Implicit and Explicit Factors That Influence Surgeons' Decision-Making for Distal Radius Fractures in Older Patients.

PURPOSE: The purpose of this study was to evaluate factors that influence surgeons' decision-making in the treatment of distal radius fractures in older patients. METHODS: Fourteen clinical vignettes of a 72-year-old patient with a distal radius fracture were sent to 185 orthopedic hand and/or trauma surgeons. The surgeons were surveyed regarding the demographic/practice details, treatment decision (surgical or nonsurgical), and factors that influenced management, including the Charlson Comorbidity Index, functional status, radiographic appearance, and handedness. Multivariable regression analyses were used to assess the effect of both surgeon-described (explicit) and given clinical (implicit) factors on the treatment decision and to evaluate for discrepancies. RESULTS: Sixty-six surgeons completed the survey, and 7 surgeons completed 10-13 vignettes. Surgeons made the explicit determination to pursue nonsurgical treatment based on the presence of comorbidities (odds ratio [OR], 0.02 for surgery; 95% confidence interval [CI], 0.01-0.05), but the observation of the underlying clinical data suggested that the recommendation for surgical treatment was instead based on a higher functional status (OR, 3.54/increase in functional status; 95% CI, 2.52-4.98). Those employed by hospitals/health systems were significantly less likely to recommend surgery than those in private practice (OR, 0.42; 95% CI, 0.23-0.79) CONCLUSIONS: This study demonstrates that the presence of comorbidities, functional status, and practice setting has a significant impact on a surgeon's decision to treat distal radius fractures in older patients. The discrepancy between the surgeon-described factors and underlying clinical data demonstrates cognitive bias. CLINICAL RELEVANCE: Surgeons should be aware of cognitive biases in clinical reasoning and should work through consequential patient decisions using an analytical framework that attempts to reconcile all available clinical data.

Fluoroscopy as Definitive Postreduction Imaging of Pediatric Wrist and Forearm Fractures Is Safe and Saves Time.

BACKGROUND: Recent studies indicate that formal postreduction radiographs may be unnecessary for closed, isolated pediatric wrist, and forearm when mini C-arm fluoroscopy is used for reduction. Our institution changed the Emergency Department (ED) management protocol to reflect this by allowing orthopaedic providers to determine if fluoroscopy was acceptable to assess fracture reduction. We hypothesized that using fluoroscopy as definitive postreduction imaging would decrease total encounter time, without an increase in the rate of rereduction or surgery. METHODS: Patients with closed, isolated distal radius/distal ulna (DR/DU) or both bone forearm (BBFA) fractures that required sedation and reduction under mini C-arm fluoroscopy at our Level 1 pediatric ED were reviewed for 6 months both before and after this policy change. Before, all patients had formal postreduction radiographs; after, the decision was left to the orthopaedic physician. Timestamp data were collected, as was the need for rereduction or surgery. In addition to descriptive statistics, between-group differences were analyzed with the Student t test, χ test, and multivariable regression as appropriate. RESULTS: A total of 243 patients (119 before, 124 after) had 165 DR/DU and 78 BBFA fractures. Demographic data were similar before and after. After protocol implementation, univariable analysis (Student t test) showed that sedation times were longer, while total ED time and the time from sedation beginning to discharge were similar. The proportion of patients requiring rereduction or surgery were similar.After multivariable regression, "fluoroscopy as definitive imaging" was the only independent determinant of the time intervals compared with using conventional radiography. Sedation was an average of 13.8 minutes longer (P<0.001), while the interval from sedation beginning to discharge was 15.8 minutes shorter (P=0.007), and total ED time was 33.0 minutes shorter (P=0.018). Fluoroscopy as definitive imaging was not a predictor of surgery (odds ratio=0.63, P=0.520), although having a BBFA increased the likelihood (odds ratio=4.50, P=0.008). CONCLUSIONS: Implementing a protocol in which the provider could use mini C-arm fluoroscopy for definitive postreduction imaging did not result in increased rates remanipulation or need for surgery. Regression analysis further demonstrated time savings associated with foregoing conventional radiographs. LEVEL OF EVIDENCE: Level III-therapeutic.

