demonstrates there is considerable scope for service and pathway development and improved patient experience.

A cost analysis of ankle fractures treated by orthopedic surgeons with or without foot and ankle fellowship training at ambulatory surgery centers and hospitals

Introduction

Ankle fractures are commonly treated by orthopedic surgeons. Fellowship versus non-fellowship training often adds a different perspective, use of specialty-specific implants, comfort with outpatient procedures, and may contribute to cost differences between surgeons. To assess the impact of fellowship training on the value of care provided, the difference in cost of ankle fracture open reduction internal fixation procedures between foot and ankle trained orthopedic surgeons and non-foot and ankle trained orthopedic surgeons over the past 10 years was retrospectively evaluated. We additionally evaluated the cost differences of ankle fracture open reduction internal fixations between hospitals, hospital-owned ambulatory surgery centers, and physician-owned ambulatory surgery centers. The study also assessed the costs effects of inpatient versus outpatient procedures and ankle open reduction internal fixation procedure volume of the surgeon observed within the timeframe of the study.

Methods

Patient data was collected from electronic medical records and billing documents for patients who underwent an ankle open reduction internal fixation procedure performed by an orthopedic surgeon in our hospital system and local hospital-owned ambulatory surgery centers between the years 2010 and 2020. Data were also collected from a physician-owned ambulatory surgery center for patients who underwent an ankle open reduction internal fixation procedure performed by an orthopedic surgeon between the years 2015 and 2020. Statistical analyses were performed to observe potential cost differences among all variables.

Results

Procedures performed by fellowship-trained orthopedic surgeons were significantly less costly than those performed by non-foot and ankle trained orthopedic surgeons when performed at ambulatory surgery centers but not at hospitals. Procedures performed at ambulatory surgery centers were found to be significantly less costly than those performed at hospitals. In addition, it was noted that procedures performed at hospital-owned ambulatory surgery centers were less costly than physician-owned ambulatory surgery centers. It was also found that procedure cost decreased with an increase in surgeon volume.

Conclusion

An ankle fracture open reduction internal fixation performed by a foot and ankle trained orthopedic surgeon in a hospital-owned ambulatory surgery center is the lowest cost option available, and an increase in volume of open reduction internal fixations is associated with a further decrease in cost when within our hospital system between the years 2010 and 2020.

Social Disparities in Outpatient and Inpatient Management of Pediatric Supracondylar Humerus Fractures

Socioeconomic status, race, and insurance status are known factors affecting adult orthopaedic surgery care, but little is known about the influence of socioeconomic factors on pediatric orthopaedic care. The purpose of this study was to determine if demographic and socioeconomic related factors were associated with surgical management of pediatric supracondylar humerus fractures (SCHFs) in the inpatient versus outpatient setting. Pediatric patients (<13 years) who underwent surgery for SCHFs were identified in the New York Statewide Planning and Research Cooperative System database from 2009−2017. Inpatient and outpatient claims were identified by International Classification of Diseases-9-Clinical Modification (CM) and ICD-10-CM SCHF diagnosis codes. Claims were then filtered by ICD-9-CM, ICD-10-Procedural Classification System, or Current Procedural Terminology codes to isolate SCHF patients who underwent surgical intervention. Multivariable logistic regression analysis was performed to determine the effect of patient factors on the likelihood of having inpatient management versus outpatient management. A total of 7079 patients were included in the analysis with 4595 (64.9%) receiving inpatient treatment and 2484 (35.1%) receiving outpatient treatment. The logistic regression showed Hispanic (OR: 2.386, p < 0.0001), Asian (OR: 2.159, p < 0.0001) and African American (OR: 2.095, p < 0.0001) patients to have increased odds of inpatient treatment relative to White patients. Injury diagnosis on a weekend had increased odds of inpatient management (OR: 1.863, p = 0.0002). Higher social deprivation was also associated with increased odds of inpatient treatment (OR: 1.004, p < 0.0001). There are disparities among race and socioeconomic status in the surgical setting of SCHF management. Physicians and facilities should be aware of these disparities to optimize patient experience and to allow for equal access to care.

Association of Bleeding Disorders and Risk of Complications Following Open Reduction and Internal Fixation of the Ankle

BACKGROUND

Open reduction and internal fixation (ORIF) of the ankle is a common procedure performed to correct ankle fractures in many different patient populations. Diabetes, peripheral vascular disease, and osteoporosis have been identified as risk factors for postoperative complications following surgery for ankle fractures. To date, there have not been any studies evaluating postoperative outcomes in patients with bleeding disorders undergoing operative treatment for ankle fractures. The aim of this study was to determine the postoperative complication rate following ORIF of the ankle in patients with a bleeding disorder vs those without a bleeding disorder.

METHODS

From 2006 to 2018, patients undergoing operative treatment for ankle fracture were identified in the National Surgical Quality Improvement Program database. Two patient cohorts were defined: patients with a bleeding disorder and patients without a bleeding disorder. Patients who underwent either inpatient or outpatient ORIF of the ankle were included in this study. In this analysis, demographics, medical comorbidities, and postoperative complications variables were assessed between the 2 cohorts. Bivariate and multivariate analyses were performed.

