Orthopaedic trauma care in Haiti: a cost-effectiveness analysis of an innovative surgical residency program

OBJECTIVE

In an effort to sustainably strengthen orthopaedic trauma care in Haiti, a 2-year Orthopaedic Trauma Care Specialist (OTCS) program for Haitian physicians has been developed. The program will provide focused training in orthopaedic trauma surgery and fracture care utilizing a train-the-trainer approach. The purpose of this analysis was to calculate the cost-effectiveness of the program relative to its potential to decrease disability in the Haitian population.

METHODS

Using established methodology originally outlined in the World Health Organization's Global Burden of Disease project, a cost-effectiveness analysis was performed for the OTCS program in Haiti. Costs and disability-adjusted life-years (DALYs) averted were estimated per fellow trained in the OTCS program by using a 20-year career time horizon. Probabilistic sensitivity analysis was used to simultaneously test the joint uncertainty of the cost and averted DALY estimates. A willingness-to-pay threshold of $1200 per DALY averted, equal to the gross domestic product per capita in Haiti, was selected on the basis of World Health Organization's definition of highly cost-effective health interventions.

RESULTS

The OTCS program results in an incremental cost of $1,542,544 ± $109,134 and 12,213 ± 2,983 DALYs averted per fellow trained. The cost-effectiveness ratio of $133.97 ± $34.71 per DALY averted is well below the threshold of $1200 per DALY averted. Furthermore, sensitivity analysis suggests that implementing the OTCS program is the economically preferred strategy with more than 95% probability at a willingness-to-pay threshold of $200 per DALY averted and across the entire range of potential variable inputs.

CONCLUSIONS

The current economic analysis suggests the OTCS program to be a highly cost-effective intervention. Probabilistic sensitivity analysis demonstrates that the conclusions remain stable even when considering the joint uncertainty of the cost and DALY estimates.

Essentials of disaster management: the role of the orthopaedic surgeon

Disaster preparedness and management education is essential for allowing orthopaedic surgeons to play a valuable, constructive role in responding to disasters. The National Incident Management System, as part of the National Response Framework, provides coordination between all levels of government and uses the Incident Command System as its unified command structure. An "all-hazards" approach to disasters, whether natural, man-made, intentional, or unintentional, is fundamental to disaster planning. To respond to any disaster, command and control must be established, and emergency management must be integrated with public health and medical care. In the face of increasing acts of terrorism, an understanding of blast injury pathophysiology allows for improved diagnostic and treatment strategies. A practical understanding of potential biologic, chemical, and nuclear agents and their attendant clinical symptoms is also prerequisite. Credentialing and coordination between designated organizations and the federal government are essential to allow civilian orthopaedic surgeons to access systems capable of disaster response.

The relationship between time to surgical debridement and incidence of infection after open high-energy lower extremity trauma

BACKGROUND

Urgent débridement of open fractures has been considered to be of paramount importance for the prevention of infection. The purpose of the present study was to evaluate the relationship between the timing of the initial treatment of open fractures and the development of subsequent infection as well as to assess contributing factors.

METHODS

Three hundred and fifteen patients with severe high-energy lower extremity injuries were evaluated at eight level-I trauma centers. Treatment included aggressive débridement, antibiotic administration, fracture stabilization, and timely soft-tissue coverage. The times from injury to admission and operative débridement as well as a wide range of other patient, injury, and treatment-related characteristics that have been postulated to affect the risk of infection within the first three months after injury were studied, and differences between groups were calculated. In addition, multivariate logistic regression models were used to control for the effects of potentially confounding patient, injury, and treatment-related variables.

RESULTS

Eighty-four patients (27%) had development of an infection within the first three months after the injury. No significant differences were found between patients who had development of an infection and those who did not when the groups were compared with regard to the time from the injury to the first débridement, the time from admission to the first débridement, or the time from the first débridement to soft-tissue coverage. The time between the injury and admission to the definitive trauma treatment center was an independent predictor of the likelihood of infection.