The Cost and Utility of Postreduction Radiographs After Closed Reduction of Pediatric Wrist and Forearm Fractures.

BACKGROUND: Formal radiographs are frequently obtained after reduction of closed pediatric wrist and forearm fracture performed under mini C-arm fluoroscopy. However, their utility has not been clearly demonstrated to justify the increased time, cost, and radiation exposure. We hypothesized that formal postreduction radiographs do not affect the rereduction rate of pediatric wrist and forearm fractures. We further sought to determine the time, monetary, and opportunity costs associated with obtaining these radiographs. METHODS: A total of 119 patients presented to our urban, level I pediatric trauma center from April 2015 to September 2015 with isolated, closed wrist and forearm fractures who underwent sedation and reduction using mini C-arm fluoroscopy. Demographic and injury variables were collected, along with incidence of rereduction and need for future surgery. Time intervals for sedation, awaiting x-ray, and total encounter periods were noted, and total direct and variable indirect costs for each encounter were obtained from our institution's cost accounting and billing databases. Marginal time and monetary costs were noted and further calculated as a percentage of the total encounter. Opportunity costs were calculated for the time spent obtaining the postreduction radiographs. RESULTS: Of 119 patients with isolated, closed wrist or forearm fractures, none required rereduction after initial reduction using sedation and mini C-arm fluoroscopy. Postreduction radiographs required an average of 26.2 minutes beyond the end of sedation, or 7.3% of the encounter time and cost. The direct cost of the x-ray was 2.6% of the encounter cost. With our institution's annual volume, this time could have been used to see an additional 656 patients per year. CONCLUSIONS: Postreduction formal radiographs did not result in changes in management. There are significant direct and opportunity costs for each patient who undergoes additional formal radiographs. Pediatric patients with isolated, closed wrist or forearm fractures do not routinely need formal radiographs after reduction under mini C-arm fluoroscopy. LEVEL OF EVIDENCE: Level IV-Therapeutic.

Efficacy of a radial-based thumb metacarpophalangeal-stabilizing orthosis for protecting the thumb metacarpophalangeal joint ulnar collateral ligament.

STUDY DESIGN: Basic research (biomechanics). INTRODUCTION: The high degree of motion that occurs at the thumb metacarpophalangeal (MCP) joint must be taken into account when immobilizing a partially torn or repaired thumb ulnar collateral ligament. PURPOSE OF THE STUDY: To determine the efficacy of a radial-based thumb MCP-stabilizing orthosis in resisting abduction across the thumb ulnar collateral ligament. METHODS: Ten fresh cadaveric hands were mounted to a custom board. An anteroposterior radiograph of the thumb was obtained with a 2 N preload valgus force applied to the thumb, and the angle between the Kirschner wires was measured as a baseline. Subsequently, 20, 40, 60, 80, and 100 N valgus forces were applied 15 mm distal to the MCP joint. Anteroposterior radiographs of the thumb were obtained after each force was applied. The angle of displacement between the wires was measured and compared with the baseline angle. The angles were measured with an imaging processing tool. A custom radial-based thumb MCP-stabilizing orthosis was fashioned for each cadaveric thumb by a certified hand therapist. The aforementioned loading protocol was then repeated. RESULTS: The radial-based thumb MCP-stabilizing orthosis significantly reduced mean abduction angles at each applied load. DISCUSSION: We found that our orthosis, despite being hand-based and leaving the thumb IP and CMC joints free, significantly reduced mean abduction angles at each applied load. CONCLUSIONS: This investigation provides objective evidence that our radial-based thumb MCP-stabilizing orthosis effectively reduces the degree of abduction that occurs at the thumb MCP joint up to at least 100 N. LEVEL OF EVIDENCE: n/a (cadaveric).

The Affordable Care Act Decreased the Proportion of Uninsured Patients in a Safety Net Orthopaedic Clinic.

