Childrens Orthopeadics 2 Flashcards
What are the stages of paediatric fractures?
- Pattern
- Anatomy
- Intra/extra-articular
- Displacement
- Salter-harris
What are the patterns of paediatric fractures?
- Transverse
- Oblique
- Spiral
- Comminuted
- Avulsion
Where do transverse, oblique, spiral and comminuted paediatric fractures happen?
middle 1/3 diaphysis
Where do avulsion paediatric fractures happen?
distal 1/3
What happens in primary bone healing?
- Heals by direct union
- No Callus formation
- The preferred healing pathway in intra-articular fracture as minimises risk of post traumatic arthritis
What are the stages of secondary bone healing?
- Bone healing by callus
1. Haematoma formation
2. Fibrocartilagenous callus formation
3. Bony callus formation
4. Bone remodelling - but remember physis
What are the types of displacement?
- Displaced
- Angulated
- Shortened
- Rotated
What does salter harris do?
Classification of physeal injuries (SALT)
What are the stages of Salter Harris?
- Physeal Separation
- Fracture traverses physis and exits metaphysis (Above)
- Fracture traverses physis and exits epiphysis (Lower)
- Fracture passes Through epiphysis, physis, metaphysis
- Crush injury to physis
What type of injury is most common and how does the risk of growth arrest increase?
- Risk of growth arrest increases from 1 -5
- Type 2 injuries most common
What is growth arrest?
- Injuries to the physis can cause growth arrest
- The location and timing is key
What happens in whole physis growth arrest?
limb length discrepancy
What happens in partial physis growth arrest?
angulation as the non affected side keeps growing
What is the treatment of growth arrest?
Aim is to correct the deformity
•Minimise angular deformity
•Minimise limb length difference
What are the options for limb length correction in growth arrest?
- Shorten the long side
2. Lengthen the short side
What are the options for angular deformity in growth arrest?
- Stop the growth of the unaffected side
2. Reform the bone (osteotomy)