Open leg fracture: first aid

An open leg fracture is a fracture of the tibia or ankle joint in which the fracture zone communicates with the external environment through a defect in the skin and soft tissue. This injury combines bone trauma and a contaminated wound, therefore carrying a high risk of infectious complications and requiring standardized emergency care and early involvement of a specialized orthoplastic team. [1]

The key to reducing mortality and disability is early antibacterial prophylaxis, meticulous surgical debridement with copious irrigation, stable fixation of fragments, and timely soft tissue closure. These steps are performed according to clear standards harmonized by major guidelines and quality systems. [2]

The previous "6-hour rule" for emergency treatment has been revised: in the absence of massive contamination and ischemia, scheduling within 24 hours is acceptable, while for severe, high-grade open injuries, earlier scheduling is recommended. This allows for safer intervention by an experienced team and improves outcomes. [3]

For long-term results, rehabilitation protocols, thrombosis prevention, pain control and psychological support are equally important, since open fractures often affect a socially active group and significantly affect the quality of life. [4]

Terms and classification

The most widely used scale is the Gustilo-Anderson classification, which divides open fractures into types I, II, and III with subtypes IIIA, IIIB, and IIIC based on wound size, degree of soft tissue damage, contamination, and vascular component. This classification correlates with the risk of infection and guides the selection of debridement volume, dressing, and antibacterial regimen. [5]

Modern standards emphasize an orthoplastic approach: treatment is performed jointly by a traumatologist and a plastic surgeon, synchronizing bone stabilization and soft tissue closure. This "orthoplastic" approach is recognized as the standard for severe open fractures and is incorporated into regulatory documents. [6]

In addition to Gustilo, the team uses clinical descriptions of contamination, the degree of devascularization, the presence of bone exposure and defects, and documents the neurovascular status before and after each procedure. This reduces diagnostic errors and helps plan the procedures correctly. [7]

When planning surgical tactics, the area of damage, tissue viability, the possibility of primary skin closure, and the need for flap grafting are also taken into account. The higher the Gustilo category and the greater the tissue deficit, the more aggressive the debridement strategy and the earlier definitive closure is required. [8]

Table 1. Gustilo-Anderson classification for open fractures

Type	Main criteria	Tactical accents
I	Skin wound up to 1 cm, minimal contamination and damage to soft tissues	Early antibiotic prophylaxis, wound treatment, stable fixation
II	A wound larger than 1 cm without massive crushing	More irrigation volume, thorough revision, evaluation for the possibility of primary closure
IIIA	Severe soft tissue damage, but bone protection by soft tissue is possible	Early stabilization, preparation for coating, extended antibiotic therapy
IIIB	Extensive crushing with bone exposure, flaps are needed	Orthoplasty tactics, early coverage plan
IIIC	Any wound with vascular injury requiring reconstruction	Emergency vascular care, priority for limb viability
Source: classical descriptions and modern reviews. [9]

Disease codes

In the International Classification of Diseases, Tenth Revision, block S82 covers fractures of the tibia, including the ankle joint, with details by level and course. The specification of "open fracture" is specified by additional symbols in national modifications, which also take into account the Gustilo types. [10]

In the International Classification of Diseases, Eleventh Revision, the NC92 group details tibia fractures, including upper, middle, and lower segment variants, isolated malleolus fractures, multiple injuries, and complex forms. This structure is used for outcome analysis and patient routing. [11]

Table 2. Codes for fractures of the tibia and ankle region

Classifier	Block	Examples of subheadings
ICD-10	S82	Fracture of the diaphysis of the tibia, fracture of the lower part of the tibia, multiple fractures of the tibia
ICD-11	NC92	Fracture of the tibial shaft, fracture of the distal tibia, fracture of the medial or lateral malleolus, complex fractures of the ankle joint
Sources on code structure. [12]

Epidemiology and significance

Tibial fractures are among the most common long bone fractures in adults and frequently occur in traffic accidents and falls from height. The proportion of open fractures among tibia fractures is significantly higher than that of other long bones, due to the small amount of soft tissue covering the anterior region. [13]

Open fractures are characterized by a high rate of infection, nonunion, and the need for reoperation, especially in types IIIA-IIIC and with delayed soft tissue coverage. Timely collaboration between traumatologists and plastic surgeons reduces the likelihood of amputation and improves limb function. [14]

Early antibacterial prophylaxis within the first hour of injury significantly reduces the risk of wound infection and osteomyelitis, regardless of the subsequent choice of fixation method. This process is an element of emergency care and should not be delayed. [15]

