Damage control orthopaedics in polytraumatized patients- current concepts

Time-related predictors for adverse events in polytrauma patients undergoing stand-alone definitive surgery

Background

Timely triage is crucial for polytrauma patients. Those with lower injury severity and physiological stress typically undergo isolated definitive surgery, but predictors for adverse events (AEs) in this group remain unclear. This study aims to identify time-related predictors of AEs in polytrauma patients undergoing stand-alone definitive surgery, excluding damage control interventions.

Methods

We analyzed a trauma database spanning from 1996 to 2022, including 3653 patients. The focus was on individuals aged ≥16 years with an Injury Severity Score (ISS) ≥16 who underwent definitive orthopedic surgery. Injury and physiological parameters were recorded at admission and on the first and second days post-admission. Documented AEs included systemic inflammatory response syndrome (SIRS), sepsis, and mortality.

Results

Among the 276 patients (mean age: 45.0 years with confidence interval, CI, 42.7-47.2 years; 71.7 % male; median ISS: 27 with interquartile range: 20-34), the incidence of SIRS was 79 % (n = 218), sepsis 13.8 % (n = 38), and mortality 4 % (n = 11). Upon admission, severe head and facial injuries and elevated leucocyte count (LC) predicted SIRS. Predictors for sepsis included ISS, heart rate, pH, and prothrombin time (PT), while non-survivors were older, with more severe head injuries and lower base excess (BE). On day one, elevated lactate levels were noted in both septic patients and non-survivors; LC predicted sepsis. By day two, higher lactate persisted in both groups, with non-survivors also showing reduced BE and PT. Primary (admission day) and multiple surgeries correlated with SIRS, whereas delayed surgeries were associated with sepsis. No surgical factors were correlated with mortality.

Conclusion

Injury severity, physiological and surgical factors are associated with AEs in polytrauma patients undergoing definitive surgery. These findings with re-evaluation may help guide decision-making to minimize the risk of AEs.

Level of evidence

Cohort-study, Level of Evidence = III.

Trial registration

No. StV: 1-2008.

Initial management of patients with burns and combined injuries for acute care surgeons: What you need to know

ABSTRACT

There are nearly 700,000 adults and children with burn injuries who seek care in America each year. While most patients with major burn injuries are cared for at American Burn Association-verified burn centers, many of them present to nonburn centers initially or present with combined burns and other injuries. Despite this, burn surgery is no longer mandated by the Accreditation Council for Graduate Medical Education for general surgery residency and is rarely a meaningful component of surgical critical care fellowships. However, general surgeons are called to participate in and, occasionally, lead the care of adults and children with burn injuries when burn expertise is not available, for patients with combined burns and other injuries, when procedures are required, in intensive care units, and/or during multiple casualty incidents and disasters. Fundamental burn care knowledge and skills deployed during these moments can radically impact patients' chances of survival and future quality of life. This clinical review covers burn-specific aspects of the primary survey and follows the ABCDE approach. Additional details about core burn care principles (e.g., inhalation injury, resuscitation, wound care) and special considerations in combined burns and other injuries are also presented (e.g., burns with concomitant abdominal, thoracic, skeletal, and/or intracranial injury(ies)).

LEVEL OF EVIDENCE

Expert Opinion; Level V.

Damage control orthopedics versus early total care of femur fracture in a national cohort of pediatric patients with traumatic brain injury

BACKGROUND

Long bone fracture is one of the most common concomitant injuries in pediatric traumatic brain injury (TBI) patients, requiring surgical intervention in the form of intramedullary nailing (IMN), open reduction and internal fixation (ORIF), or temporary external fixation, otherwise known as damage control orthopedics (DCO), for transient stabilization before definitive repair. There are no definitive guidelines for femur fracture management in polytrauma TBI pediatric patients. This study investigates the outcomes of patients with TBI and femur fractures who underwent DCO versus early total care (ETC), hypothesizing that delayed fracture fixation is associated with worse outcomes.

METHODS

Pediatric patients admitted with TBI who underwent femur fracture repair between 2016 and 2020 were investigated using the National Inpatient Sample database. Clinical outcomes, healthcare utilization data, baseline demographics, and comorbidities were collected. All Patient Refined Diagnosis Related Groups (APR-DRG) severity was defined for each case. The injury severity scale (ISS) was developed using ICD-10-CM codes for injury. High ISS was defined as greater than 75th percentile. DCO patients were compared with ETC patients. Inpatient death, prolonged LOS, and high total charges were the primary outcomes evaluated. Multivariate binary logistic regression analysis was used to evaluate for independent predictors of primary outcomes.

RESULTS

A total of 6,775 pediatric TBI patients under the age of 21 who underwent repair of femur fracture were identified. The average age was 15.5 years (range: 0-21 years) and there were 2,065 (30.5 %) females. DCO to treat femur fractures was employed in 1,010 (14.9 % of patients). Patients undergoing DCO were significantly more likely to have extreme illness severity (OR = 3.049), early trauma complications (OR = 2.273), and respiratory complications (OR = 2.255). DCO was independently associated with prolonged length of stay (LOS) (OR = 1.263), high total charges (OR = 1.786), and inpatient death (OR = 2.796).

CONCLUSION

This study found that DCO is associated with worse outcomes, likely secondary to injury severity and underlying neurologic injury of patients undergoing DCO. These findings suggest it is time to definitively outline the timing and modality of femur fracture repair for the polytrauma pediatric patient with TBI.

