SUMMARY
Open fractures are fractures in which the bone and fracture hematoma are exposed to the external environment through a breach in the skin.
They are associated with significant soft tissue injury and a high risk of infection, nonunion, and limb-threatening complications.
Prompt recognition, early antibiotic administration, and urgent surgical management are critical for optimal outcomes.
DEFINITION
An open fracture is defined as any fracture that has a direct communication with the external environment through a skin wound.
The size of the skin wound does not necessarily correlate with the severity of underlying soft tissue or bone injury.
Any fracture with an associated wound should be considered open until proven otherwise.
EPIDEMIOLOGY
Account for approximately 3–5% of all fractures
More common in:
High-energy trauma
Young adult males
Lower extremity involvement is more frequent than upper extremity involvement.
ETIOLOGY
MECHANISMS
High-energy trauma:
Motor vehicle collisions
Pedestrian accidents
Falls from height
Low-energy mechanisms:
Fragility fractures in elderly patients
Penetrating injuries
CLASSIFICATION
Gustilo–Anderson Classification
Type I
Wound <1 cm
Minimal soft tissue damage
Clean wound
Simple fracture pattern
Type II
Wound 1–10 cm
Moderate soft tissue injury
No extensive crushing or devitalization
Type III
High-energy injury
Extensive soft tissue damage, contamination, or comminution
Type IIIA
Adequate soft tissue coverage despite extensive injury
Type IIIB
Extensive soft tissue loss
Periosteal stripping
Bone exposure
Requires flap coverage
Type IIIC
Associated arterial injury
Requires vascular repair
CLINICAL PRESENTATION
LOCAL FINDINGS
Open wound with visible bone or deep tissue
Bleeding
Severe pain
Deformity and instability
Swelling and soft tissue compromise
SYSTEMIC FINDINGS
Hypovolemia or shock
Associated polytrauma
Signs of infection in delayed presentations
IMAGING
RADIOGRAPHS
Standard orthogonal views of the involved extremity
Evaluate:
Fracture pattern
Alignment
Bone loss
CT
Indicated for:
Intra-articular fractures
Complex fracture patterns
Preoperative planning
MRI
Not routinely required
Useful for:
Occult fractures
Soft tissue and ligamentous injury assessment
INITIAL MANAGEMENT (EMERGENCY SETTING)
Treat as an orthopaedic emergency
Principles:
Hemorrhage control
Sterile dressing over wound
Limb immobilization
Tetanus prophylaxis
ANTIBIOTIC THERAPY (ASAP)
Type I–II:
First-generation cephalosporin
Type III:
First-generation cephalosporin + aminoglycoside
Gross contamination:
Add penicillin (anaerobic coverage)
SURGICAL MANAGEMENT
IRRIGATION AND DEBRIDEMENT
Early surgical debridement is essential
Remove:
Devitalized tissue
Contaminants
Nonviable bone fragments
FRACTURE STABILIZATION
Options include:
External fixation
Internal fixation (ORIF)
Staged fixation depending on soft tissue condition
SOFT TISSUE MANAGEMENT
Primary closure (selected cases)
Delayed primary closure
Local or free flap reconstruction (Type IIIB)
POSTOPERATIVE MANAGEMENT
Continued antibiotic therapy (duration based on severity)
Serial wound inspections
Early motion when stability allows
Thromboprophylaxis
COMPLICATIONS
Infection
Osteomyelitis
Nonunion or delayed union
Compartment syndrome
Neurovascular injury
Limb loss
PROGNOSIS
Prognosis depends on:
Severity of soft tissue injury
Degree of contamination
Timing of antibiotics and debridement
Associated vascular injury
Type III fractures have significantly worse outcomes than Type I–II injuries.
HIGH-YIELD PEARLS
The size of the skin wound underestimates injury severity
Early antibiotics are more important than timing of surgery
Type IIIC fractures are limb-threatening injuries
Soft tissue management dictates outcome as much as fracture fixation