The timing of surgical debridement and soft tissue closure is also critical: the faster adequate debridement and reliable coverage are achieved, the lower the risk of infection and the better the functional outcomes and costs to the healthcare system. [16]

Causes and mechanisms

Open tibia fractures are most often associated with high-energy impacts: direct impact with a bumper, crush injury, falls from height, and sports accidents. These mechanisms create combined damage to the skin, muscles, fascia, blood vessels, and nerves, increasing the risk of contamination and necrosis. [17]

The mechanism of injury is important for prognosis: contaminated stab wounds from agricultural environments are more likely to be contaminated with clostridial bacteria, whereas urban accidents are more likely to be contaminated with mixed flora associated with cutaneous and environmental sources. This influences the initial choice of antibiotics. [18]

The extent of soft tissue damage determines the feasibility of primary closure and the choice of fixation. In cases of extensive defects and bone exposure, flap grafting with local or free tissue will be required, necessitating an early consultation with a plastic surgeon. [19]

Vascular injury is specific to subtype IIIC and requires immediate restoration of blood flow or a decision to salvage the limb. Proper prioritization of stages and teamwork directly determine the outcome. [20]

Risk factors for complications

Severe Gustilo categories, significant contamination, extensive soft tissue necrosis, delayed antibiotic administration, and delayed wound closure increase the risk of deep infection and nonunion. These factors are targets for quality protocols. [21]

Long-term use of a temporary external fixator with late conversion to internal fixation increases the risk of infection, so early conversion is recommended when the soft tissue condition is favorable. Timing depends on the clinical situation and safety. [22]

Poor blood supply, diabetes, smoking, and low protein-energy status impair healing, increasing the risk of nonunion. These modifiable factors require early correction and nutritional support. [23]

Repeated revisions without a clear coverage and stabilization plan are also associated with worse outcomes. Current standards recommend planning stages to minimize the number of surgeries and the time to definitive coverage. [24]

Pathogenesis

A contaminated wound, combined with exposed bone, leads to bacterial adhesion and biofilm formation on necrotic tissue and implants. The longer the exposed surface remains without a viable covering, the higher the risk of deep infection. Debridement with excision of non-viable tissue is a key biological measure. [25]

Irrigation with low-pressure saline mechanically removes contaminants without causing additional tissue trauma. Studies have shown that saline is superior to soap solutions, and low pressure is comparable to or superior to high pressure in terms of outcomes. [26]

Stable fixation reduces interfragmentary mobility and improves fracture zone perfusion, thereby facilitating the immune system's fight against microbes and increasing the likelihood of fusion. This is a common biomechanical premise of modern protocols. [27]

Early soft tissue coverage restores the barrier, reduces the bacterial load, and creates conditions for osteogenesis. Delayed closure increases the risk of infection and nonunion, especially in large defects. [28]

Symptoms and clinical signs

Classic signs include a wound in the fracture site, visible or palpable bone contact, bleeding, pain, swelling, deformity, and abnormal mobility. Assessment of neurovascular status is mandatory and is repeated after each manipulation and splinting. [29]

The presence of odor, dirt, grass or soil particles, clothing, and glass in the wound indicates a high degree of contamination and requires extensive debridement, culture, and antibiotic regimen, including anaerobic coverage if fecal or soil contamination is suspected.[30]

Signs of limb ischemia, increasing tension pain, and hypoesthesia indicate vascular injury or compartment syndrome and require immediate response. Any delay worsens the prognosis for limb salvage. [31]

Many patients have concomitant injuries, so the assessment algorithm follows trauma systems with priority given to stabilizing vital functions and parallel limb immobilization.[32]

When to seek medical attention

Any open wound over a deformed limb following an injury warrants immediate emergency medical attention, with no attempts at flushing or aggressive surface treatment. Initial treatment outside the hospital is limited to covering the wound with a sterile drape and immobilization. [33]

Signs of ischemia, massive contamination, severe tension pain, increasing swelling, and signs of shock require transport to a center with orthoplastic surgery. This increases the chance of preserving function and limb function. [34]

Even with a minor wound and tolerable pain, an open fracture remains a surgical emergency in which early antibiotics and timely intervention determine the outcome. Self-medication and delayed examination are contraindicated. [35]

Photographic documentation of the wound at the admission stage is useful for planning, but should not delay the initiation of intravenous antibacterial therapy.[36]