BACKGROUND: The Patient Protection and Affordable Care Act (ACA) was approved in 2010, substantially altering the economics of providing and receiving healthcare services in the United States. One of the primary goals of this legislation was to expand insurance coverage for under- and uninsured residents. Our objective was to examine the effect of the ACA on the insurance status of patients at a safety net clinic. Our institution houses a safety net clinic that provides the dominant majority of orthopaedic care for uninsured patients in our state. Therefore, our study allows us to accurately examine the magnitude of the effect on insurance status in safety net orthopaedic clinics. QUESTIONS/PURPOSES: (1) Did the ACA result in a decrease in the number of uninsured patients at a safety net orthopaedic clinic that provides the dominant majority of orthopaedic care for the uninsured in the state? (2) Did the proportion of patients insured after passage of the ACA differ across age or demographic groups in one state? METHODS: We retrospectively examined our longitudinally maintained adult orthopaedic surgery clinic database from January 2009 to March 2015 and collected visit and demographic data, including zip code income quartile. Based on the data published by the Rhode Island Department of Health, our clinic provides the dominant majority of orthopaedic care for uninsured patients in our state. Therefore, examination of the changes in the proportion of insurance status in our clinic allows us to assess the effect of the ACA on the state level. Univariate and multivariable logistic regression analyses were used to determine the relationship between demographic variables and insurance status. Adjusted odds ratios and 95% CIs were calculated for the proportion of uninsured visits. The proportion of uninsured visits before and after implementation of the ACA was evaluated with an interrupted time-series analysis. The reduction in the proportion of patients without insurance between demographic groups (ie, race, gender, language spoken, and income level) also was compared using an interrupted time-series design. RESULTS: There was a 36% absolute reduction (95% CI, 35%-38%; p < 0.001) in uninsured visits (73% relative reduction; 95% CI, 71%-75%; p < 0.001). There was an immediate 28% absolute reduction (95% CI, 21%-34%; p < 0.001) at the time of ACA implementation, which continued to decline thereafter. After controlling for potential confounding variables such as gender, race, age, and income level, we found that patients who were white, men, younger than 65 years, and seen after January 2014 were more likely to have insurance than patients of other races, women, older patients, and patients treated before January 2014. CONCLUSIONS: After the ACA was implemented, the proportion of patients with health insurance at our safety net adult orthopaedic surgery clinic increased substantially. The reduction in uninsured patients was not equal across genders, races, ages, and incomes. Future studies may benefit from identifying barriers to insurance acquisition in these subpopulations. The results of this study could affect orthopaedic practices in the United States by guiding policy decisions regarding health care. LEVEL OF EVIDENCE: Level III, therapeutic study.

Thirty-Day Reoperation and/or Admission After Elective Hand Surgery in Adults: A 10-Year Review.

PURPOSE: Whereas acute complications following elective hand surgery have been assumed to be rare, the incidence of 30-day unplanned reoperation and/or admission for the most common elective procedures has not been well described. Our goal was to calculate the incidence and identify the risk factors associated with these complications in a busy academic practice. METHODS: Our institution's quality assurance database was examined retrospectively for unplanned reoperations and/or admissions within 30 days in adults undergoing elective procedures with 2 senior attending surgeons from February 2006 to January 2016. Each event was categorized by causative factor and charts were reviewed to establish risk factors and cultured organisms. Our billing database was examined for the concomitant procedural volume. RESULTS: In our cohort of 18,081 surgeries (57.6% carpal tunnel or trigger digit releases), 27 patients had an unplanned reoperation and/or admission within 30 days (0.15% total incidence; including carpal tunnel release, 0.10%; trigger digit release, 0.09%; major wrist surgery, 0.74%) including 17 infections (0.09%). These were unevenly distributed over time after surgery with 29.6% occurring within 7 days, 59.2% in 8 to 14 days, 11.1% in 15 to 21 days, and none between 22 and 30 days. CONCLUSIONS: Reoperations and/or unplanned admission within 30 days after elective hand surgery are infrequent (15 per 10,000 cases) and are most commonly related to infections (63.0%). More invasive surgeries are associated with a higher incidence than simpler procedures, and these complications are most likely to occur within 3 weeks after surgery. These data in elective patients do not cover certain clinically relevant outcomes, such as chronic pain or limited function, and may not be generalizable to all practices. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Incidence, Timing, and Risk Factors for Secondary Revision After Primary Revision of Traumatic Digit Amputations.