CONCLUSIONS

The time from the injury to operative débridement is not a significant independent predictor of the risk of infection. Timely admission to a definitive trauma treatment center has a significant beneficial influence on the incidence of infection after open high-energy lower extremity trauma.

Use of negative pressure wound therapy during aeromedical evacuation of patients with combat-related blast injuries

The purpose of the study was to evaluate safety and feasibility of negative pressure wound therapy (NPWT) during aeromedical evacuation from a combat zone to a regional treatment center. A retrospective review of patients who received NPWT during aeromedical evacuation from Iraq or Afghanistan to Landstuhl Regional Medical Center (LRMC) was performed. Data were collected describing mechanism of injury; anatomic site of NPWT application; number of sites per patient; date and time of NPWT application; date, time, and wound condition on arrival and inspection at LRMC; and complications encountered during aeromedical evacuation. Broad definitions of complications were employed. Any reported malfunction of NPWT devices or need to reinforce NPWT dressings was abstracted. Presence of tissue under the dressing requiring debridement was defined as a minor complication. Major complications were defined as wound sepsis with systemic manifestations. A total of 218 patients who had received NPWT for 298 wounds (1.37 per patient) during aeromedical evacuation were identified. Most wounds were due to high-energy blast or ballistic mechanisms. Average time from NPWT application to removal was 53 hours (range, 18-133 +/- 22 hours). Complications occurred at 14% of NPWT sites and in 19% of patients receiving NPWT. Most recorded complications were minor (95%). Two patients who arrived at LRMC with fever and evidence of wound sepsis improved rapidly after additional operative debridement. In no case was failure of the NPWT device in flight specifically implicated in the genesis of a recorded complication. In-flight device problems were identified in seven cases. Four of these could not be repaired in flight and were clamped. Complications were not increased in this cohort. Use of NPWT during aeromedical evacuation appears safe and feasible in a large cohort of patients with high-energy injuries. Complications were consistent with severity of injury and not related to failure of NPWT.

Extrapolation of battlefield resuscitative care to the civilian setting

Experiences in treating wartime casualties in Iraq and Afghanistan have already led to changes in civilian trauma care practices. While advances in the care of civilian musculoskeletal injuries are likely as a result of ongoing military basic and clinical research, major advances in resuscitative care have already been realized. Early liberal use of tourniquets to control bleeding from combat-associated extremity trauma has led to decreased mortality. Military experience has demonstrated that use of temporary intravascular shunts is effective for mitigating ischemic injury from vascular trauma until definitive repair can be accomplished. Hemostatic dressings have improved the surgeon's hemorrhage control armamentarium. Clinical experience with hypotensive resuscitation has led to refinement and improvement in the technique. Use of recombinant factor VIIa has improved hemorrhage control in the context of brain injury and coagulopathy and increasing the ratio of plasma to red cells during early shock resuscitation has improved survival.

Determinants of patient satisfaction after severe lower-extremity injuries

BACKGROUND

In health care, increased emphasis has been placed on patient-centered care, but to our knowledge little work has been conducted to understand the influences on patient satisfaction after surgery for the treatment of severe lower-extremity injury. Our purpose was to analyze how the patient's satisfaction with the outcome correlates with other measures of outcome (clinical, functional, physical impairment, psychological impairment, and pain) and with the sociodemographic characteristics of the patient, the nature of the injury, and the treatment decisions.

METHODS

Four hundred and sixty-three patients treated for limb-threatening lower-extremity injuries at eight level-I trauma centers were followed prospectively. Multivariate regression techniques were used to identify factors correlating with variation in patient self-reported satisfaction at two years after the injury. The outcomes that were tested in the model were pain, range of motion, muscle strength, self-selected walking speed, depression, anxiety, the physical and psychosocial scores of the Sickness Impact Profile (SIP), return to work, and the number of major complications. The patient characteristics that were tested in the model were age, sex, education, poverty status, insurance status, occupation, race, personality profile, and medical comorbidities. Injury severity was tested in the model with use of both the Injury Severity Score and a score reflecting the probability of amputation. The treatment decisions that were tested were amputation versus reconstruction and time to treatment.