RESULTS

Of 10 306 patients undergoing operative treatment for ankle fracture, 9909 patients (96.1%) had no bleeding disorder whereas 397 patients (3.9%) had a bleeding disorder. Following adjustment on multivariate analysis, compared to patients who did not have a bleeding disorder, those with a bleeding disorder had an increased risk of any postoperative complications (odds ratio [OR] 1.48, 95% confidence interval [CI] 1.05-2.08, P = .024), requirement for postoperative blood transfusion (OR 2.86, 95% CI 1.53-5.36, P = .001), and extended length of hospital stay greater than 5 days (OR 1.46, 95% CI 1.10-1.93, P = .010).

CONCLUSION

Patients with bleeding disorders are associated with increased risk of postoperative complications following ORIF for ankle fractures. Determining patient risk factors and creating optimal preoperative and perioperative management plans in patients with bleeding disorders undergoing ORIF can be beneficial in reducing postoperative complications, improving patient outcomes, and reducing overall morbidity.

LEVEL OF EVIDENCE

Level III, retrospective cohort study.

Hypoalbuminemia Predicts Adverse Events following Unicompartmental Knee Arthroplasty

Hypoalbuminemia is a potentially modifiable risk factor associated with adverse events following total knee arthroplasty. The present study aimed to evaluate whether hypoalbuminemia similarly predisposes to adverse events following unicompartmental knee arthroplasty (UKA). Patients who underwent UKA during 2006-2018 were identified through the American College of Surgeons National Surgical Quality Improvement Program. Only patients with preoperative serum albumin concentration were included. Outcomes were compared between patients with and without hypoalbuminemia (serum albumin concentration < 3.5 g/dL). All associations were adjusted for demographic, comorbidity, and laboratory differences between populations. A total of 11,342 patients were identified, of whom 6,049 (53.3%) had preoperative serum albumin laboratory values available for analysis. After adjustment for potential confounders, patients with hypoalbuminemia had a greater than 2-fold increased probability for occurrence of any complication (7.02% vs. 2.23%, p = 0.009) and a 4-fold increased probability of receiving a blood transfusion (1.81% vs. 0.25%, p = 0.045). Among procedures performed as inpatients, mean postoperative length of stay (LOS) was longer in patients with hypoalbuminemia (2.2 vs. 1.8 days; p = 0.031). Hypoalbuminemia is independently associated with complications and increased LOS following UKA and a marker for patients at higher risk of postoperative complications. Patients should be screened for hypoalbuminemia and nutritional deficiencies addressed prior to UKA.

Outpatient Surgical Fixation of Proximal Humerus Fractures Can Be Performed Without Increased Rates of Short-Term Complications or Readmissions

OBJECTIVE

To delineate differences in short-term complications between outpatient versus inpatient open reduction and internal fixation (ORIF) of proximal humerus fractures.

DESIGN

Retrospective database review.

SETTING

Hospitals participating in the American College of Surgeons National Surgical Quality Improvement Program database.

PATIENTS

Patients in the National Surgical Quality Improvement Program database with proximal humerus fractures from 2005 to 2017.

INTERVENTION

Proximal humerus fracture ORIF.

MAIN OUTCOME MEASUREMENTS

Thirty-day readmission, reoperation, thromboembolic events, and other complications.

RESULTS

In total, 920 outpatient and 2490 inpatient ORIF cases were identified. The proportion of outpatient proximal humerus fracture ORIF increased throughout the years from 6.67% in 2007 to 34.89% in 2017. Each outpatient case was propensity-score-matched with one inpatient case by age, sex, functional status, American Society of Anesthesiologists classification, smoking status, diabetes mellitus type, hypertension, chronic obstructive pulmonary disease, and dyspnea on exertion. After matching, there were 920 outpatient and 920 inpatient cases. Statistical analysis revealed no significant difference in complications including reoperation (1.63% vs. 2.50%), thromboembolic events (0.65% vs. 0.65%), and 30-day readmissions (2.93% vs. 2.69%) between outpatient versus matched inpatient procedures (all P > 0.05). The only significant finding was a lower rate of blood transfusion in outpatient procedures (0.54%) compared with inpatient procedures (4.02%) (P < 0.001).

CONCLUSIONS

The perioperative outcomes assessed here support the conclusion that ORIF for proximal humerus fractures can be performed in the outpatient setting without increased rates of 30-day perioperative complications or readmissions compared with inpatient procedures. However, it is worth noting that the majority of outpatient cases were younger than the average geriatric proximal humerus fracture patient.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

The Influence of Obesity on Hospital Admission After Outpatient Foot and Ankle Surgery

We examined the association of body mass index (BMI) with sociodemographic data, medical comorbidities and hospital admission following ambulatory foot and ankle surgery. We conducted an analysis utilizing data from the American College of Surgeons National Surgical Quality Improvement Program database from 2007 to 2016. Adult patients who underwent ankle surgery defined as ankle arthrodesis, ankle open reduction and internal fixation, and Achilles tendon repair in the outpatient setting. We examined 6 BMI ranges: <20 kg/m² underweight, ≥20 to <25 kg/m² normal weight, ≥25 to <30 kg/m² overweight, ≥30 to <40 kg/m² obese, ≥40 kg/m²to <50 kg/m² severely obese, and ≥50 kg/m² extremely obese. The primary outcome was hospital admission. We performed multivariable logistic regression and reported odds ratios (OR) and their associated 95% confidence interval (CI) and considered a p value of <.05 as statistically significant. Data extraction yielded 13,454 adult patients who underwent ambulatory ankle surgery. We then performed listwise deletion to exclude cases with missing observations. After excluding 5.4% of the data, the final study population included 12,729 patients. The overall rate of hospital admission was in the population was 18.6% (2,377/12,729). The overall rate of postoperative complications was 0.03% (4/12,729). We found no significant association of BMI with hospital admission following multivariable logistic regression. We recommend that BMI alone should not be solely used to exclude patients from having ankle surgery performed in an outpatient setting, especially since this patient group makes up a significant proportion of orthopedic surgery.