PURPOSE: Primary revision amputation is the most common treatment method for traumatic digit amputations in the United States. Few studies have reported secondary revision rates after primary revision amputation. The primary aim of our study was to identify risk factors for secondary revision within 1 year of the index procedure. Secondarily, we describe the incidence and timing of complications requiring secondary revision. METHODS: Our institution's emergency department (ED) database was reviewed for traumatic digit amputations over a 6-year period. Patients were reviewed for demographic characteristics, comorbidities, site of treatment (ED versus operating room), and complications requiring secondary revision. Conditional Cox Proportional Hazard regression was used to model hazard of revision within 1 year of index procedure relative to site of initial management, mechanism of injury, injury characteristics, and patient demographics. RESULTS: Five hundred and thirty-seven patients with 677 digits were managed with primary revision amputation. Five hundred and eighty-six digits (86.6%) were revised in the ED, and 91 (13.4%) in the operating room. Ninety-one digits required secondary revision, including 83 within 1 year. No increased risk of secondary revision amputation within 1 year of the index procedure was observed for patients treated in the ED compared with the operating room. Relative to crush injuries, bite and sharp laceration amputations had 4.8 times and 2.6 times increased risk of secondary revision, respectively. The index finger had a 5.3-fold increased risk of revision with the thumb as the reference digit. Work-related injuries had a 1.9-fold increased risk of secondary revision compared with non-work-related injuries. CONCLUSIONS: No evidence was found indicating that traumatic digit amputations primarily revised in the ED had an increased risk of secondary revision. Patients may be counseled on the risk of secondary procedures based on the mechanism of injury, injury characteristics and demographics, as well as the timing of complications. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Crush Injuries of the Hand.

Crush injuries of the hand are a rare but devastating phenomenon, with historically poor outcomes. A compressive force, usually caused by a high-energy mechanism such as a motor vehicle or industrial accident, crushes and transiently increases the pressures within the hand. This force acts on the incompressible blood in the vasculature and leads to a dramatic rise in tissue pressures and damage to multiple tissue types, including bones, blood vessels, nerves, and soft tissues. A wide zone of injury results from a delayed inflammatory reaction involving the zone bordering the crushed cells, which may initially belie the severity of the injury. As such, these injuries go on to produce tremendous inflammation and swelling, potentially followed by compartment syndrome or other vascular damage, infection, neurological injury, and tissue necrosis. Crush injuries with minimal skin disruptions can be particularly challenging to accurately diagnose and manage. This paper provides a review of the initial evaluation of hand crush injuries as well as short- and long-term management strategies.

Effect of Hospital Characteristics on Performance of Pediatric Digit Replantation in the United States.

Introduction Utilize a national pediatric database to assess whether hospital characteristics such as location, teaching status, ownership, or size impact the performance of pediatric digit replantation following traumatic digit amputation in the United States. Materials and Methods The Kid's Inpatient Database (KID) was used to query pediatric traumatic digit amputations between 2000 and 2012. Ownership (private and public), teaching status (teaching and non-teaching), location (urban and rural), hospital type (general and children's), and size (large and small-medium) characteristics were evaluated. Replantations were then divided into those that required subsequent revision replantation or amputation. Fisher's exact tests and multivariable logistic regressions were performed with p <0.05 considered statistically significant. Results Overall, 1,015 pediatric patients were included for the digit replantation cohort. Hospitals that were privately owned, general, large, urban, or teaching had a significantly greater number of replantations than small-medium, rural, non-teaching, public, or children's hospitals. Privately owned (odds ratio [OR]: 1.80; 95% confidence interval [CI]: 1.06-3.06; p = 0.03) and urban (OR: 2.29; 95% CI: 1.41-3.73; p = 0.005) hospitals were significantly more likely to perform replantation. Urban (OR: 4.02; 95% CI: 1.90-8.47; p = 0.0003) and teaching (OR: 2.11; 95% CI: 1.17-3.83; p = 0.014) hospitals were significantly more likely to perform a revision procedure following primary replantation. Conclusion Private and urban hospitals were significantly more likely to perform replantation, but urban and teaching hospitals carried a greater number of revision procedures following replantation. Despite risk of requiring revision, the treatment of pediatric digit amputations in private, urban, and teaching centers provide the greatest likelihood for an attempt at replantation in the pediatric population. The study shows Level of Evidence III.