RESULTS

No patient demographic, treatment, or injury characteristics were found to correlate with patient satisfaction. Only measures of physical function, psychological distress, clinical recovery, and return to work correlated with patient satisfaction at two years. Five of these outcome measures accounted for >35% of the overall variation in patient satisfaction; these were return to work (p < 0.05), depression (p < 0.05), the physical functioning component of the SIP (p < 0.01), self-selected walking speed (p < 0.001), and pain intensity (p < 0.001). The absence of major complications and less anxiety were marginally significant (p < 0.1).

CONCLUSIONS

Patient satisfaction after surgical treatment of lower-extremity injury is predicted more by function, pain, and the presence of depression at two years than by any underlying characteristic of the patient, injury, or treatment.

Health-care costs associated with amputation or reconstruction of a limb-threatening injury

BACKGROUND

Recent reports have suggested that functional outcomes are similar following either amputation or reconstruction of a severely injured lower extremity. The goal of this study was to compare two-year direct health-care costs and projected lifetime health-care costs associated with these two treatment pathways.

METHODS

Two-year health-care costs were estimated for 545 patients with a unilateral limb-threatening lower-extremity injury treated at one of eight level-I trauma centers. Included in the calculation were costs related to (1) the initial hospitalization, (2) all rehospitalizations for acute care related to the limb injury, (3) inpatient rehabilitation, (4) outpatient doctor visits, (5) outpatient physical and occupational therapy, and (6) purchase and maintenance of prosthetic devices. All dollar figures were inflated to constant 2002 dollars with use of the medical service Consumer Price Index. To estimate projected lifetime costs, the number of expected life years was multiplied by an estimate of future annual health-care costs and added to an estimate of future costs associated with the purchase and maintenance of prosthetic devices.

RESULTS

When costs associated with rehospitalizations and post-acute care were added to the cost of the initial hospitalization, the two-year costs for reconstruction and amputation were similar. When prosthesis-related costs were added, there was a substantial difference between the two groups ($81,316 for patients treated with reconstruction and $91,106 for patients treated with amputation). The projected lifetime health-care cost for the patients who had undergone amputation was three times higher than that for those treated with reconstruction ($509,275 and $163,282, respectively).

CONCLUSIONS

These estimates add support to previous conclusions that efforts to improve the rate of successful reconstructions have merit. Not only is reconstruction a reasonable goal at an experienced level-I trauma center, it results in lower lifetime costs.

The impact of trauma centre accreditation on patient outcome

Trauma centre accreditation originated as a North American initiative in the 1970's with the aim of standardising and improving care for injured patients. This system of grading a hospital's ability to receive serious trauma has subsequently spread, most notably to Australasia. Many studies have focussed on determing whether this accreditation results in improved patient outcomes. We review the evidence to date, which suggests significant mortality reductions albeit from mainly Class III studies and reflect on the future sustainability of this initiative given mounting financial pressures.

Early predictors of long-term work disability after major limb trauma

BACKGROUND

A better understanding of the factors influencing return to work (RTW) after major limb trauma is essential in reducing the high costs associated with these injuries.

METHODS

Patients (n = 423) who underwent amputation or reconstruction after limb threatening lower extremity trauma and who were working before the injury were prospectively evaluated at 3, 6, 12, 24, and 84 months. Time to first RTW was assessed. For individuals working at 84 months, the percentage of time limited in performance at work was estimated using the Work Limitations Questionnaire.