LEVEL OF EVIDENCE

III.

Advances in Managing Pelvic Fractures in Polytrauma: A Comprehensive Review

Background: Pelvic fractures are among the most complex and life-threatening injuries encountered in trauma and orthopedic surgery, often resulting from high-energy trauma and leading to severe complications. This review synthesizes recent advancements in pelvic trauma care, with a focus on comparing damage control orthopedics (DCO) and early total care (ETC) strategies, operative versus nonoperative management, and outcomes of minimally invasive versus traditional ORIF techniques. Results: Our comparative analysis highlights that DCO remains the preferred approach for hemodynamically unstable patients, prioritizing rapid stabilization and reducing mortality from hemorrhage. In contrast, ETC has demonstrated superior functional recovery outcomes in stable polytrauma patients, with a 30-40% reduction in pulmonary complications and shorter ICU stays when performed within 24-48 h post-injury. Additionally, percutaneous fixation reduces soft tissue trauma and infection risk but increases the likelihood of malunion, while ORIF provides superior anatomical restoration with a higher risk of postoperative infections. Hybrid approaches, integrating percutaneous techniques with limited open reduction, show promise in minimizing operative time and complications while achieving stable fixation. Conclusions: These findings reinforce the importance of tailoring surgical strategies to patient physiology and injury patterns. DCO and ETC have distinct but complementary roles, and emerging hybrid techniques offer a middle ground that balances stability with reduced morbidity. A precision medicine approach, integrating AI-driven predictive modeling and real-world clinical data, is essential for optimizing outcomes and developing evidence-based treatment protocols. Large-scale, multicenter trials are needed to validate these approaches and establish standardized guidelines for pelvic fracture management.

Early total care and damage control orthopaedics result in partially contrasting patterns of microRNA expression at the fracture site and in the systemic circulation : an animal study

Aims

The aims of this study, using a porcine model of multiple trauma, were to investigate the expression of microRNAs at the fracture site, in the fracture haematoma (fxH) and in the fractured bone, compared with a remote unfractured long bone, to characterize the patterns of expression of circulating microRNAs in plasma, and identify and validate messenger RNA (mRNA) targets of the microRNAs.

Methods

Two multiple trauma treatment strategies were compared: early total care (ETC) and damage control orthopaedics (DCO). For this study, fxH, fractured bone, unfractured control bone, plasma, lung, and liver samples were harvested. MicroRNAs were analyzed using quantitative real-time polymerase chain reaction arrays, and the identified mRNA targets were validated in vivo in the bone, fxH, lung, and liver tissue.

Results

MicroRNA expression was associated with the trauma treatment strategy and differed depending on the type of sample. In the ETC group, a more advanced fracture healing response, as reflected by the expression of osteogenic microRNAs, was seen compared with the DCO group. DCO treatment resulted in a more balanced immune response in the systemic circulation as represented by significant upregulations of several anti-inflammatory microRNAs. The in vivo validation of the abundance of putative mRNA targets reflected the levels of microRNAs which were identified.

Conclusion

Local and systemic microRNA patterns of expression were identified, specific for the treatment strategy in multiple trauma, which corresponded with the expression of mRNA at the fracture site and in target organs. These findings match clinical observations and offer insights into the cellular communication which may underlie the effects of using different surgical strategies in patients with multiple trauma, both locally and systemically. We also identified a systemic involvement of microRNAs in multiple trauma which may include distant cellular communication between injured tissues. Further research may further describe the temporospatial role of circulating microRNAs after multiple trauma, their potential role in communication between organs, and prospective therapeutic applications.

Single-stage intramedullary nailing for patients with multiple concurrent long-bone fractures in a low-resource setting: what factors contribute to prolonged operative duration?

PURPOSE

To investigate the factors that prolonged the operative duration (OD) in patients who underwent single-stage locked intramedullary nailing of their multiple concurrent long-bone fractures (LBFs) using Surgical Implant Generation Network (SIGN) nails.

METHODS

Forty-nine patients who fulfilled the inclusion criteria were enrolled prospectively over 8½ years. Data collected included age, sex, injury mechanism and severity, fracture characteristics, nail types and diameter, OD, fracture-to-fixation time, length of hospital stay (LOS), functional outcomes and complications. Factors associated with prolonged OD were identified using Pearson's chi-square test.

RESULTS

The mean age was 40.6 years. There were 101 fractures of the humerus (8), femur (41) and tibia (52). The median ISS was 14. The mean OD per fracture was 55.8 min. The average LOS was 11 days. A prolonged OD was significantly associated with fracture-to-fixation time > 5 days, fractures with end-segment involvement, fixation with SIGN standard and thinner nails, open reduction, supplemental plating, and antegrade femoral nailing. Radiographic and functional outcomes were satisfactory. Ten patients developed post-operative breathing difficulty warranting oxygen administration. Four fractures were infected. No mortality within the first post-operative year.

CONCLUSION

The study identified fracture fixation beyond five days, end-segment involvement, open reduction, use of standard and thinner nails, supplemental plating, and antegrade femoral nailing as factors that can prolong the OD during single-stage fixation of multiple concurrent LBFs in settings without modern fracture-care equipment. While some of these factors are unmodifiable on certain occasions, bearing them in mind can improve pre-operative planning and intra-operative efficiency to reduce OD.