Charges for Distal Radius Fracture Fixation Are Affected by Fracture Pattern, Location of Service, and Anesthesia Type.

BACKGROUND: This study sought to characterize charges associated with operative treatment of distal radius fractures and identify sources of variation contributing to overall cost. METHODS: A retrospective study was performed using the New York Statewide Planning and Research Cooperative System database from 2009-2017. Outpatient claims were identified using the International Classification of Diseases-9/10-Clinical Modification diagnosis codes for distal radius fixation surgery. A multivariable mixed model regression was performed to identify variables contributing to total charges of the claim, including patient demographics, anesthesia method, surgery location (ambulatory surgery center [ASC] versus a hospital outpatient department [HOPD], operation time, insurance type, Charlson Comorbidity Index, and billed procedure codes. RESULTS: A total of 9029 claims were included, finding older age, private primary insurance, surgery performed in a HOPD, and use of local anesthesia (vs general or regional) associated with increased total charges. There was no difference between gender, race, or ethnicity. Additionally, open reduction and internal fixation (ORIF), increased operative time/fracture complexity, and use of perioperative medications contributed significantly to overall costs. CONCLUSIONS: Charges for distal radius fracture surgery performed in a HOPD were 28.3% higher than compared to an ASC, and cases with local anesthesia had higher billed claims compared to regional or general anesthesia. Furthermore, charges for percutaneous fixation were 54.6% lower than ORIF of extraarticular fracture, and claims had substantial geographic variation. These findings may be used by providers and payers to help improve value of distal radius fracture care. LEVEL OF EVIDENCE: Level III.

Unanticipated Admission Following Outpatient Ligament Reconstruction and Tendon Interposition: An Analysis of 3966 Cases.

Background: Hand surgeons in the United States commonly perform ligament reconstruction and tendon interposition (LRTI) to address debilitating thumb carpometacarpal arthritis. The objective of this investigation was to examine the characteristics that place patients at risk for unanticipated inpatient admission after a planned outpatient LRTI. Methods: The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) datasets from years 2009 to 2016 were used to identify patients with a primary Current Procedural Terminology code for LRTI (25445, 25447). Only outpatient, nonemergent, and elective procedures were considered. Univariable and multivariable regression were used to determine risk factors and postoperative complications associated with increased likelihood of unanticipated admission, defined as length of initial hospital stay greater than 0 days. Statistical significance was set at P < .05. Results: Of 3966 patients who underwent outpatient LRTI, 134 (3.4%) had unplanned admission. On multivariable regression, age ≥ 65 years (odds ratio [OR] = 1.50), white race (OR = 4.44), and chronic steroid use (OR = 2.42) were significant predictors of unplanned admission. History of smoking, obesity, hypertension, diabetes, American Society of Anesthesiologists classification, and anesthesia method were not associated with admission. Patients who had unplanned admission had increased rate of reoperation (2.5% vs 0.3%) compared with nonadmitted patients. There was no difference in rate of postoperative infection, deep vein thrombosis, wound dehiscence, or 30-day mortality. Conclusions: Age ≥ 65 years, chronic steroid use, and white race were significant predictors of unplanned admission following LRTI. Identifying patients with these characteristics will be critical in risk adjusting the anticipated cost of the episode of care in outpatient LRTI.

Implant Charge Differences Between Distal Radius Fixation Constructs (CPT 25607, 25608, and 25609).