Diagnostics

1. Initial assessment of the condition, pain relief, bleeding control, segment immobilization, documentation of neurovascular status, early intravenous antibiotics without delaying transport. [37]
2. Laboratory panel for trauma: complete blood count, inflammation markers, coagulogram, blood type and Rh factor, creatinine for drug dosing, blood gas composition if necessary. [38]
3. Visualization: Radiography of the affected segment in two projections, including adjacent joints. In cases of complex fracture lines and when planning treatment, computed tomography is performed; magnetic resonance imaging is used primarily to assess the ligamentous apparatus and musculotendinous defects, as indicated. [39]
4. Surgical planning: team review of images, determination of excision volume, choice of fixation, need for flap plastic surgery and timing of closure, and assessment of the need for vascular reconstruction. [40]

Table 3. Survey methods and objectives

Method	Task	When shown
Radiography in two projections	Confirmation of fracture, assessment of displacement	To all patients at the start
Computed tomography	Precise geometry, fixation planning	Complex lines, intra-articular variants
Magnetic resonance imaging	Soft tissues, ligaments and tendons	According to indications after stabilization
Doppler or angiography	Search for vascular damage	Suspected ischemia
Photo documentation	Coverage planning	In the admissions department according to the standard
Standards for the selection of methods and stages. [41]

Differential diagnosis

It is important to differentiate an open fracture from shallow incised wounds over a closed fracture, for which bone probing and visualization are essential. If in doubt, the patient is treated as if it is an open fracture until communication with the fracture site is ruled out. [42]

Vascular damage is differentiated from functional spasm and hematoma compression; at the slightest doubt, a perfusion protection strategy and early consultation with a vascular surgeon are chosen. This is especially important for subtype IIIC. [43]

Compartment syndrome is distinguished from simple post-traumatic edema by the combination of tension pain, which increases with passive finger movements, and neurological symptoms. Delayed recognition leads to muscle necrosis and severe disability. [44]

For deeply contaminated wounds, the possibility of concomitant damage to tendons and nerves is taken into account, which determines the extent of reconstruction and the time frame for restoration of function. [45]

Treatment: from the first minute to recovery

Emergency care in the prehospital and admission departments. Early intravenous antibiotics are recommended as soon as possible, preferably within the first hour of injury, along with wound coverage with a moist saline dressing under an occlusive dressing, gentle repositioning of the limb axis, and splinting. Flushing with a jet is not performed before surgery. [46]

Antibiotic prophylaxis. For types I-II, intravenous cefazolin is initiated; for type III, gram-negative bacterial coating is added. If there is a risk of clostridial contamination in agricultural injuries, an antianaerobic drug is added. Duration of treatment is usually up to 24 hours for types I-II and up to 72 hours for type III, or until the wound is hermetically sealed, depending on local protocol. [47]

Tetanus prophylaxis. Immunization plays a key role, while antibiotics are not used for the prevention of tetanus per se. The decision to administer toxoid and immunoglobulin depends on the vaccination status and the nature of the wound. [48]

Surgical debridement and irrigation. Current recommendations are moving away from the strict "6-hour rule" in favor of performing excision and debridement within 12-24 hours by an experienced team, and as soon as possible in cases of severe contamination and ischemia. Irrigation is performed with low-pressure saline; soap solutions have not shown any advantage. [49]

Fracture stabilization. The choice of method depends on the level and nature of the fracture and the condition of the soft tissues. Temporary external fixation is useful in cases of polytrauma and severe soft tissue injuries, with subsequent early conversion to internal fixation if the tissue condition is favorable. For diaphyseal tibial fractures, locked intramedullary fixation is preferred, having demonstrated a lower need for repeat interventions compared to long-term external fixation. [50]

Soft tissue closure. Whenever possible, skin defects are closed during the initial treatment. If this is unsafe, definitive closure is performed as soon as possible, preferably within 7 days. Bone exposure often requires flap surgery with the assistance of a plastic surgeon. [51]

Rehabilitation and thrombosis prevention. After stabilization, early mobilization begins within acceptable limits, along with breathing exercises, venous thrombosis prevention, and training in dressing care. Emphasis is placed on restoring support and function within the limits agreed upon with the surgeon. [52]