Sex-Specific Differences in Sepsis Development in Polytrauma Patients Undergoing Stand-Alone Definitive Surgery

Background and Objectives: In the triaging of polytrauma, patients with less severe injuries and lower somatic stress often undergo isolated definitive orthopedic surgery without damage-control procedures. Adverse events, particularly sepsis, should be minimized. We aimed to identify sex-specific predictors for sepsis in polytrauma patients undergoing stand-alone definitive surgery. Materials and Methods: Our institutional trauma database, containing data from 3653 patients between 1996 and 2022, was filtered for polytrauma patients who underwent definitive surgery, were aged ≥16 years, and had an Injury Severity Score (ISS) ≥16. Injury and physiological parameters were documented upon admission, as well as on the first and second days thereafter. Surgical data were also recorded. All factors were evaluated for their association with sepsis development. Results: Among the 276 patients (71.1% male; mean age 45.0 years, 95% confidence interval 42.7-47.2 years; median ISS of 27, interquartile range, 20-34), the rate of sepsis was 13.8% (n = 38), with a higher incidence in males (16.7%; n = 33) than in females (6.8%; n = 5) (p = 0.026). Head and thorax injuries were more common and severe in septic males, with thorax injuries being predictive. Male patients who developed sepsis also had a higher ISS, an increased heart rate (HR), and lower pH at admission, with ISS and HR being predictive of sepsis. On the first day post-admission, septic males showed higher Base Excess and lower Prothrombin Time. Lactate levels were elevated on both the first and second days post-admission. Surgical predictors for males included less primary extremity surgeries and later secondary spine surgeries. Conclusions: Sepsis is more common in males undergoing stand-alone definitive surgery. Several factors, particularly acidosis and coagulopathy, are associated with this phenomenon. Fewer primary extremity surgeries and delayed secondary spine surgeries were also linked to a higher sepsis risk in males. These findings may help identify patients eligible for stand-alone definitive surgery and underscore the need for more data on female polytrauma patients.

1-Year Follow-Up Result of Early Definitive Management of the Trauma Patient in a Tertiary Health Care Centre

Introduction

Road traffic accidents (RTA) account for a sizable portion of morbidity and mortality globally, with a particularly high incidence among young and active individuals. Patients presenting with polytrauma require a multidisciplinary approach guided by protocols for advanced trauma life support.

Case Report

We report the case of a 31-year-old female, transferred-in to our center following primary care after an RTA on June 17th, 2023. Initial assessment at the other hospital found multiple fractures accompanying her internal injuries - a right haemothorax and pulmonary contusion, with Grade 3 injuries to the liver, spleen, and kidneys. The patient, who was also found to be pregnant, presented to our facility with hypotension and breathlessness. Stabilization efforts spanned to include ventilatory support following resuscitation in the intensive care unit. Upon achieving hemodynamic stabilization, early definitive fixation was meticulously planned and implemented, leading to intramedullary nailing of the femur, open reduction and internal fixation in the left wrist, and percutaneous fixation of the right acetabulum. Despite landing in post-operative complications such as pleural effusion and subcutaneous emphysema, the patient showed remarkable recovery and was successfully extubated on June 27th, 2023. She was discharged vitally stable, and continued recovery at her residence. The patient managed to regain full range of motion in all joints, with good union of fractures at the end of her 1-year post-operative follow-up period.

Conclusion

This case highlights the importance of tailoring an approach which was unique to the polytrauma presentation. While damage control orthopaedics is often recommended in unstable patients, early definitive orthopedic care must be considered where patients are successfully resuscitated and stabilized, invariably improving trauma outcomes.

Medical and Surgical Emergencies in Occupational Medicine: A Comprehensive Review

This review aims to provide a general resource for occupational health stakeholders. It also serves as a clinical guide for frontline providers and a policy framework for employers and regulators. Medical and surgical emergencies in occupational settings can cause serious harm if not identified and managed early. This review covers trauma, chemical exposures, thermal injuries, respiratory distress, and infectious hazards. We outline clinical signs, diagnostic steps, initial care, and follow-up plans. We also discuss preventive strategies such as hazard assessments and safety protocols. Evidence-based guidelines and practical methods can lower injury and death rates. Our objective is to help stakeholders recognize risks, respond fast, and improve outcomes. Future studies should monitor and examine new threats, such as novel industrial processes and evolving pathogens, to optimize workplace safety.

Impact of Surgical Timing on Fracture Healing in Tibial Shaft Injuries: A Comparative Review of Intramedullary Nailing Techniques

Tibial shaft fractures are a prevalent and challenging orthopedic injury, often resulting from high-energy trauma. Optimal management of these fractures is crucial to prevent complications such as nonunion, malunion, and prolonged functional impairment. Intramedullary nailing (IMN) is widely regarded as the gold standard for treating these injuries due to its ability to provide stable fixation, preserve soft tissues, and enable early mobilization. However, the timing of surgical intervention remains a topic of ongoing debate. Early surgical intervention, defined as surgery within 24-48 hours of injury, is advocated for its potential to reduce hospital stay, facilitate early mobilization, and decrease the risk of secondary complications such as compartment syndrome. Conversely, delayed intervention allows for patient stabilization and reduction of soft tissue swelling, potentially lowering the risk of infection and other complications. This comprehensive review aims to evaluate the impact of surgical timing on fracture healing outcomes in tibial shaft fractures treated with IMN. It explores the benefits and limitations of early versus delayed surgery, emphasizing their influence on union rates, healing time, and complication rates. Furthermore, the review examines different IMN techniques, including reamed versus unreamed and static versus dynamic nailing, to determine their role in optimizing fracture healing. By synthesizing current evidence, this review provides critical insights into the optimal timing and technique for IMN in tibial shaft fractures, ultimately aiming to guide clinical decision-making and improve patient outcomes. Future research should focus on randomized controlled trials to establish standardized surgical timing and technique selection guidelines in this patient population.

