Questions
3–5 questions per university paper
Difficulty
Medium
Importance
High yield for clinical rotations and anatomy/ortho exams
Overview
Fractures represent a critical segment of orthopedics, involving the structural failure of bone tissue due to mechanical stress. Mastering classification, healing, and complication management is essential for clinical decision-making and remains a high-yield topic for both theory examinations and viva voce assessments.
Fracture Classification
Fractures are categorized based on their mechanism, soft tissue involvement, and fracture pattern. Proper classification is crucial for determining treatment protocols and prognosis.
- Open vs Closed: Based on skin integrity
- Transverse, Oblique, and Spiral: Based on fracture geometry
- Comminuted: Bone broken into more than two pieces
- Greenstick: Incomplete fracture common in pediatric populations
- Salter-Harris: System for classifying physeal (growth plate) injuries
Stages of Fracture Healing
Bone healing is a dynamic physiological process involving biological repair rather than simple scarring. Understanding these phases is vital for assessing the timing of mobilization and rehabilitation.
- Hematoma Formation: Occurs immediately post-injury
- Inflammation: Recruitment of cytokines and macrophages
- Soft Callus Formation: Chondrocytes create a fibrocartilaginous scaffold
- Hard Callus Formation: Endochondral ossification converts scaffold to woven bone
- Remodeling: Osteoclasts and osteoblasts restore original bone structure over months
Complications of Fractures
Complications can be early or late, ranging from localized issues to systemic emergencies. Identifying these early is a core competency for any medical professional managing trauma.
- Compartment Syndrome: Surgical emergency due to high pressure in fascial spaces
- Fat Embolism Syndrome: Common in long bone fractures
- Malunion: Bone heals in a non-anatomical position
- Non-union: Failure of bone ends to knit after 6-9 months
- Avascular Necrosis (AVN): Death of bone tissue due to disrupted blood supply
Exam Tip
Always draw simple, labeled sketches of Salter-Harris classifications or fracture types to significantly boost your marks in theory papers.
Common Mistakes
- Confusing primary healing (cortex-to-cortex) with secondary healing (callus formation)
- Failing to mention the '5 Ps' (Pain, Pallor, Paresthesia, Pulselessness, Paralysis) when discussing Compartment Syndrome
- Ignoring the anatomical naming convention for fracture displacements
More Revision Notes
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