Table 4. Initial antibiotic prophylaxis regimens and duration

Scenario	Recommended base coat	Duration according to standards
Type I-II	Cefazolin intravenously; if intolerant, clindamycin or vancomycin according to local protocol	Up to 24 hours
Type III	Cefazolin plus an anti-gram-negative agent according to a local protocol	Up to 72 hours or until the wound closes
Agricultural wound, fecal or soil contamination	Add an anti-clostridial drug	According to the Type III scenario
Confirmed methicillin-resistant Staphylococcus aureus	Add an antistaphylococcal drug according to the protocol	According to scenario type I-III
Based on systematic recommendations and protocols. [53]

Table 5. Tetanus prophylaxis for injuries

Vaccination status	Contaminated wound	Clean wound	Note
Full course and booster less than 5 years ago	Not required	Not required	Observation
Full course, booster 5-10 years ago	Anatoxin	Consider anatoxin	Around the clinic
Unknown or incomplete course	Anatoxin plus immunoglobulin	Anatoxin	Without the use of antibiotics to prevent tetanus
Key points on immunization. [54]

Table 6. Irrigation, processing, fixation and coating - timing guidelines

Stage	Recommended period	Comment
The beginning of antibiotics	In the first hour	Does not delay transport
Surgical treatment	Within 12-24 hours, earlier in case of severe contamination and ischemia	Experienced team
Primary wound closure	If possible and safe	Otherwise, a temporary bandage
Definitive soft tissue coverage	Up to 7 days	In collaboration with a plastic surgeon
External fixation conversion	Early with favorable soft tissues	Reducing the risk of infection
Summary of regulations from modern guidelines. [55]

Table 7. Main complications and preventive measures

Complication	Risk factors	Prevention
Infection and osteomyelitis	Types IIIA-IIIC, antibiotic delay, late coating	Start antibiotics within the first hour, adequate treatment, early coverage
Nonunion	Extensive soft tissue defect, unstable fixation	Stable fixation, load control, nutritional support
Compartment syndrome	High energy trauma, edema	Early diagnosis, fasciotomy according to indications
Secondary operations	Long-term external fixation	Early conversion with safe tissues
Summary of modern reviews and practices. [56]

Prevention

Reducing road traffic injuries, adhering to safety regulations at work and in sports, and training in first aid reduce the incidence of severe open fractures. This is a strategic objective for public health systems. [57]

For patients with osteoporosis, bone mineral density correction and fall prevention are recommended, which reduces the risk of low-energy fractures. This includes nutrition, exercise, vision correction, and a safe home environment. [58]

At the trauma department level, complication prevention includes strict antibiotic protocols, monitoring of processing and coverage times, auditing of photo documentation, and repeated assessment of neurovascular status. These are outcome-related quality elements. [59]

Smoking cessation and glycemic control reduce the incidence of infectious complications and accelerate healing, so it is advisable to begin these measures already in the hospital. [60]

Forecast

The prognosis is determined by the Gustilo type, the time to antibiotics, the quality of the initial treatment, and the timing of soft tissue closure. If standards are followed, a significant proportion of patients return to independent walking and work. [61]

Severe injuries require more stages and have a higher risk of re-intervention, but early conversion of external fixation and priority to soft tissue coverage improve the chances of union and reduce the risk of infection.[62]

Long-term outcomes depend on the adequacy of rehabilitation and pain control. Monitoring and prevention of complications, including venous thrombosis and contractures, are critical in the first months. [63]

Even in unfavorable scenarios, orthoplastic technologies can preserve limbs and function if the treatment schedule and scope are followed. This is confirmed by modern reviews and guidelines. [64]

Answers to frequently asked questions

Is wound irrigation necessary before surgery?
No. At the prehospital stage, the wound is not flushed with a stream of water; it is covered with a saline occlusive dressing and transported to the center more quickly. Irrigation and treatment are performed in the operating room. [65]

When to start antibiotics?
As soon as possible, preferably within the first hour of injury. Delay increases the risk of infection, regardless of the severity of the injury. [66]

Is it true that treatment should be performed within the first 6 hours?
Current data does not support the universality of the "6-hour rule." In the absence of critical factors, a window of up to 12-24 hours is acceptable with the involvement of an experienced team, whereas in cases of severe contamination and ischemia, the "as soon as possible" principle applies. [67]

Should negative pressure therapy be used on open wounds?
For severe open lower extremity fractures, randomized trials have not shown improved functional outcomes compared with standard dressings, so the decision should be individualized. [68]

When to convert from external to internal fixation?
Early conversion with favorable soft tissue conditions is associated with a lower risk of infection compared to late conversion. Specific timing is determined individually. [69]