Damage Control Orthopaedics Induced Less Trauma-Induced Coagulopathy than Early Total Care in a Porcine Polytrauma Model

INTRODUCTION

Coagulopathic disorders (CDs) complicate treatment in polytraumatised patients. Against this background, operative strategies for fracture management are controversial in this cohort. This study therefore investigated the effects of two established operative concepts, early total care (ETC) and damage control orthopaedics (DCO), on CD in a large-animal polytrauma (PT) model.

METHODS

Twenty-two animals (Sus scrofa domesticus) sustained PT involving blunt-chest trauma, liver laceration, bilateral femur fracture, and pressure-controlled haemorrhagic shock. After resuscitation, animals were allocated to ETC (n = 8), DCO (n = 8), or served as a non-traumatised control group (CG, n = 6). Animals were ventilated and monitored under ICU standards for 72 h. Blood samples were collected at baseline and post-trauma after 1.5, 2.5, 24, 48, and 72 h. Plasminogen activator inhibitor-1 (PAI-1) and thrombin-antithrombin (TAT) complex concentrations were determined by ELISA.

RESULTS

Compared to the CG, ETC and DCO subjects had significantly increased plasma concentrations of PAI-1 after 2.5 h (CG vs. ETC: p = 0.0050, CG vs. DCO: p = 0.0016). Furthermore, the ETC group showed significantly increased plasma PAI-1 concentrations after 24 h compared to the CG and DCO groups (CG vs. ETC: p = 0.0002, DCO vs. ETC: p = 0.0004). During the later clinical course, concentrations of TAT were significantly increased in the ETC group compared to the CG and DCO group after 72 h (CG vs. ETC: p = 0.0290, DCO vs. ETC: p = 0.0322).

CONCLUSION

PT is strongly associated with CD in the early post-traumatic course. In comparison to DCO, ETC appeared to be negatively associated with CD. Future studies must investigate this impact, especially in those patients admitted with trauma-induced coagulopathy, to improve outcomes.

Pulmonary miRNA expression after polytrauma depends on the surgical invasiveness and displays an anti-inflammatory pattern by the combined inhibition of C5 and CD14

Background

Respiratory failure can be a severe complication after polytrauma. Extensive systemic inflammation due to surgical interventions, as well as exacerbated post-traumatic immune responses influence the occurrence and progression of respiratory failure. This study investigated the effect of different surgical treatment modalities as well as combined inhibition of the complement component C5 and the toll-like receptor molecule CD14 (C5/CD14 inhibition) on the pulmonary microRNA (miRNA) signature after polytrauma, using a translational porcine polytrauma model.

Methods

After induction of general anesthesia, animals were subjected to polytrauma, consisting of blunt chest trauma, bilateral femur fractures, hemorrhagic shock, and liver laceration. One sham group (n=6) and three treatment groups were defined; Early Total Care (ETC, n=8), Damage Control Orthopedics (DCO, n=8), and ETC + C5/CD14 inhibition (n=4). Animals were medically and operatively stabilized, and treated in an ICU setting for 72 h. Lung tissue was sampled, miRNAs were isolated, transcribed, and pooled for qPCR array analyses, followed by validation in the individual animal population. Lastly, mRNA target prediction was performed followed by functional enrichment analyses.

Results

The miRNA arrays identified six significantly deregulated miRNAs in lung tissue. In the DCO group, miR-129, miR-192, miR-194, miR-382, and miR-503 were significantly upregulated compared to the ETC group. The miRNA expression profiles in the ETC + C5/CD14 inhibition group approximated those of the DCO group. Bioinformatic analysis revealed mRNA targets and signaling pathways related to alveolar edema, pulmonary fibrosis, inflammation response, and leukocytes recruitment. Collectively, the DCO group, as well as the ETC + C5/CD14 inhibition group, revealed more anti-inflammatory and regenerative miRNA expression profiles.

Conclusion

This study showed that reduced surgical invasiveness and combining ETC with C5/CD14 inhibition can contribute to the reduction of pulmonary complications.

LOW INFECTION AND NON-UNION RATES IN POLYTRAUMA FEMORAL FRACTURES: A RETROSPECTIVE STUDY

Objective

Assess complications and risks in staged femoral shaft fracture treatment using external fixation and intramedullary nailing (DCO).

Methods

Analysis involved 37 patients with 40 fractures, mostly male (87.5%), average age 32.9 years. Data included ASA score, AO/OTA and Gustilo classifications, Glasgow Coma Score, Injury Severity Score, times to external fixation and conversion, ICU duration, nail type, and reaming status. Complications tracked were mortality, deep infection, and non-union.

Results

Predominant fracture type was AO/OTA A (45%), with 40% open (Gustilo A, 93.8%). Average ISS was 21; GCS was 12.7. Median ICU stay was 3 days; average time to conversion was 10.2 days. Retrograde nails were used in 50% of cases, with reaming in 67.5%. Complications included deep infections in 5% and non-union in 2.5%.

Conclusion

DCO strategy resulted in low infection and non-union rates, associated with lower GCS and longer ICU stays. Level of Evidence III; Retrospective Cohort Study.

