Tibia & Fibula Fractures: NEET PG Essentials
1. Clinical Significance
Tibial shaft fractures are the most common long-bone fractures. Because the tibia has a large subcutaneous surface area, it is the most common site for open fractures.
2. High-Yield Classification & Features
| Fracture Type | Key Detail |
|---|---|
| Maisonneuve Fracture | Proximal fibular fracture associated with a syndesmotic injury and an unstable ankle. |
| Pilon Fracture | High-energy intra-articular fracture of the distal tibia; high risk of soft tissue complications. |
| Stress Fracture | Common in the “dreaded black line” zone (anterior cortex of the tibia); high risk of non-union. |
3. Examination & Management Pearls
- Compartment Syndrome: The most critical complication. Always suspect high-energy tibia fractures. Monitor for the “5 Ps” (Pain out of proportion, Pallor, Paresthesia, Pulselessness, Paralysis).
- Standard Treatment: Reamed Intramedullary (IM) Nailing is the gold standard for diaphyseal fractures.
- Gustilo-Anderson Classification: Used to grade open fractures (Type I to IIIc); dictates the timeline for antibiotic administration and surgical debridement.
- Syndesmotic Injury: If a fibular fracture is noted, always assess the integrity of the ankle joint and tibiofibular syndesmosis to rule out occult instability.
- Non-union: The distal third of the tibia is a watershed area with precarious blood supply, making it a common site for delayed union or non-union.