RESULTS

Estimates of the cumulative proportion returning to work at 3, 6, 12, 24, and 84 months were 0.12, 0.28, 0.42, 0.51, and 0.58. Patients working at 84 months were, on average, limited in their ability to perform the demands of their job 20 to 25% of the time. In the context of a Cox proportional hazards model, differences in RTW outcomes by treatment (amputation versus reconstruction) were not statistically significant. Factors that were significantly associated (p < 0.05) with higher rates of RTW include younger age, being White, higher education, being a nonsmoker, average to high self efficacy, preinjury job tenure, higher job involvement, and no litigation. Early (3 month) assessments of pain and physical functioning were significant predictors of RTW.

CONCLUSIONS

Return to work after severe lower extremity trauma remains a challenge. Although the causal pathway from injury to impairment and work disability is complex, this study points to several factors that influence RTW that suggest strategies for intervention.

Timing of débridement of open fractures

Although débridement within 6 to 8 hours of injury seems nearly universally accepted, the data supporting this recommendation are lacking. Most studies indicate that, in the context of modern antibiotic treatment, early débridement is not an independent predictor of decreased risk of infection. Achieving early débridement may pose unjustified risks to patient safety. Given the numerous factors that influence timing of surgical débridement in trauma centers, a prospective randomized trial of emergent versus urgent débridement is not feasible. However, a prospective longitudinal study could yield valuable data.

Timing of wound coverage in extremity war injuries

Although several studies have been done on the timing of débridement of open fracture, none has specifically examined the effect of timing of soft-tissue coverage on outcome in the types of lower extremity injury being encountered in Iraq and Afghanistan, namely, injuries associated with the detonation of improvised explosive devices. Complex limb salvage requiring free tissue transfer or rotational flap coverage for soft-tissue defects has been commonly performed during the recent military conflicts in Iraq and Afghanistan. Current treatment protocols favor the inclusion of timely and stable axial limb fixation, radical débridement of all compromised soft tissues and osseous structures, and early wound closure with healthy, well-vascularized autologous tissue. In an attempt to minimize overall morbidity, a comprehensive plan must be made to sequentially reconstruct the involved extremity in order to achieve the highest level of function possible, with a durable construct, in the shortest period of time. Prospective studies are necessary to evaluate the effect of timing of coverage on outcome and on limb salvage.

Recombinant human BMP-2 and allograft compared with autogenous bone graft for reconstruction of diaphyseal tibial fractures with cortical defects. A randomized, controlled trial

BACKGROUND

Currently, the treatment of diaphyseal tibial fractures associated with substantial bone loss often involves autogenous bone-grafting as part of a staged reconstruction. Although this technique results in high healing rates, the donor-site morbidity and potentially limited supply of suitable autogenous bone in some patients are commonly recognized drawbacks. The purpose of the present study was to investigate the benefit and safety of the osteoinductive protein recombinant human bone morphogenetic protein-2 (rhBMP-2) when implanted on an absorbable collagen sponge in combination with freeze-dried cancellous allograft.

METHODS

Adult patients with a tibial diaphyseal fracture and a residual cortical defect were randomly assigned to receive either autogenous bone graft or allograft (cancellous bone chips) for staged reconstruction of the tibial defect. Patients in the allograft group also received an onlay application of rhBMP-2 on an absorbable collagen sponge. The clinical evaluation of fracture-healing included an assessment of pain with full weight-bearing and fracture-site tenderness. The Short Musculoskeletal Function Assessment (SMFA) was administered before and after treatment. Radiographs were used to document union, the presence of extracortical bridging callus, and incorporation of the bone-graft material.

RESULTS

Fifteen patients were enrolled in each group. The mean length of the defect was 4 cm (range, 1 to 7 cm). Ten patients in the autograft group and thirteen patients in the rhBMP-2/allograft group had healing without further intervention. The mean estimated blood loss was significantly less in the rhBMP-2/allograft group. Improvement in the SMFA scores was comparable between the groups. No patient in the rhBMP-2/allograft group had development of antibodies to BMP-2; one patient had development of transient antibodies to bovine type-I collagen.

CONCLUSIONS

The present study suggests that rhBMP-2/allograft is safe and as effective as traditional autogenous bone-grafting for the treatment of tibial fractures associated with extensive traumatic diaphyseal bone loss.