Damage-control orthopedics or early total care: What you need to know

ABSTRACT

Patients with multisystem injuries are defined as multiply injured patients and may need multiple surgical procedures from more than one specialty. The importance of evaluating and understanding the resuscitation status of a multiple-injury patient is critical. Orthopedic strategies when caring for these patients include temporary stabilization or definitive early fixation of fractures while preventing further insult to other organ systems. This article will define multiple injuries and discuss specific markers used in assessing patients' hemodynamic and resuscitation status. The decision to use damage-control orthopedics or early total care for treatment of the patient are based on these factors, and an algorithm is presented to guide treatment. We will also discuss principles of external fixation and the management of pelvic trauma in a multiple-injury patient.

[Research progress of pubic symphysis diastasis]

Objective

To review the research progress of pubic symphysis diastasis and provide effective reference for orthopedic surgeons in the diagnosis and treatment of pubic symphysis diastasis.

Methods

The anatomy, injury mechanism, treatment, and other aspects of pubic symphysis diastasis were summarized and analyzed by reviewing the relevant research literature at domestically and internationally in recent years.

Results

The incidence of pubic symphysis diastasis is high in pelvic fractures, which is caused by the injury of the ligaments and fibrocartilage disc around the pubic symphysis by external force. The treatment plan should be individualized according to the pelvic stability and the needs of patients, aiming to restore the stability and integrity of the pelvis and improve the quality of life of patients after surgery.

Conclusion

At present, the research on pubic symphysis diastasis still needs to be improved. In the future, high-quality, multi-center, and large-sample studies are of great significance for the selection of treatment methods and the evaluation of effectiveness for patients with pubic symphysis diastasis.

Circulating miRNA expression in extracellular vesicles is associated with specific injuries after multiple trauma and surgical invasiveness

Introduction

Two trauma treatment principles are Early Total Care (ETC), and Damage Control Orthopedics (DCO). Cellular mechanisms that underlie the connection between treatment type, its systemic effects, and tissue regeneration are not fully known. Therefore, this study aimed to: 1) profile microRNA (miRNA) expression in plasma derived Extracellular Vesicles (EVs) from a porcine multiple trauma model at different timepoints, comparing two surgical treatments; and 2) determine and validate the miRNA's messengerRNA (mRNA) targets.

Methods

The porcine multiple trauma model consisted of blunt chest trauma, liver laceration, bilateral femur fractures, and controlled haemorrhagic shock. Two treatment groups were defined, ETC (n=8), and DCO (n=8). Animals were monitored under Intensive Care Unit-standards, blood was sampled at 1.5, 2.5, 24, and 72 hours after trauma, and EVs were harvested from plasma. MiRNAs were analysed using quantitative Polymerase Chain Reaction arrays. MRNA targets were identified in silico and validated in vivo in lung and liver tissue.

Results

The arrays showed distinct treatment specific miRNA expression patterns throughout all timepoints, and miRNAs related to the multiple trauma and its individual injuries. EV-packed miRNA expression in the ETC group was more pro-inflammatory, indicating potentially decreased tissue regenerative capacities in the acute post-traumatic phase. In silico target prediction revealed several overlapping mRNA targets among the identified miRNAs, related to inflammation, (pulmonary) fibrosis, and Wnt-signalling. These were, among others, A Disintegrin and Metalloproteinase domain-containing protein 10, Collagen Type 1 Alpha 1 Chain, Catenin Beta Interacting Protein 1, and Signal Transducers and Activators of Transcription 3. Validation of these mRNA targets in the lung showed significant, treatment specific deregulations which matched the expression of their upstream miRNAs. No significant mRNA deregulations were observed in the liver.

Discussion

This study showed treatment specific, EV-packed miRNA expression patterns after trauma that correlated with mRNA expressions in the lungs, target organs over distance. A systemic response to the increased surgical trauma in the ETC group was identified, with various miRNAs associated with injuries from the trauma model, and involved in (systemic) inflammation, tissue regeneration. EV-transported miRNAs demonstrated a clear role in multiple trauma, warranting further research into tissue-tissue talk and therapeutic applications of EVs after trauma.

Early total care or damage control orthopaedics for major fractures ? Results of propensity score matching for early definitive versus early temporary fixation based on data from the trauma registry of the German Trauma Society (TraumaRegister DGU®)

PURPOSE

Damage control orthopaedics (DCO) und early total care (ETC) are well-established strategies for managing severely injured patients. There is no definitive evidence of the superiority of DCO over ETC in polytrauma patients. We conducted this study to assess the probability of a polytraumatised patient undergoing DCO. In addition, the effect of DCO on complications and mortality was investigated.

METHODS

We analysed data from 12,569 patients with severe trauma (Injury Severity Score ≥ 16) who were enrolled in the trauma registry of the German Trauma Society (TraumaRegister DGU®) from 2009 to 2016 and had undergone surgery for extremity or pelvic fractures. These patients were allocated to a DCO or an ETC group. We used the propensity score to identify factors supporting the use of DCO. For a comparison of mortality rates, the groups were stratified and matched on the propensity score.