BACKGROUND: Implants are a significant contributor to health care costs. We hypothesized that extra-articular fracture patterns would have a lower implant charge than intra-articular fractures and aimed to determine risk factors for increased cost. METHODS: In total, 163 patients undergoing outpatient distal radius fracture fixation at 2 hospitals were retrospectively reviewed stratified by Current Procedural Terminology codes. Implants and associated charges were noted, as were sex, age, insurance status, surgeon specialty, and location. Bivariate and multivariable regression were used to determine associations. RESULTS: Total implant charges were significantly lower for 25607 (extraarticular, $3,348) than 25608 (2-part intraarticular, $3,859) and 25609 (3+ part intraarticular, $3,991). In addition, intra-articular fractures had higher charges for distal screws/pegs and bone graft. Charge was lower when surgery was performed at a trauma center. There was no charge difference associated with insurance status, age, sex, hand surgery specialty, or fellow status. Substantial intersurgeon variation existed in all fracture types. CONCLUSION: Distal radius fractures may represent a good model for examining implant costs. Extra-articular fractures had lower implant charges than intra-articular fractures. These data may be used to help construct pricing for distal radius fracture bundles and potential cost savings.

Four-Corner Arthrodesis versus Proximal Row Carpectomy: Risk Factors and Complications Associated with Prolonged Postoperative Opioid Use.

Introduction This article compares opioid use patterns following four-corner arthrodesis (FCA) and proximal row carpectomy (PRC) and identifies risk factors and complications associated with prolonged opioid consumption. Materials and Methods The PearlDiver Research Program was used to identify patients undergoing primary FCA (Current Procedural Terminology [CPT] codes 25820, 25825) or PRC (CPT 25215) from 2007 to 2017. Patient demographics, comorbidities, perioperative opioid use, and postoperative complications were assessed. Opioids were identified through generic drug codes while complications were defined by International Classification of Diseases, Ninth and Tenth Revisions, Clinical Modification codes. Multivariable logistic regressions were performed with p < 0.05 considered statistically significant. Results A total of 888 patients underwent FCA and 835 underwent PRC. Three months postoperatively, more FCA patients (18.0%) continued to use opioids than PRC patients (14.7%) ( p = 0.033). Preoperative opioid use was the strongest risk factor for prolonged opioid use for both FCA (odds ratio [OR]: 4.91; p < 0.001) and PRC (OR: 6.33; p < 0.001). Prolonged opioid use was associated with an increased risk of implant complications (OR: 4.96; p < 0.001) and conversion to total wrist arthrodesis (OR: 3.55; p < 0.001) following FCA. Conclusion Prolonged postoperative opioid use is more frequent in patients undergoing FCA than PRC. Understanding the prevalence, risk factors, and complications associated with prolonged postoperative opioid use after these procedures may help physicians counsel patients and implement opioid minimization strategies preoperatively.

A Simple Initiative to Decrease Time to Antibiotic Prophylaxis for Open Fractures Is Durable After 2 Years.

INTRODUCTION: A simple antibiotic prophylaxis initiative can effectively decrease the time to antibiotic administration for patients with open fractures. We aim to determine whether adherence to the protocol decreased over time without active input from the orthopaedic trauma team. PATIENTS AND METHODS: This retrospective cohort study included adult patients with open fractures (excluding hand) presenting directly to the emergency department at one Level I trauma center. Three separate 50-patient groups were included: a preimplementation cohort, immediately postimplementation cohort, and a retention cohort 2 years later. The primary outcome was time from emergency department presentation to antibiotic administration, and secondary outcomes were the percentage of patients receiving antibiotics within 60 minutes and incidence of infection requiring revision surgery within 90 days. The χ2 and Student t-tests evaluated between-group differences, and multivariable linear or logistic regression evaluated risk factors. RESULTS: After implementation, the time from presentation to antibiotic administration decreased markedly from 123.1 to 35.7 minutes and remained durable (50.0 minutes) at retention. The proportion of patients receiving antibiotics within 60 minutes increased markedly from 46% preimplementation to 82% postintervention and remained similar at retention (80%). The postintervention and retention groups were markedly more likely to receive antibiotics within 60 minutes than the preintervention group (odds ratio [OR], 8.4 and 4.7, respectively), as were patients with a higher Gustilo-Anderson type (OR, 2.4/unit increase), lower extremity injury (OR, 2.8), and male sex (OR, 3.1); mechanism, age, and Injury Severity Score were not associated. No difference was observed in infection. CONCLUSIONS: Our educational initiative showed durable results in reducing the time from presentation to antibiotic administration after 2 years. LEVEL OF EVIDENCE: Therapeutic Level III.