LEVEL OF EVIDENCE

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

Recombinant human BMP-2 and allograft compared with autogenous bone graft for reconstruction of diaphyseal tibial fractures with cortical defects. A randomized, controlled trial

BACKGROUND

Currently, the treatment of diaphyseal tibial fractures associated with substantial bone loss often involves autogenous bone-grafting as part of a staged reconstruction. Although this technique results in high healing rates, the donor-site morbidity and potentially limited supply of suitable autogenous bone in some patients are commonly recognized drawbacks. The purpose of the present study was to investigate the benefit and safety of the osteoinductive protein recombinant human bone morphogenetic protein-2 (rhBMP-2) when implanted on an absorbable collagen sponge in combination with freeze-dried cancellous allograft.

METHODS

Adult patients with a tibial diaphyseal fracture and a residual cortical defect were randomly assigned to receive either autogenous bone graft or allograft (cancellous bone chips) for staged reconstruction of the tibial defect. Patients in the allograft group also received an onlay application of rhBMP-2 on an absorbable collagen sponge. The clinical evaluation of fracture-healing included an assessment of pain with full weight-bearing and fracture-site tenderness. The Short Musculoskeletal Function Assessment (SMFA) was administered before and after treatment. Radiographs were used to document union, the presence of extracortical bridging callus, and incorporation of the bone-graft material.

RESULTS

Fifteen patients were enrolled in each group. The mean length of the defect was 4 cm (range, 1 to 7 cm). Ten patients in the autograft group and thirteen patients in the rhBMP-2/allograft group had healing without further intervention. The mean estimated blood loss was significantly less in the rhBMP-2/allograft group. Improvement in the SMFA scores was comparable between the groups. No patient in the rhBMP-2/allograft group had development of antibodies to BMP-2; one patient had development of transient antibodies to bovine type-I collagen.

CONCLUSIONS

The present study suggests that rhBMP-2/allograft is safe and as effective as traditional autogenous bone-grafting for the treatment of tibial fractures associated with extensive traumatic diaphyseal bone loss.

LEVEL OF EVIDENCE

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

Long-term persistence of disability following severe lower-limb trauma. Results of a seven-year follow-up

BACKGROUND

A recent study demonstrated that patients treated with amputation and those treated with reconstruction had comparable functional outcomes at two years following limb-threatening trauma. The present study was designed to determine whether those outcomes improved after two years, and whether differences according to the type of treatment emerged.

METHODS

Three hundred and ninety-seven patients who had undergone amputation or reconstruction of the lower extremity were interviewed by telephone at an average of eighty-four months after the injury. Functional outcomes were assessed with use of the physical and psychosocial subscores of the Sickness Impact Profile (SIP) and were compared with similar scores obtained at twenty-four months.

RESULTS

On the average, physical and psychosocial functioning deteriorated between twenty-four and eighty-four months after the injury. At eighty-four months, one-half of the patients had a physical SIP subscore of > or = 10 points, which is indicative of substantial disability, and only 34.5% had a score typical of a general population of similar age and gender. There were few significant differences in the outcomes according to the type of treatment, with two exceptions. Compared with patients treated with reconstruction for a tibial shaft fracture, those with only a severe soft-tissue injury of the leg were 3.1 times more likely to have a physical SIP subscore of 5 points (p < 0.05) and those treated with a through-the-knee amputation were 11.5 times more likely to have a physical subscore of 5 points (p < 0.05). There were no significant differences in the psychosocial outcomes according to treatment group. Patient characteristics that were significantly associated with poorer outcomes included older age, female gender, nonwhite race, lower education level, living in a poor household, current or previous smoking, low self-efficacy, poor self-reported health status before the injury, and involvement with the legal system in an effort to obtain disability payments. Except for age, predictors of poor outcome were similar at twenty-four and eighty-four months after the injury.