RESULTS

We identified relevant differences between DCO and ETC. DCO was considerably more often associated with packed red blood cell (pRBC) transfusions (33.9% vs. 13.4%), catecholamine therapy (14.1% vs. 6.8%), lower extremity injuries (72.4% vs. 53.5%), unstable pelvic fractures (41.0% vs. 25.9%), penetrating injuries (2.8% vs. 1.5%), and shock (20.5% vs. 10.8%) and unconsciousness (23.7% vs. 16.3%) on admission. Based on the propensity score, patients with penetrating trauma, pRBC transfusions, unstable pelvic fractures, and lower extremity injuries were more likely to undergo DCO. A benefit of DCO such as reduced complications or reduced mortality was not detected.

CONCLUSION

We could identify some parameters of polytrauma patients used in the trauma registry (Traumaregister DGU®), which led more likely to a DCO therapy. The propensity score did not demonstrate the superiority of DCO over ETC in terms of outcome or complications. It did not appear to adequately adjust for the variables used here. Definitive evidence for or against the use of DCO remains unavailable.

Surgical load in major fractures - results of a survey on the optimal quantification and timing of surgery in polytraumatized patients

PURPOSE

It is known that the magnitude of surgery and timing of surgical procedures represents a crucial step of care in polytraumatized patients. In contrast, it is not clear which specific factors are most critical when evaluating the surgical load (physiologic burden to the patient incurred by surgical procedures). Additionally, there is a dearth of evidence for which body region and surgical procedures are associated with high surgical burden. The aim of this study was to identify key factors and quantify the surgical load for different types of fracture fixation in multiple anatomic regions.

METHODS

A standardized questionnaire was developed by experts from Société Internationale de Chirurgie Orthopédique et de Traumatologie (SICOT)-Trauma committee. Questions included relevance and composition of the surgical load, operational staging criteria, and stratification of operation procedures in different anatomic regions. Quantitative values according to a five-point Likert scale were chosen by the correspondents to determine the surgical load value based on their expertise. The surgical load for different surgical procedures in different body regions could be chosen in a range between "1," defined as the surgical load equivalent to external (monolateral) fixator application, and "5," defined as the maximal surgical load possible in that specific anatomic region.

RESULTS

This questionnaire was completed online by 196 trauma surgeons from 61 countries in between Jun 26, 2022, and July 16, 2022 that are members of SICOT. The surgical load (SL) overall was considered very important by 77.0% of correspondents and important by 20.9% correspondents. Intraoperative blood loss (43.2%) and soft tissue damage (29.6%) were chosen as the most significant factors by participating surgeons. The decision for staged procedures was dictated by involved body region (56.1%), followed by bleeding risk (18.9%) and fracture complexity (9.2%). Percutaneous or intramedullary procedures as well as fractures in distal anatomic regions, such as hands, ankles, and feet, were consistently ranked lower in their surgical load.

CONCLUSION

This study demonstrates a consensus in the trauma community about the crucial relevance of the surgical load in polytrauma care. The surgical load is ranked higher with increased intraoperative bleeding and greater soft tissue damage/extent of surgical approach and depends relevantly on the anatomic region and kind of operative procedure. The experts especially consider anatomic regions and the risk of intraoperative bleeding as well as fracture complexity to guide staging protocols. Specialized guidance and teaching is required to assess both the patient's physiological status and the estimated surgical load reliably in the preoperative decision-making and operative staging.

Management of Traumatic Femur Fractures: A Focus on the Time to Intramedullary Nailing and Clinical Outcomes

Background: Femur shaft factures (FSF) are common injuries following high-energy mechanisms mainly involving motor vehicle crashes (MVC). We evaluated the timings of nailing management and analyzed the pattern of fracture union and outcome in a level 1 trauma center. Methods: This was a retrospective observational study of all the admitted trauma patients who sustained femoral fractures between January 2016 and September 2020. Data were analyzed and compared based on time to Intramedullary Nailing (IMN) (<12 h, 12–24 h and >24 h) and outcomes of FSF (union, delayed union and nonunion). Results: A total of 668 eligible patients were included in the study, of which the majority were males (90.9%) with a mean age of 34.5 ± 15.8, and 54% of the injuries were due to MVCs. The chest (35.8%) was the most commonly associated injured body region, followed by the pelvis (25.9%) and spine (25.4%). Most of femur fractures (93.3%) were unilateral, and 84.4% were closed fractures. The complete union of fractures was observed in 76.8% of cases, whereas only 4.2% and 3.3% cases had delayed union and nonunion, respectively, on the clinical follow-up. Patients in the delayed IMN (>24 h) were severely injured, had bilateral femur fracture (p = 0.001) and had higher rate of external fixation, blood transfusion, pulmonary complications and prolonged hospitalization. Non-union proportion was greater in those who had IMN <24 h, whereas a delayed union was greater in IMN done after 24 h (p = 0.5). Those with a nonunion femur fracture were more likely to have bilateral fracture (p = 0.003), frequently had retrograde nailing (p = 0.01), and high-grade femur fracture (AO type C; p = 0.04). Conclusion: This study showed that femur fracture is not uncommon (8.9%), which is manifested with the variety of clinical characteristics, depending on the mechanism, management and outcome in our center. Bilateral fracture, retrograde nailing and AO classification type C were the significant risk factors of non-union in patients with diaphyseal fractures. The timing of IMN has an impact on the fracture union; however, it is not a statistically significant difference. Therefore, the treating physicians should consider the potential risk factors for a better outcome by careful selection of treatment in sub-groups of patients.