Is supplemental regional anesthesia associated with more complications and readmissions after ankle fracture surgery in the inpatient and outpatient setting?

BACKGROUND

There is concern that regional anesthesia is associated with increased risk of complications, including return to the hospital for uncontrolled pain once the regional anesthetic wears off.

METHODS

Retrospective database review of patients who underwent open reduction and internal fixation of a closed ankle fracture from 2014-16 who received general anesthesia alone (GA) or general anesthesia plus regional anesthesia (RA).

RESULTS

9459 patients met inclusion criteria. Patients in the RA group had significantly longer operative duration in both inpatient (GAI=71min vs RAI=79min, p=0.002) and outpatient setting (GAO=66min vs RAI=72min, p<0.001), lower overall LOS (GA=1.7 days vs RA=1.1 days, p<0.001), and higher readmission rate for pain (RAO=4 [0.3%] vs GAO=1 [0.0%], p=0.007).

CONCLUSIONS

Patients who received supplemental regional anesthesia had shorter hospital LOS, increased operative time, and increased readmission rates for rebound pain. However, the small number of patients needing readmission are not clinically significant demonstrating that regional anesthesia is safe, effective and readmission for rebound pain should not be a concern.

LEVEL OF EVIDENCE

III.

Spinal Anesthesia Associated With Increased Length of Stay Compared to General Anesthesia for Ankle Open Reduction Internal Fixation: A Propensity-Matched Analysis

General and spinal anesthesia are both utilized for patients undergoing open reduction internal fixation of the ankle, but there are little data comparing early complication rates. The purpose of this study was to compare duration of surgery, length of stay, and rates of postoperative adverse events within 30 days in patients undergoing open reduction internal fixation of ankle fracture using spinal versus general anesthesia. Adult patients who underwent open reduction internal fixation of a closed ankle fracture from 2012 to 2016 were retrospectively identified from American College of Surgeons National Surgical Quality Improvement Program. Duration of surgery, length of stay, 30-day adverse events, and unplanned readmissions were compared between patients who received general anesthesia and spinal anesthesia. Propensity adjustment with respect to known risk factors for complications and adjunctive regional block was used to match patients. Of the 10,795 patients included after applying the inclusion and exclusion criteria, 9862 (91.36%) received general anesthesia and 933 (8.64%) received spinal anesthesia. Using propensity-scored matching, 841 patients in the spinal cohort were matched to 3364 patients in the general cohort. Spinal anesthesia was associated with increased length of stay (+0.5 days, 95% confidence interval 0.23-0.77, p < .001). There were no differences in the rates of major/minor complications, mortality, transfusions, unplanned readmissions, or duration of surgery. General anesthesia is predominantly used for fixation of ankle fractures. While spinal anesthesia is associated with lower complication rates in hip and knee surgery, we found that it is associated with increased length of stay in patients undergoing open reduction internal fixation of the ankle within 30 days of surgery.

Outpatient lower extremity fracture surgery: should we be concerned?

PURPOSE

With rising healthcare costs and insurance push against non-emergent hospital admission, lower extremity fracture treatment is shifting toward outpatient procedures over inpatient hospitalizations. This study compares outcomes for fractures treated as inpatient versus outpatient.

METHODS

We conducted a retrospective review of lower extremity fracture patients. We collected demographics, injury information, hospital course, and complication data. Length of stay was categorized as "inpatient" and "outpatient" based a 24-h hospital stay cutoff. Data analysis included differences between cohorts with regards to readmissions and complications.

RESULTS

We identified 229 patients who met inclusion criteria. Inpatient versus outpatient status was predictive of in-hospital complications; however, inpatient versus outpatient status did not predict 1-year readmission.

CONCLUSION

Outpatient surgery is safe and effective. As the population increases and ages, low-risk surgeries should be considered for outpatient rather than inpatient stays to lower costs, save resources, and reduce complications.

Outpatient Versus Inpatient Surgical Fixation of Isolated Ankle Fractures: An Analysis of 90-Day Complications, Readmissions, and Costs

Despite increasing interest toward managing isolated ankle fractures in an outpatient setting, evidence of its safety remains largely limited. The 2007 to 2014 Humana Administrative Claims database was queried to identify patients undergoing open reduction internal fixation for unimalleolar, bimalleolar, or trimalleolar isolated closed ankle fractures. Two cohorts (outpatient versus inpatient) were then matched on the basis of age, sex, race, region, fracture type (uni-/bi-/trimalleolar) and Elixhauser Comorbidity Index to control for selection bias. Multivariate regression analyses were performed to report independent impact of outpatient-treated ankle fracture surgery on 90-day complications, readmission, and emergency department visit rates. Independent-samples t test was used to compare global 90-day costs between cohorts. A total of 5317 inpatient-treated and 6941 outpatient-treated closed ankle fractures were included in the final cohort. After matching and multivariate analyses, patients with outpatient ankle fractures, compared with patients with inpatient ankle fractures, had statistically lower rates of pneumonia (2.3% versus 4.0%; p < .001), myocardial infarction (0.9% versus 1.8%; p = .005), acute renal failure (2.2% versus 5.3%; p < .001), urinary tract infections (7.4% versus 12.3%; p < .001), and pressure ulcers (0.9% versus 2.0%; p = .001). Outpatient ankle fractures also had lower rates of 90-day readmissions (9.7% versus 14.1%; p < .001) and emergency department visits (13.8% versus 16.2%; p = .028). Last, overall 90-day costs for outpatient ankle fractures were nearly $9000 lower than costs for inpatient ankle fractures ($12,923 versus $21,866; p < .001). Based on our findings, it appears that outpatient treatment of ankle fractures can be deemed safe and feasible in a select cohort of patients.

