## Fracture Classification Systems **Key Point:** The descriptive or morphological classification system categorizes fractures based on three fundamental criteria: bone continuity (complete vs. incomplete), location within the bone (epiphyseal, metaphyseal, diaphyseal), and relationship to the skin (closed vs. open). ### Major Fracture Classification Systems | Classification System | Primary Criteria | Clinical Use | Specificity | | --- | --- | --- | --- | | Descriptive (Morphological) | Continuity, location, skin relationship | General framework for all fractures | Universal, foundational | | AO/ASIF | Anatomical location + fracture pattern | Standardized documentation, research | High, location-specific | | Salter-Harris | Physis involvement in children | Pediatric fractures only | Epiphyseal fractures | | Gustilo-Anderson | Soft tissue injury severity | Open fractures only | Infection risk prediction | **High-Yield:** The descriptive classification is the foundational system taught first because it applies to ALL fractures regardless of bone or age. It answers three basic questions: 1. Is the fracture **complete** (bone fully separated) or **incomplete** (buckle, greenstick, stress)? 2. Where is it located — **epiphysis, metaphysis, or diaphysis**? 3. Is it **closed** (skin intact) or **open** (communicating with skin)? **Clinical Pearl:** While AO/ASIF provides more detailed anatomical classification for research and complex fractures, the descriptive system remains the universal starting point for fracture assessment in clinical practice. **Mnemonic:** **DLC** — **D**escriptive uses **L**ocation, **C**ontinuity, and skin Contact. 
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