Treatment management and outcome of polytraumatized patients in a German certified trauma center - comparing standard versus maximum care

German hospitals are classified as basic, standard and maximum care facilities within the German trauma networks. The Municipal Hospital Dessau was upgraded in 2015 as a maximum care provider. The aim of this study is to investigate whether a change in treatment management and outcome of polytraumatized patients has occurred afterwards. The study compared polytraumatized patients, treated in the Dessau Municipal Clinic as a standard care facility (DessauStandard) from 2012-2014 vs. those treated in the Dessau Municipal Clinic as a maximum care facility (DessauMax) from 2016-2017. Data of the German Trauma Register were analysed using the chi-square test, t-test and odds ratios with 95% confidence intervals.In DessauMax (238 patients; Ø 54 years, SD 22.3; ♂ 160, ♀ 78), the shock room time with 40.7 min (SD 21.4) was shorter than in DessauStandard (206 patients; Ø 56.1 years, SD 22.1; ♂ 133, ♀ 73 ) with 49 min (SD 25.1) (p=0.001). The transfer rate of 1.3% (n=3) to another hospital was lower in DessauMax (p=0.01). DessauStandard had 9 (4%) thromboembolic events and DessauMax 3 (1.3%) (p=0.7). Multiorgan failure was more common in DessauStandard, (16%) than in DessauMax (1.3%; p=0,001). DessauStandard showed a mortality of 13.1% (n=27), and DessauMax 9.2% (n=22) (p=0.22; OR=0.67, 95% CI, 0.37-1.23). The GOS in DessauMax (4.5, SD 1.2) was higher than in DessauStandard (4.1, SD 1.3) (p=0.002).The Dessau Municipal Clinic as a maximum care facility has achieved improved shock room time, fewer complications, lower mortality and an improved outcome.

How to Clear Polytrauma Patients for Fracture Fixation: Results of a systematic review of the literature

INTRODUCTION

Early patient assessment is relevant for surgical decision making in severely injured patients and early definitive surgery is known to be beneficial in stable patients. The aim of this systematic review is to extract parameters indicative of risk factors for adverse outcome. Moreover, we aim to improve decision making and separate patients who would benefit from early versus staged definitive surgical fixation.

METHODS

Following the PRISMA guidelines, a systematic review of peer-reviewed articles in English or German language published between (2000 and 2022) was performed. The primary outcome was the pathophysiological response to polytrauma including coagulopathy, shock/haemorrhage, hypothermia and soft tissue injury (trauma, brain injury, thoracic and abdominal trauma, and musculoskeletal injury) to determine the treatment strategy associated with the least amount of complications. Articles that had used quantitative parameters to distinguish between stable and unstable patients were summarized. Two authors screened articles and discrepancies were resolved by consensus. Quantitative values for relevant parameters indicative of an unstable polytrauma patient were obtained.

RESULTS

The initial systematic search using MeSH criteria yielded 1550 publications deemed relevant to the following topics (coagulopathy (n = 37), haemorrhage/shock (n = 7), hypothermia (n = 11), soft tissue injury (n = 24)). Thresholds for stable, borderline, unstable and in extremis conditions were defined according to the existing literature as follows: Coagulopathy; International Normalized Ratio (INR) and viscoelastic methods (VEM)/Blood/shock; lactate, systolic blood pressure and haemoglobin, hypothermia; thresholds in degrees Celsius/Soft tissue trauma: traumatic brain injury, thoracic and abdominal trauma and musculoskeletal trauma.

CONCLUSION

In this systematic literature review, we summarize publications by focusing on different pathways that stimulate pathophysiological cascades and remote organ damage. We propose that these parameters can be used for clinical decision making within the concept of safe definitive surgery (SDS) in the treatment of severely injured patients.

Outcomes of Reamed Intramedullary Nailing for Lower Extremity Diaphyseal Fractures in COVID-Positive Patients: A Multi-institutional Observational Study

OBJECTIVE

To determine if reamed intramedullary nailing (IMN) of tibial and femoral shaft fractures exacerbated the hypercoagulable state of COVID infection, resulting in increased thromboembolic and pulmonary complications.

DESIGN

Retrospective chart review.

SETTING

Eleven Level I trauma centers.

PATIENTS

From January 1, 2020, to December 1, 2022, 163 patients with orthopaedic trauma and COVID positivity and 36 patients with tibial and femoral shaft fractures were included.

INTERVENTION

Reamed IMN.

MAIN OUTCOME MEASURES

Incidence of postoperative thromboembolic and respiratory complications.

RESULTS

Thirty-six patients with a median age of 52 years (range, 18-92 years; interquartile range, 29-72 years) met criteria. There were 21 and 15 patients with femoral and tibial shaft fractures. There were 15 patients sustaining polytrauma; of which, 10 had a new injury severity score of >17. All patients underwent reamed IMN in a median of 1 day (range, 0-12 days; interquartile range = 1-2 days) after injury. Two patients developed acute respiratory distress syndrome (ARDS) and 3 pneumonia. No patients had pulmonary embolism, deep vein thrombosis, or died within 30 days.

CONCLUSION

In this multi-institutional review of COVID-positive patients undergoing reamed IMN, there were no thromboembolic events. All patients developing pulmonary complications (ARDS or pneumonia) had baseline chronic obstructive pulmonary disease, were immune compromised, or sustained polytraumatic injuries with new injury severity score of >20. Given this, it seems reasonable to continue using reamed IMN for tibial and femoral shaft fractures after evaluation for COVID severity, comorbidities, and other injuries.