Seasonal Trends in Traumatic Digit Amputations: Experience of a Level І and a Level ІІ Hospital in a Northeastern State.

Background: Traumatic digit amputations are common hand injuries in the United States. The primary aim of our study was to describe the relationship between season and mechanisms of amputation. Methods: The Emergency Department and Orthopaedic Surgery Billing Department databases of our level І institution in the Northeast were reviewed to identify patients with a traumatic digit amputation between January 2010 and December 2015. Inclusion criteria were defined as any patient presenting with a partial or complete amputation through Verdan zone I or II. All patient information was entered into a secure database, including date of injury, demographic information, digits amputated, mechanism of injury (crush, laceration, avulsion, bite, blast, saw, snow blower, or lawn mower), and Verdan zones of amputation. In addition to descriptive statistics, Fisher exact and χ2 tests were used to compare the incidence of these traumatic digit amputation mechanisms between seasons. Results: For this 6-year period, an average of 24 patients presented each season for treatment of a traumatic digit amputation. Of all seasons, spring had the highest proportion of lawn mower amputations (62.5%; P < .0001), summer had the highest proportion of blast amputations (75.0%; P = .011), and winter had the highest proportion of snow blower amputations (90.9%; P < .0001). All other traumatic digit amputation mechanisms had no significant seasonal variation in incidence (P > .30). Conclusions: Given that certain traumatic digit amputation mechanisms occur predictably during certain seasons, seasonal public education has the potential to prevent these debilitating injuries.

Pediatric Digit Replantation Following Traumatic Amputation: Nationwide Analysis of Patient Selection, Outcomes, and Cost.

Background: Indications for replantation following traumatic digit amputations are more liberal in the pediatric population than in adults, but delineation of patient selection within pediatrics and their outcomes have yet to be elucidated. This study uses a national pediatric database to evaluate patient characteristics and injury patterns involved in replantation and their outcomes. Methods: The Healthcare Cost and Utilization Project Kid's Inpatient Database was queried for traumatic amputations of the thumb and finger from 2000 to 2012. Participants were separated into those who underwent replantation and those who underwent amputation. Patients undergoing replantation were further divided into those requiring revision amputation and/or microvascular revision. Patient age, sex, insurance, digit(s) affected, charges, length of stay, and complications were extracted for each patient. Results: Traumatic digit amputations occurred in 3090 patients, with 1950 (63.1%) undergoing revision amputation and 1140 (36.9%) undergoing replantation. Younger patients, those with thumb injuries, females, and those covered under private insurance were significantly more likely to undergo replantation. Cost, length of stay, and in-hospital complications were significantly greater in replantation patients than in those who had undergone amputation. Following replantation, 237 patients (20.8%) underwent revision amputation and 209 (18.3%) underwent vascular revision, after which 58 required revision amputation. Risk of revision following replantation involved older patients, males, and procedures done recently. Conclusions: Pediatric patients who underwent replantation were significantly younger, female, had thumb injuries, and were covered by private insurance. Our findings demonstrate that in addition to injury factors, demographics play a significant role in the decision for finger replantation and its outcomes.

Mortality and Morbidity of Surgical Management of Geriatric Ankle Fractures.