CONCLUSIONS

The results confirm previous conclusions that reconstruction for the treatment of injuries below the distal part of the femur typically results in functional outcomes equivalent to those of amputation. Regardless of the treatment option, however, long-term functional outcomes are poor. Priority should be given to efforts to improve post-acute-care services that address secondary conditions that compromise optimal recovery.

Outcomes after treatment of high-energy tibial plafond fractures

BACKGROUND

Although a number of investigators have documented clinical outcomes and complications associated with tibial plafond, or pilon, fractures, very few have examined functional and general health outcomes associated with these fractures. Our purpose was to assess midterm health, function, and impairment after pilon fractures and to examine patient, injury, and treatment characteristics that influence outcome.

METHODS

A retrospective cohort analysis of pilon fractures treated at two centers between 1994 and 1995 was conducted. Patient, injury, and treatment characteristics were recorded from patient interviews and medical record abstraction. Study participants returned to the initial treatment centers for a comprehensive evaluation of their health status. The primary outcomes that were measured included general health, walking ability, limitation of range of motion, pain, and stair-climbing ability. A secondary outcome measure was employment status.

RESULTS

Eighty (78%) of 103 eligible patients were evaluated at a mean of 3.2 years after injury. General health, as measured with the Short Form-36 (SF-36), was significantly poorer than age and gender-matched norms. Thirty-five percent of the patients reported substantial ankle stiffness; 29%, persistent swelling; and 33%, ongoing pain. Of sixty-five participants who had been employed before the injury, twenty-eight (43%) were not employed at the time of follow-up; nineteen (68%) of the twenty-eight reported that the pilon fracture prevented them from working. Multivariate analyses revealed that presence of two or more comorbidities, being married, having an annual personal income of less than 25,000 US dollars, not having attained a high-school diploma, and having been treated with external fixation with or without limited internal fixation were significantly related to poorer results as reflected by at least two of the five primary outcome measures.

CONCLUSIONS

At more than three years after the injury, pilon fractures can have persistent and devastating consequences on patients' health and well-being. Certain social, demographic, and treatment variables seem to contribute to these poor outcomes.

Pelvic fracture in geriatric patients: a distinct clinical entity

BACKGROUND

The purpose of this study was to describe differences in demographics, injury pattern, transfusion needs, and outcome of pelvic fractures in older versus younger patients.

METHODS

This was a retrospective registry review of all patients with pelvic fractures admitted directly from the scene between January 1998 and December 1999.

RESULTS

We cared for 234 patients with pelvic fractures during the study period. Mean age was 37.2 years, 51% were men, and mean Injury Severity Score (ISS) was 19. Overall mortality was 9%. Eighty-three percent were under the age of 55 years and 17% were older than 55 years. Severe pelvic fractures (AP3, LC3) were more common in young patients (p < 0.05). Admitting systolic blood pressure was lower and heart rate higher, although ISS was not different between the two age groups. Older patients were 2.8 times as likely to undergo transfusion (p < 0.005), and those undergoing transfusion required more blood (median, 7.5 units vs. 5 units). Older patients underwent angiography more frequently and were significantly more likely to die in the hospital even after adjusting for ISS (p < 0.005). This was most marked with ISS 15 to 25. Lateral compression (LC) fractures occurred 4.6 times more frequently in older patients than anteroposterior (AP) compression, and 8.2 times more frequently in those older patients undergoing transfusion as compared with AP compression. Ninety-eight percent of LC fractures in older patients were minor (LC1,2). However, older patients with LC fractures were nearly four times as likely to require blood compared with younger patients.

CONCLUSION

In older patients, pelvic fractures are more likely to produce hemorrhage and require angiography. Fracture patterns differ in older patients, with LC fractures occurring more frequently, and commonly causing significant blood loss. The outcome of older patients with pelvic fractures is significantly worse than younger patients, particularly with higher injury severity. Recognition of these differences should help clinicians to identify patients at high risk for bleeding and death early, and to refine diagnostic and resuscitation strategies.