LEVELS OF EVIDENCE

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

Management of Complex Upper Extremity Trauma with Associated Vascular Injury

Introduction Combined soft tissue and vascular injuries of the upper extremity pose several challenges at once to the plastic surgeon. Many decisions have to be taken urgently that will influence the salvage or amputation of the affected extremity. The aim of this article was to provide an evidence-based outline for the management of such injuries. Learning objectives of this article are as follows: (1) approach to a patient with upper extremity composite tissue and vascular injury presenting to the emergency, (2) decision-making as to when to salvage and when to go for amputation of the traumatized upper extremity, (3) role of imaging in emergency situation, (4) role of fasciotomy, (5) intraoperative sequencing of steps, and (6) options for vascular reconstruction and the flaps used for coverage. After reading this article, the reader should have a clear understanding of the management of vascular injury in a patient with composite defects of upper extremity.

Pathophysiology in patients with polytrauma

The pathophysiology after polytrauma represents a complex network of interactions. While it was thought for a long time that the direct and indirect effects of hypoperfusion are most relevant due to the endothelial permeability changes, it was discovered that the innate immune response to trauma is equally important in modifying the organ response. Recent multi center studies provided a "genetic storm" theory, according to which certain neutrophil changes are activated at the time of injury. However, a second hit phenomenon can be induced by activation of certain molecules by direct organ injury, or pathogens (damage associated molecular patterns, DAMPS - pathogen associated molecular patterns, PAMPS). The interactions between the four pathogenetic cycles (of shock, coagulopathy, temperature loss and soft tissue injuries) and cross-talk between coagulation and inflammation have also been identified as important modifiers of the clinical status. In a similar fashion, overzealous surgeries and their associated soft tissue injury and blood loss can induce secondary worsening of the patient condition. Therefore, staged surgeries in certain indications represent an important alternative, to allow for performing a "safe definitive surgery" strategy for major fractures. The current review summarizes all these situations in a detailed fashion.

Off-Label Treatment for Severe Craniomaxillofacial Fractures in Low-Income Countries-A Novel Operation Method with the External Face Fixator

Introduction: Craniomaxillofacial fractures (CMF) are common in low-income countries (LIC). Due to limited resources, treatment of these fractures usually consists of interdental wiring or immobilization with a Barton bandage to maintain the reduction by permanent occlusion. These non-surgical treatment methods often lead to unsatisfactory results, such as a disturbed dental occlusion and lockjaw. The aim of this study is to present an off-label treatment option for CMF by applying a hand fixator as external face fixator (EFF) and to demonstrate the surgical method in detail. Materials and Methods: The feasibility and postoperative outcomes of this new off-label operation technique were evaluated by analyzing patients with CMF (n = 13) treated at an NGO hospital in Sierra Leone between 2015 and 2019. Results: The application of the EFF was feasible. The biggest advantage compared to the conventional non-operative methods was, that a dynamic occlusion was still possible during the 6 weeks healing period. Hence, patients could eat and drink almost normally and perform dental hygiene with the EFF in place. We did not discover pintrack infections or other complications. Three patients developed an oronasal fistula due to traumatic a palatal bone loss of about 7–8 mm which was treated by a palatal mucoperiosteal flap 15–20 days after the first operation. Discussion and Conclusions: In LIC, where plate osteosynthesis for CMF cannot be performed due to limited resources the application of an EFF is a promising alternative for a better outcome and an improved quality of life for the patients.

Minimally Invasive Internal Fixation of Femoral Shaft Fractures-A Biomechanical Study with a Disruptive Technique

(1) Background: In polytrauma patients, femur fractures are usually stabilised by external fixation for damage control, later being treated with definitive plate or nail osteosynthesis. Screw/rod systems established in spinal surgery might be inserted for internal fixation, providing sufficient fracture stability that subsequent intervention is unnecessary. This was to be investigated biomechanically. (2) Methods: The unilaterally applied spinal internal fixator (IF) was subjected to load and deformation analysis on artificial femurs with 32-A3 fracture according to AO classification. Distance of screws to fracture and rod to cortical bone were analysed as parameters influenced surgically as stiffness and deformation of the treated fracture. In addition, the stability of another construct with a second screw/rod system was determined. The axial load in stance phase during walking was simulated. The results were compared against an established fixed-angle plate osteosynthesis (IP). (3) Results: There were no implant failures in the form of fractures, avulsions or deformations. All unilateral IF combinations were inferior to IP in terms of stability and stiffness. The bilateral construct with two screw/rod systems achieved biomechanical properties comparable to IP. 4) Conclusion: Biomechanically, a biplanar screw/rod system is suitable for definitive fracture stabilisation of the femur, despite a damage control approach.

Mass casualty, intentional vehicular trauma and anaesthesia

The use of motor vehicles to initiate mass casualty incidents is increasing in frequency and such events are called intentional vehicular assaults. Perpetrators are inspired by a range of terrorist ideologies or have extremist views, criminal intent, or mental health issues. Assaults using a motor vehicle as the principal weapon of attack are easy to launch and require little to no forward planning. This makes them difficult for police and security agencies to predict, prevent, or interdict. With the increasing frequency of intentional vehicular assaults, anaesthesiologists in various settings may be involved in caring for victims and should be engaged in preparing for them. This narrative review examines the literature on vehicle assaults committed around the world and provides an overview of the unique injury patterns and considerations for the pre-hospital, perioperative, and critical care management of victims of these mass casualty events. The article discusses planning, education, and training in an attempt to reduce the mortality and morbidity of intentional vehicular assaults.