Inpatient Arthroscopic Rotator Cuff Repair Is Associated With Higher Postoperative Complications Compared With Same-Day Discharge: A Matched Cohort Analysis

PURPOSE

To compare 90-day postoperative complications between patients undergoing outpatient versus inpatient arthroscopic rotator cuff repairs (RCR) and identify risk factors associated with postoperative complications.

METHODS

An administrative claims database was used to identify patients undergoing arthroscopic RCR from 2007 to 2015. Patients were categorized based on length of hospital stay (LOS) with inpatient RCR defined as patients with ≥1 day LOS, and outpatient RCR as patients discharged day of surgery (LOS = 0). Inpatient and outpatient RCR groups were matched based on age, sex, Charlson comorbidity index (CCI), and various medical comorbidities using 1:1 propensity score analysis. Patient factors, concomitant procedures, total adverse events (TAEs), medical adverse events (MAEs), and surgical adverse events (SAEs) were compared between the matched groups. Multiple logistic regression analysis was performed to identify risk factors associated with increased complications.

RESULTS

After matching, there were 2812 patients (50% outpatient) included in the study. Within 90 days following arthroscopic RCR, the incidence of TAEs (8.9% vs 3.6%, P < .0001), SAEs (2.7% vs 0.9%, P = .0002), and MAEs (6.4% vs 3.0%, P < .0001) were significantly greater for the inpatient RCR group. The multivariate model identified inpatient RCR (LOS ≥1 day), greater CCI, and anxiety or depression as independent predictors for TAEs after arthroscopic RCR. Open biceps tenodesis and inpatient RCR were independent predictors of SAEs, whereas greater CCI, anxiety or depression, and inpatient RCR were independent predictors for MAEs within 90 days after arthroscopic RCR.

CONCLUSIONS

Inpatient arthroscopic RCR is associated with increased risk of 90-day postoperative complications compared with outpatient. However, there is no difference for all-cause or pain-related emergency department visits within 90 days after surgery. In addition, the multivariate model identified inpatient RCR, greater CCI, and diagnosis of anxiety or depression as independent risk factors for 90-day TAEs after arthroscopic RCR.

LEVEL OF EVIDENCE

III, Retrospective cohort study.

Improving the efficiency of ankle fracture care through home care and day-surgery units: Delivering safe surgery on a value-based healthcare model

OBJECTIVES

Preoperative home care for suitable patients with ankle fractures is becoming an increasingly common practice. It allows adequate time for reduction of ankle swelling following a decision to undertake operative fixation has been made. We aim to assess the safety, efficiency, cost-effectiveness and differences in clinical & patient outcomes of day surgery unit (DSU) care for ankle fracture treatment in selected patients. Our study combined home therapy treatment with DSU care for suitable ankle fractures.

DESIGN

Prospective cohort study.

SETTING

Trauma Centre.

PATIENTS

Fifty-three patients requiring operative fixation for an ankle fracture were divided into 2 groups. Patients in group 1 entered the home care combined with DSU treatment pathway whilst in group 2 were treated as in patient in the main trauma theatre in our standard pathway.

INTERVENTION

Comparison of Home Care & Day Case Surgery vs. in patient admission for patients requiring operative ankle fractures fixation.

MAIN OUTCOME MEASURES

Prospective data collection was undertaken over a 2-year period, on fracture type, logistical outcomes including time to surgery and total length of stay in the hospital and clinical outcomes including the rate of post-operative complications, incidence of unplanned surgical revisions and objective patient satisfaction. Economic analysis was performed to compare the marginal cost saving per case for group 1 vs. group 2.

RESULTS

There were 21 patients in group 1. They waited for on average 5.8 days at home for their operation and none were admitted pre or post operatively. There were no associated complications and the majority of patients were discharged from follow-up at 6 weeks post-surgery. In-group 2, there were 32 patients. They waited on average 2.4 days for their operation in the hospital and had an average length of stay of 4.9 days. One patient in group 2 suffered from a deep vein thrombosis. The benefit from our chargeable tariff for group 1 patients was £2295 per case while the margin for group 2 patients was £277 per case. The financial benefit to the health care provider was £2018 in favour of home care and DSU treatment, with high service satisfaction and low complication rates.

DISCUSSION

This study provides focused evidence supporting the use of home care for the management of ankle fractures. The DSU pathway improves the value in healthcare delivery with high patient satisfaction scores when compared to the traditional pathway. Our model demonstrates predictably good clinical outcomes with a financial cost benefit over in-patient admission care model for selected patients.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Outpatient surgery in patients with ankle fractures minimises hospital admissions and utilisation of healthcare resources

Purpose

The recent outbreak of the novel coronavirus (SARS-CoV-2) has emphasised the need to minimise hospital admissions and utilisation of healthcare resources. The purpose of this study was to examine the outcomes of an outpatient surgery protocol for acute closed ankle fractures.