Helmet hazards. Do's & don'ts of football helmet removal

EMS providers must use extreme caution when evaluating and treating an unconscious football player, especially when the extent of the injury remains unknown. Suspect any unconscious football player has an accompanying spinal injury until proven otherwise. If the football player isn't breathing or the possibility of respiratory arrest exists, it's essential that certified athletic trainers and EMS providers work quickly and effectively to remove the face mask and administer care. In most situations, the helmet doesn't need to be removed in the field. Proper management of head and neck injuries includes leaving the helmet in place whenever possible, removing only the face mask from the helmet and developing a plan to manage head- and neck-injured football players using well-trained sports medicine and EMS providers. EMS agencies should work with their local high school or college athletic trainers to practice these removal techniques prior to the start of the football season.

Short-term wound complications after application of flaps for coverage of traumatic soft-tissue defects about the tibia. The Lower Extremity Assessment Project (LEAP) Study Group

BACKGROUND

The purpose of the present study was to compare the rate of short-term wound complications associated with rotational flaps and that associated with free flaps for coverage of traumatic soft-tissue defects about the tibia.

METHODS

Of 601 patients prospectively enrolled in a multicenter study of high-energy trauma of the lower extremity, 190 patients (195 limbs) required flap coverage and had six months of follow-up. The injury data included the ASIF/OTA classification of the tibial fracture and the soft-tissue injury and the functional status of the neurovascular and muscular structures of the soft-tissue compartments at the time of soft-tissue coverage. The treatment data consisted of the type of flap, the timing of the flap coverage, and the type of fixation. The patient characteristics that were recorded included the age, gender, presence of comorbidities, and smoking status at the time of the injury. Short-term complications included wound infection, wound necrosis, and loss of the flap within the first six months after the injury.

RESULTS

Eighty-eight limbs were treated with a rotational flap, and 107 limbs were treated with a free flap. Overall, complications occurred after fifty-three (27 percent) of the 195 flap procedures; forty-six (87 percent) of the fifty-three required operative treatment. The two treatment groups were similar with respect to age, gender, comorbidities, preinjury smoking status, ASIF/OTA classification of the fracture, and prevalence of vascular injury requiring repair (p>0.05). There were two important differences between the two groups. First, three of the four leg compartments--that is, the anterior, lateral, and deep posterior compartments--were more likely to be functionally compromised in the free-flap group than in the rotational flap group (p<0.05), suggesting that patients in the free-flap group had sustained more severe soft-tissue injuries. Second, the Injury Severity Score was significantly higher (p = 0.001) in the rotational flap group (mean, 14 points) than in the free-flap group (mean, 11 points), suggesting that patients in the former group had sustained more substantial total body trauma. Overall, there were no significant differences between the two groups with respect to the complication rates. However, among those with the most severe grade of underlying osseous injury (an ASIF/OTA type-C injury), 44 percent of the limbs that were treated with a rotational flap had a wound complication compared with 23 percent of the limbs that were treated with a free flap (p = 0.10). To control for any differences between the two groups with respect to the severity of the injury, the treatment methods, or the patient characteristics, multivariate regression modeling was performed. An interaction effect between the type of flap and the severity of the underlying osseous injury demonstrated significance (p<0.05) after controlling for other factors. Of the limbs that sustained an ASIF/OTA type-C osseous injury, those that were treated with a rotational flap were 4.3 times more likely to have a wound complication requiring operative intervention than were those treated with a free flap. No significant difference in the rate of complications was detected with respect to the type of flap used for the limbs that had lower-grade osseous injuries.

CONCLUSIONS

We found that use of a free flap to treat limbs with a severe underlying osseous injury was significantly less likely to lead to a wound complication requiring operative intervention than was use of a rotational flap.

