الفهرس 
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Abstract
Summary
Lateral humeral condyle fracture is the second most common injury around the elbow, it accounts for 10–20% of all fractures of the elbow in children with a high incidence between 2 and 8 years.
. Two theories of mechanism of injury for these fractures exist, the first is the pull off theory in which avulsion of lateral condyle occurs at the origin of extensor muscles due to varus stress that is applied to extended elbow with the forearm supinated, the second is the push off theory in which falling outstretched hand leads to impaction of radial head into lateral condyle causing fracture.
These fractures are classified according to displacement by Weiss and Jakob into:
Type 1:displacement less than 2mm.
Type 2:displacement between 2 and 4 mm.
Type 3:displacement more than 4 mm.
These fractures have risk of complications including nonunion, malunion, ulnar nerve paresis, hypertrophic scar, avascular necrosis of ossific nucleus and angular deformity
Various treatment methods are recommended according to the degree of displacement, conservative ttt for type 1 in the form of above elbow splint and weekly follow up x ray for about four weeks, regarding type 2 and type 3 ,open reduction internal fixation is by k wires or lag screw is the treatment of choice
Although K-wire is the most common metallic implant, a plaster splint or cast is required for a period of immobilization, some authors suggest that screw fixation also promotes the union of fracture without significant complications , k wires are usually removed after four weeks, screw is usually removed after eight to twelve week.