Methods

In this retrospective study, 262 patients underwent outpatient surgery for their closed ankle fractures at our level-1 trauma centre. A total of 196 patients met our inclusion criteria and were ultimately included in the final analysis. Our primary outcomes’ measures included post-operative admission to the emergency department within 30 days after surgery and unplanned hospital readmission within 30 days after surgery. Our secondary outcome measure included the incidence of surgical site infection (SSI) within 12 weeks after surgery.

Results

Thirty-two patients (16.3%) had an unplanned emergency department visit within 30 days of fracture fixation and two patients (1.0%) required hospital readmission within 30 days of their surgery. Sixteen patients (8.2%) developed SSI, which included 11 (5.6%) superficial and five (2.6%) deep infections.

Conclusion

Strategic outpatient management of acute closed ankle fractures is associated with acceptable rates of unplanned emergency department visits, hospital readmissions, and SSIs. In the context of the recent SARS-CoV-2 outbreak, outpatient management of these injuries may aide in the mitigation of nosocomial infections and the preservation of finite healthcare resources.

Inpatient admission following anterior cruciate ligament reconstruction is associated with higher postoperative complications

PURPOSE

To compare the occurrence of short-term postoperative complications between inpatient and outpatient anterior cruciate ligament reconstruction.

METHODS

The ACS National Surgical Quality Improvement Program (NSQIP) database was utilized to identify patients undergoing arthroscopic anterior cruciate ligament reconstruction (ACLR) from 2007 to 2017. A total of 18,052 patients were available for analysis following application of exclusion criteria. Patients were categorized based on location of surgery. Inpatients and outpatient ACLR groups were matched by demographics and preoperative laboratory values and differences in 30-day complication rates following surgery were assessed. Significance was set with alpha < 0.05.

RESULTS

From 2007 to 2017, there was an increasing frequency for outpatient ACLR (p < 0.001), while the incidence of inpatient ACLR remained largely constant (n.s). Groups were matched to include 1818 patients in each cohort. Within the first 30 days of surgery, patients in the inpatient ACLR group experienced significantly greater rates of superficial incisional SSI (0.6% vs 0.1%, p = 0.026) and composite surgical complications (0.6% vs 0.2%, p = 0.019), as well as a greater rate of reoperation (0.7% vs 0.2%, p = 0.029). Inpatient procedures also demonstrated a greater rate of deep surgical incisional SSI (0.2% vs 0.0%, n.s) and readmission to hospital (0.8% vs 0.7%, n.s).Outpatient ACLR procedures were also associated with a significantly greater relative value unit (RVU)/h compared with inpatient ACLRs (0.17 vs 0.14, p < 0.001).

CONCLUSIONS

Inpatient ACLR may have an increased risk of postoperative complications compared to outpatient ACLR during the short-term postoperative period. Although some patients may require admission post-operatively for medical and/or pain management, doing so is not necessarily without a degree of risk.

LEVEL OF EVIDENCE

III.

Refining Risk-Adjustment of 90-Day Costs Following Surgical Fixation of Ankle Fractures: An Analysis of Medicare Beneficiaries

As the current healthcare model transitions from fee-for-service to value-based payments, identifying cost-drivers of 90-day payments following surgical procedures will be a key factor in risk-adjusting prospective bundled payments and ensuring success of these alternative payment models. The 5% Medicare Standard Analytical Files data set for 2005-2014 was used to identify patients undergoing open reduction and internal fixation (ORIF) for isolated unimalleolar, bimalleolar, and trimalleolar ankle fractures. All acute care and post-acute care payments starting from day 0 of surgery to day 90 postoperatively were used to calculate 90-day costs. Patients with missing data were excluded. Multivariate linear regression modeling was used to derive marginal cost impact of patient-level (age, sex, and comorbidities), procedure-level (fracture type, morphology, location of surgery, concurrent ankle arthroscopy, and syndesmotic fixation), and state-level factors on 90-day costs after surgery. A total of 6499 patients were included in the study. The risk-adjusted 90-day cost for a female patient, aged 65 to 69 years, undergoing outpatient ORIF for a closed unimalleolar ankle fracture in Michigan was $6949 ± $1060. Individuals aged <65 or ≥70 years had significantly higher costs. Procedure-level factors associated with significant marginal cost increases were inpatient surgery (+$5577), trimalleolar fracture (+$1082), and syndesmotic fixation (+$2822). The top 5 comorbidities with the largest marginal cost increases were chronic kidney disease (+$8897), malnutrition (+$7908), obesity (+$5362), cerebrovascular disease/stroke (+$4159), and anemia (+$3087). Higher costs were seen in Nevada (+$6371), Massachusetts (+$4497), Oklahoma (+$4002), New Jersey (+$3802), and Maryland (+$3043) compared with Michigan. With the use of a national administrative claims database, the study identifies numerous patient-level, procedure-level, and state-level factors that significantly contribute to the cost variation seen in 90-day payments after ORIF for ankle fracture. Risk adjustment of 90-day costs will become a necessity as bundled-payment models begin to take over the current fee-for-service model in patients with fractures.