External fixation as a bridge to intramedullary nailing for patients with multiple injuries and with femur fractures: damage control orthopedics

BACKGROUND

The advantages of early fracture fixation in patients with multiple injuries have been challenged recently, particularly in patients with head injury. External fixation (EF) has been used to stabilize pelvic fractures after multiple injury. It potentially offers similar benefits to intramedullary nail (IMN) in long-bone fractures and may obviate some of the risks. We report on the use of EF as a temporary fracture fixation in a group of patients with multiple injuries and with femoral shaft fractures.

METHODS

Retrospective review of charts and registry data of patients admitted to our Level 1 trauma center July of 1995 to June of 1998. Forty-three patients initially treated with EF of the femur were compared to 284 patients treated with primary IMN of the femur.

RESULTS

Patients treated with EF had more severe injuries with significantly higher Injury Severity Scores (26.8 vs. 16.8) and required significantly more fluid (11.9 vs. 6.2 liters) and blood (1.5 vs. 1.0 liters) in the initial 24 hours. Glasgow Coma Scale score was lower (p < 0.01) in those treated with EF (11 vs. 14.2). Twelve patients (28%) had head injuries severe enough to require intracranial pressure monitoring. All 12 required therapy for intracranial pressure control with mannitol (100%), barbiturates (75%), and/or hyperventilation (75%). Most patients had more than one contraindication to IMN, including head injury in 46% of cases, hemodynamic instability in 65%, thoracoabdominal injuries in 51%, and/or other serious injuries in 46%, most often multiple orthopedic injuries. Median operating room time for EF was 35 minutes with estimated blood loss of 90 mL. IMN was performed in 35 of 43 patients at a mean of 4.8 days after EF. Median operating room time for IMN was 135 minutes with an estimated blood loss of 400 mL. One patient died before IMN. One other patient with a mangled extremity was treated with amputation after EF. There was one complication of EF, i.e., bleeding around a pin site, which was self-limited. Four patients in the EF group died, three from head injuries and one from acute organ failure. No death was secondary to the fracture treatment selected. One patient who had EF followed by IMN had bone infection and another had acute hardware failure.

CONCLUSION

EF is a viable alternative to attain temporary rigid stabilization in patients with multiple injuries. It is rapid, causes negligible blood loss, and can be followed by IMN when the patient is stabilized. There were minimal orthopedic complications.

Reamed femoral nailing in patients with multiple injuries. Adverse effects of tourniquet use

Limb reperfusion after tourniquet ischemia causes pulmonary microvascular injury. Similarly, microembolization, like that associated with reamed femoral nailing, can induce pulmonary microvascular injury. Both processes result in increased pulmonary capillary membrane permeability and edema. However, the association between femoral nailing followed by tourniquet ischemia and clinical lung injury has not been described. The authors reviewed 72 patients with femoral shaft fractures and tibial or ankle fractures requiring internal fixation between 1987 and 1993. All femoral shaft fractures were treated with reamed intramedullary nails. Patients were divided into groups, based on whether the tibial or ankle injury was managed surgically with (Group T, 34 patients) or without (Group NT, 38 patients) a tourniquet. Group T was subdivided based on tourniquet time: T1, less than or equal to 90 minutes; T2, greater than 90 minutes. Groups were matched for injury severity. Group NT had fewer ventilator dependent days and intensive care days than Group T (NT: ventilator dependent days, 2.5 +/- 5.2; intensive care days, 3.9 +/- 6.5; T: 5.1 +/- 6.4; intensive care days, 6.7 +/- 6.6). Ventilator dependent days and intensive care days increased with increasing tourniquet time (T1: ventilator dependent days, 3.2 +/- 3.6; intensive care days, 5.4 +/- 4.6; T2: ventilator dependent days, 7.5 +/- 8.5; intensive care days, 8.5 +/- 8.5), suggesting that in patients with multitrauma, combining reamed femoral nailing with fracture fixation under tourniquet control increases pulmonary morbidity. Further investigation to measure pulmonary injury associated with ischemia reperfusion and intramedullary nailing in patients with multitrauma is warranted.