Rationale
Open fractures involve:
Contamination
Devitalised tissue
Compromised vascularity
Delayed coverage leads to:
Increased bacterial colonisation
Biofilm formation
Higher infection and nonunion rates
Core Principle
Early soft tissue coverage = better outcomes
Ideal timing:
Within 72 hours (“golden window”)
Timing Categories
1. Early Coverage (<72 hours)
Preferred approach
Benefits:
Lower infection rates
Reduced osteomyelitis
Improved flap survival
Better bone healing
2. Delayed Coverage (3–7 days)
Acceptable in selected cases
Indications:
Need for repeated debridement
Borderline tissue viability
Patient stabilisation (polytrauma)
3. Late Coverage (>7 days)
Generally not recommended
Risks:
Increased infection
Chronic osteomyelitis
Higher flap failure rates
Poor functional outcomes
Factors Influencing Timing
Local Factors
Degree of contamination
Soft tissue viability
Zone of injury
Systemic Factors
Haemodynamic stability
Associated injuries
ICU status
Surgical Factors
Availability of orthoplastic team
Facility capability
Surgical planning readiness
Relationship with Fix and Flap
Early coverage is most effective when combined with:
Stable fixation
Adequate debridement
“Fix and flap” within 72 hours = gold standard
When to Delay Coverage
Ongoing infection
Inadequate debridement
Unclear tissue viability
Patient not medically optimised
Role of Temporary Measures
Negative Pressure Wound Therapy (NPWT)
Temporary dressings
Used as a bridge, not a substitute for early coverage
Complications of Delayed Coverage
Deep infection
Nonunion
Chronic osteomyelitis
Flap failure
Increased need for amputation
Prognosis
Early coverage → significantly improved outcomes
Delay beyond 7 days → marked increase in complications
Pits & Pearls
Timing is critical, but only after adequate debridement
Early coverage reduces infection more than antibiotics alone
NPWT is a temporary solution, not definitive treatment
Always reassess tissue viability before coverage
Pitfalls
Covering non-viable tissue
Delaying coverage unnecessarily
Relying too long on NPWT
Poor coordination between teams