The Development of a Standardized Pathway for Outpatient Ambulatory Fracture Surgery: To Admit or Not to Admit

BACKGROUND

Increased scrutiny of health-care costs and inpatient length of stay has resulted in many orthopaedic procedures transitioning to outpatient settings. Recent studies have supported the safety and efficiency of outpatient fracture procedures. The aim of the present study was to reduce unnecessary inpatient hospitalizations for healthy patients awaiting surgical treatment of a fracture by 80% by June 30, 2017, with a focus on timely, efficient, and patient-centered care.

METHODS

The study design was a time series using statistical process control methodology. Baseline data from October 2014 to June 2016 were compared with the intervention period from July 2016 to December 2018. The Model for Improvement was used as the framework for developing and implementing interventions. The main interventions were a policy change to allow booking of outpatient urgent-room cases, education for patients and nurses, and the development of a standardized outpatient pathway.

RESULTS

One hundred and eighty-seven patients during the pre-intervention period and 308 patients during the intervention period were eligible for the ambulatory pathway. The percentage of patients managed as outpatients increased from 1.6% pre-intervention to 89.1% post-intervention. The length of stay was reduced from 2.8 to 0.2 days, a decrease of 94.0%. Patient satisfaction remained high, and there were no safety concerns while patients waited at home for the surgical procedure.

CONCLUSIONS

The outpatient fracture pathway vastly improved the efficiency and timeliness of care and reduced health-care costs. A patient-centered culture and support from hospital administration were integral in producing sustainable improvement.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Inpatient Versus Outpatient Treatment of Gartland Type II Supracondylar Humerus Fractures: A Cost and Safety Comparison

BACKGROUND

In an effort to increase health care value, there has been a recent focus on the transition of traditionally inpatient procedures to an outpatient setting. We hypothesized that in the treatment of Gartland extension type II supracondylar humerus fractures (SCHF), outpatient surgery can be performed safely and with similar clinical and radiographic outcomes compared with urgent inpatient treatment with an overall reduction in cost.

METHODS

We compared a prospective cohort of Gartland type II SCHF treated primarily as outpatients (postprotocol) to a retrospective cohort treated primarily as urgent inpatients (preprotocol), excluding patients with preoperative neurovascular injury, open fracture, additional ipsilateral upper extremity fracture, and prior ipsilateral SCHF. Inpatient versus outpatient treatment was also compared. Outcomes including perioperative factors, complications, readmission, reoperation, postoperative radiographic measurements, and direct hospital costs underwent univariate and multivariate analyses.

RESULTS

A total of 220 patients in the postprotocol cohort (88 inpatients and 132 outpatients) and 129 in the preprotocol cohort (97 inpatients and 32 outpatients) were analyzed. There were no differences in operative times, number of pins, conversion to open reductions, readmissions, or reoperations between cohorts or groups, and no cases developed postoperative neurovascular injuries or compartment syndromes. Total complications did not differ between the preprotocol and postprotocol cohorts; however, were higher in the inpatient group (3.8% vs. 0%; P=0.016) in the univariate, but not multivariate analysis. There were no differences in Baumann angle or humerocondylar angle. Significantly more inpatients' anterior humeral line fell outside of the middle third of the capitellum in the univariate, but not multivariate analysis. There were significant reductions in total cost per patient between the preprotocol and postprotocol cohorts (marginal effect, -$215; P<0.0001) and between the inpatient and outpatient groups (marginal effect, -$444; P<0.0001).

CONCLUSIONS

Delayed treatment of Gartland type II SCHF in the outpatient setting can be performed safely and with similar clinical and radiographic outcomes to those treated urgently as inpatients with a significant cost reduction.

LEVEL OF EVIDENCE

Therapeutic level III-retrospective comparative study.

Timing of Open Reduction and Internal Fixation of Ankle Fractures

Background. Unstable ankle fractures are treated with open reduction internal fixation (ORIF) to prevent posttraumatic arthritis. Typically, ORIF is performed as an ambulatory surgery several days to a few weeks after injury. It is unclear what effect this delay may have on functional outcome. This study aimed to assess the effect of timing of ankle ORIF on wound complications and functional outcome. Methods. A retrospective review of 121 patients who underwent ankle ORIF was performed. A total of 58 patients had a follow-up of at least 24 months. Time between injury and surgery greater than 14 days was defined as "delayed." Demographic variables, injury characteristics, length of surgery, and postoperative stay were documented. Comparison of demographic variables, wound complications, and functional outcome determined by Foot and Ankle Outcome Score (FAOS) was performed. Results. 118 patients were included. The duration between injury and surgery was 6 days in the "early" group and 19 days in the "delayed" group. There were no significant differences in demographic variables, injury characteristics, and length of surgery between the groups. Wound complications in the early and delayed groups were 5% and 11.8%, although this difference was not statistically significant. Among 58 patients who had a follow-up of at least 24 months, the median follow-up time was 38 (range, 24-76) months. Each subscale of FAOS demonstrated no significant difference. Conclusion. Ankle ORIF more than 14 days after injury did not significantly increase the rate of wound complication, nor did it impair ultimate functional outcome in this group. Levels of Evidence: Level III.