INTRODUCTION: The incidence of geriatric ankle fractures is rising. With the substantial variation in the physiologic and functional status within this age group, our null hypothesis was that mortality and complications of open reduction and internal fixation (ORIF) between patients who are aged 65 to 79 are equivalent to ORIF in patients who are aged 80 to 89. METHODS: Patients with ankle fracture were identified using the International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis codes. Patients treated with ORIF were identified using the Current Procedural Terminology codes. Patients were divided into two age cohorts: 65 to 79 years of age and 80 to 89 years of age. The primary outcome studied was 30-day mortality. Secondary outcomes included 30-day readmission, revision surgery, surgical site infection, sepsis, wound dehiscence, pulmonary embolism, deep vein thrombosis, blood transfusion, urinary tract infection, pneumonia, stroke, myocardial infarction, renal insufficiency or failure, and length of hospital stay. RESULTS: Our cohort included 2,353 ankle fractures: 1,877 were among 65 to 79 years of age and 476 were among 80 or older. Thirty-day mortality was 3.2-fold higher in the 80 to 89 years of age group compared with the 65 to 79 years of age group (1.47% versus 0.48%, P = 0.019). However, after controlling for the ASA class, 80 to 89 years of age patients no longer had a significantly higher mortality (P = 0.0647). Similarly, revision surgery rate (3.36% versus 1.81%, P = 0.036), transfusion requirement (2.94% versus 1.49%, P = 0.033), urinary tract infection (1.89% versus 0.75%, P = 0.023), and hospital length of stay (4.9 versus 2.9 days, P < 0.0001) were all significantly higher in the 80 to 90 years of age group compared with the 65 to 79 years old group. However, after controlling for the ASA class, 80 to 89 years old patients no longer had a rate of complications in comparison to the 65 to 79 years old age group. DISCUSSION: After controlling for comorbidities (ie, the ASA class), no increased risk is observed for the 30-day mortality or complication rate between geriatric ankle fracture in the 65 to 79 years old and the 80 to 99 years old age groups. LEVEL OF EVIDENCE: Prognostic level III, retrospective study.

Cost-Effectiveness of Initial Revision Digit Amputation Performed in the Emergency Department Versus the Operating Room.

Background: The objective of this study was to determine the comparative cost-effectiveness of performing initial revision finger amputation in the emergency department (ED) versus in the operating room (OR) accounting for need for unplanned secondary revision in the OR. Methods: We retrospectively examined patients presenting to the ED with traumatic finger and thumb amputations from January 2010 to December 2015. Only those treated with primarily revision amputation were included. Following initial management, the need for unplanned reoperation was assessed and associated with setting of initial management. A sensitivity analysis was used to determine the cost-effectiveness threshold for initial management in the ED versus the OR. Results: Five hundred thirty-seven patients had 677 fingertip amputations, of whom 91 digits were initially primarily revised in the OR, and 586 digits were primarily revised in the ED. Following initial revision, 91 digits required unplanned secondary revision. The unplanned secondary revision rates were similar between settings: 13.7% digits from the ED and 12.1% of digits from the OR (P = .57). When accounting for direct costs, an incidence of unplanned revision above 77.0% after initial revision fingertip amputation in the ED would make initial revision fingertip amputation in the OR cost-effective. Therefore, based on the unplanned secondary revision rate, initial management in the ED is more cost-effective than in the OR. Conclusions: There is no significant difference in the incidence of unplanned/secondary revision of fingertip amputation rate after the initial procedure was performed in the ED versus the OR.

A Novel Machine Learning Model Developed to Assist in Patient Selection for Outpatient Total Shoulder Arthroplasty.

INTRODUCTION: Patient selection for outpatient total shoulder arthroplasty (TSA) is important to optimizing patient outcomes. This study aims to develop a machine learning tool that may aid in patient selection for outpatient total should arthroplasty based on medical comorbidities and demographic factors. METHODS: Patients undergoing elective TSA from 2011 to 2016 in the American College of Surgeons National Surgical Quality Improvement Program were queried. A random forest machine learning model was used to predict which patients had a length of stay of 1 day or less (short stay). A multivariable logistic regression was then used to identify which variables were significantly correlated with a short or long stay. RESULTS: From 2011 to 2016, 4,500 patients were identified as having undergone elective TSA and having the necessary predictive features and outcomes recorded. The machine learning model was able to successfully identify short stay patients, producing an area under the receiver operator curve of 0.77. The multivariate logistic regression identified numerous variables associated with a short stay including age less than 70 years and male sex as well as variables associated with a longer stay including diabetes, chronic obstructive pulmonary disease, and American Society of Anesthesiologists class greater than 2. CONCLUSIONS: Machine learning may be used to predict which patients are suitable candidates for short stay or outpatient TSA based on their medical comorbidities and demographic profile.