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Unformatted text preview: Late complications of fractures
Late complications of fractures Outlines
• Delayed unioun
Malunion Avascular necrosis
• Normally fractures unite within 2 to 5 months.
Average times for fracture healing
Upper limb Lower limb Callus visible 23 weeks 23 weeks union 46 weeks 812 weeks consolidation 68 weeks 1216 weeks Delayed Union
Delayed Union • a fracture that has not healed after a reasonable time • period (the time in which it was expected to heal) has passed. Delayed union means that there are no signs of beginning of union and the fragments are mobile 3 to 4 months after injury. • Signs of union: Callus formation, less mobility, less pain, and medullary canal formation. Delayed Union
4. Causes Poor blood supply
Severe soft tissue damage infection
• Excessive Periosteal stripping during internal fixation
• Imperfect splintage excessive traction excessive movement at fracture site • Over rigid fixation Delayed Union
• Signs: The fractured site is usually tender
Acute pain when the bone is subjected to stress
The fracture is not consolidated Xray: the fracture line remains visible little or no callus formation or periosteal reacrtion the bone ends are not sclerosed or...
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.
- Fall '11