A Safety and Cost Analysis of Outpatient Versus Inpatient Hindfoot Fusion Surgery

Background. Hindfoot fusion procedures are increasingly being performed in the outpatient setting. However, the cost savings of these procedures compared with the risks and benefits has not been clearly investigated. The objective of this study was to compare patient characteristics, costs, and short-term complications between inpatient and outpatient procedures. Methods. This was a retrospective review of all patients who underwent inpatient and outpatient hindfoot fusion procedures by a single surgeon, at 1 academic institution, from 2013 to 2017. Data collected included demographics, operative variables, comorbidities, complications, costs, and subsequent reencounters. Results. Of 124 procedures, 34 were inpatient and 90 were outpatient. Between procedural settings, with the numbers available, there was no significant increase in complication rate or frequency of reencounters within 90 days. There were no significant differences in the number of patients with reencounters related to the index procedure within 90 days (P = .43). There were 30 reencounters within 90 days after outpatient surgery versus 4 after inpatient surgery (P = .05). The total number of emergency room visits in the outpatient group within 90 days was significantly higher compared with the inpatient group (P = .04). The average cost for outpatient procedures was US$4159 less than inpatient procedures (P < .0001). Conclusion. Outpatient hindfoot fusion may be a safe alternative to inpatient surgery, with significant overall cost savings and similar rate of short-term complications. On the basis of these findings, we believe that outpatient management is preferable for the majority of patients, but further investigation is warranted. Levels of Evidence: Level III.

Outcomes of Inpatient Versus Outpatient Elective Foot and Ankle Surgery

Background Complications following orthopedic surgeries are undesirable and costly. A potential method to reduce these costs is to perform traditionally inpatient surgical procedures in the outpatient setting. The purpose of this study is to compare outcomes between inpatient and outpatient settings for elective foot and ankle surgeries using the National Surgical Quality Improvement Program (NSQIP) database. Methods Patients with Current Procedural Terminology (CPT) codes specific to orthopedic foot and ankle surgery were identified from the 2011-2015 American College of Surgeons NSQIP database. Demographics, comorbidities, and complications were compared between patients undergoing inpatient and outpatient procedures. Results Patients receiving inpatient surgery were significantly older and more frequently male. Black patients were significantly more likely to undergo inpatient surgery than outpatient surgery while white patients were significantly more likely to undergo outpatient surgery. Outpatients had a significantly higher mean body mass index (BMI) than inpatients. Smokers were at a significantly greater risk of undergoing inpatient surgery than outpatient surgery. Outpatients had significantly longer operative times, were more likely to receive general anesthesia, had a lower American Society of Anesthesiologists (ASA) class, were more likely to be functionally independent, and were less likely to expire postoperatively. Patients who received surgery as an inpatient were significantly more likely to have comorbidities as compared to outpatients. The overall risk of surgical complications was significant between groups with 8.6% in the inpatient group and 2.0% in the outpatient group. The overall risk of medical complications was 16.9% in the inpatient group and 1.7% in the outpatient group. Similar to the surgical complications, inpatients were significantly more likely to sustain each of the individual medical complications except for stroke/CVA and venous thromboembolism. Conclusions Outpatient management is associated with decreased postoperative complications in select patients. Performing more operations in the outpatient setting in select patients may be beneficial for cost reduction and patient satisfaction.

Cost Determinants in the 90-Day Management of Isolated Ankle Fractures at a Large Urban Academic Hospital

OBJECTIVES

To determine the independent risk factors associated with increasing costs and unplanned hospital readmissions in the 90-day episode of care (EOC) for isolated operative ankle fractures at our institution.

DESIGN

Retrospective cohort study.

SETTING

Level I Trauma Center.

PATIENTS

Two hundred ninety-nine patients undergoing open reduction internal fixation for the treatment of an acute, isolated ankle fracture between 2010 and 2015.

INTERVENTION

None.

MAIN OUTCOME MEASURES

Independent risk factors for increasing 90-day EOC costs and unplanned hospital readmission rates.

RESULTS

Orthopaedic (64.9%) and podiatry (35.1%) patients were included. The mean index admission cost was $14,048.65 ± $5,797.48. Outpatient cases were significantly cheaper compared to inpatient cases ($10,164.22 ± $3,899.61 vs. $15,942.55 ± $5,630.85, respectively, P < 0.001). Unplanned readmission rates were 5.4% (16/299) and 6.7% (20/299) at 30 and 90 days, respectively, and were often (13/20, 65.0%) due to surgical site infections. Independent risk factors for unplanned hospital readmissions included treatment by the podiatry service (P = 0.024) and an American Society of Anesthesiologists score of ≥3 (P = 0.017). Risk factors for increasing total postdischarge costs included treatment by the podiatry service (P = 0.011) and male gender (P = 0.046).

CONCLUSIONS

Isolated operative ankle fractures are a prime target for EOC cost containment strategy protocols. Our institutional cost analysis study suggests that independent financial clinical risk factors in this treatment cohort includes podiatry as the treating surgical service and patients with an American Society of Anesthesiologists score ≥3, with the former also independently increasing total postdischarge costs in the 90-day EOC. Outpatient procedures were associated with about a one-third reduction in total costs compared to the inpatient subgroup.

Discrepancies in the Definition of "Outpatient" Surgeries and Their Effect on Study Outcomes Related to ACDF and Lumbar Discectomy Procedures: A Retrospective Analysis of 45,204 Cases

STUDY DESIGN

This is a retrospective study.

OBJECTIVE

To study the differences in definition of "inpatient" and "outpatient" [stated status vs. actual length of stay (LOS)], and the effect of defining populations based on the different definitions, for anterior cervical discectomy and fusion (ACDF) and lumbar discectomy procedures in the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database.

SUMMARY OF BACKGROUND DATA

There has been an overall trend toward performing ACDF and lumbar discectomy in the outpatient setting. However, with the possibility of patients who underwent outpatient surgery staying overnight or longer at the hospital under "observation" status, the distinction of "inpatient" and "outpatient" is not clear.

MATERIALS AND METHODS

Patients who underwent ACDF or lumbar discectomy in the 2005-2014 ACS-NSQIP database were identified. Outpatient procedures were defined in 1 of 2 ways: either as being termed "outpatient" or hospital LOS=0. Differences in definitions were studied. Further, to evaluate the effect of the different definitions, 30-day outcomes were compared between "inpatient" and "outpatient" and between LOS>0 and LOS=0 for ACDF patients.

RESULTS

Of the 4123 "outpatient" ACDF patients, 919 had LOS=0, whereas 3204 had LOS>0. Of the 13,210 "inpatient" ACDF patients, 337 had LOS=0, whereas 12,873 had LOS>0. Of the 15,166 "outpatient" lumbar discectomy patients, 8968 had LOS=0, whereas 6198 had LOS>0. Of the 12,705 "inpatient" lumbar discectomy patients, 814 had LOS=0, whereas 11,891 had LOS>0. On multivariate analysis of ACDF patients, when comparing "inpatient" with "outpatient" and "LOS>0" with "LOS=0" there were differences in risks for adverse outcomes based on the definition of outpatient status.

CONCLUSIONS

When evaluating the ACS-NSQIP population, ACDF and lumbar discectomy procedures recorded as "outpatient" can be misleading and often did not correlate with same day discharge. These findings have significant impact on the interpretation of existing studies and define an area that needs clarification for future studies.

LEVEL OF EVIDENCE

Level 3.

Outpatient Management of Ankle Fractures

Interest in outpatient orthopedic surgery has been fueled by provider desire to control costs and development of rapid recovery protocols. Open reduction and internal fixation (ORIF) is a commonly elected treatment strategy for ankle fracture that may be performed in an outpatient setting. Lessons on cost-savings of the outpatient model in orthopedics can be learned in total joint replacement and spine surgery. Moreover, in properly selected patients, outpatient ORIF has been shown to be comparably safe. Reasons for admission of the surgically managed patient with ankle fractures, including concern for surgical delay and additional social factors, warrant further investigation.

Economic Burden of Inpatient Admission of Ankle Fractures

BACKGROUND

Ankle fractures are among the most prevalent traumatic orthopaedic injuries. A large proportion of patients sustaining operative ankle fractures are admitted directly from the emergency department prior to operative management. In the authors' experience, however, many closed ankle injuries may be safely and effectively managed on an outpatient basis. The aim of this study was to characterize the economic impact of routine inpatient admission of ankle fractures.

METHODS

A retrospective review of all outpatient ankle fracture surgery performed by a single foot and ankle fellowship-trained surgeon at a tertiary level academic center in 2012 was conducted to identify any patients requiring postoperative inpatient admission. The National Inpatient Sample was queried for operative management of lateral malleolus, bimalleolar, and trimalleolar ankle fractures in 2012 with regard to national estimates of total volume and length of stay by age. The maximum allowable Medicare inpatient facility reimbursements for diagnosis related group 494 and Medicare outpatient facility reimbursements for Current Procedural Terminology codes 27792, 27814, and 27822 were obtained from the Medicare Acute Inpatient Prospective Pricer and the Medicare Outpatient Pricer Code, respectively. Private facility reimbursement rates were estimated at 139% of inpatient Medicare reimbursement and 280% of outpatient reimbursement, as described in the literature. Surgeon and anesthesiologist fees were considered similar between both inpatient and outpatient groups. A unique stochastic decision-tree model was derived from probabilities and associated costs and evaluated using modified Monte Carlo simulation.

RESULTS

Of 76 lateral malleolar, bimalleolar, and trimalleolar ankle fracture open reduction internal fixation cases performed in 2012 by the senior author, 9 patients required admission for polytrauma, medical comorbidities, or age. All 67 outpatients were discharged home the day of surgery. In the 2012 national cohort analyzed, 48,044 estimated inpatient admissions occurred postoperatively for closed ankle fractures. The median length of stay was 3 days for each admission and was associated with an estimated facility reimbursement ranging from $12,920 for Medicare reimbursement of lateral malleolus fractures to $18,613 for private reimbursement of trimalleolar fractures. Outpatient facility reimbursements per case were estimated at $4,125 for Medicare patients and $11,459 for private insurance patients. Nationally, annual inpatient admissions accounted for $796,033,050 in reimbursements, while outpatient surgery would have been associated with $419,327,612 for treatment of these same ankle fractures.

CONCLUSION

In the authors' experience, closed lateral malleolus, bimalleolar, and trimalleolar fractures were safely and effectively treated on an outpatient basis. Routine perioperative admission of patients sustaining ankle fractures likely results in more than $367 million of excess facility reimbursements annually in the United States. Even if a 25% necessary admission rate were assumed, routine inpatient admission of ankle fractures would result in a $282 million excess economic burden annually in the United States. Although in certain cases, inpatient admission may be necessary, with value-based decision making becoming increasingly the responsibility of the orthopaedic surgeon, understanding the implications of inpatient stays for ankle fracture surgery can ultimately result in cost savings to the US health care system and patients individually.

LEVEL OF EVIDENCE

Level III, comparative series.