"Epidemiology "
"Radiographic features "
"CT "
"type I: fracture of the secondary ossification centre near the patella tendon insertion"
"type II: fracture between the primary and secondary ossification centres"
"type III: fracture that traverses the primary and secondary ossification centres (most common type)"
"type IV: fracture through the entire physis"
"type V: avulsion of the periosteal sleeve"
"modifiers: A - nondisplaced and B - displaced"
"type 1: avulsion of the apophysis without injury to the tibial epiphysis"
"type 2: epiphysis is lifted cephalad and incompletely fractured"
"type 3: displacement of the proximal base of the epiphysis with the fracture line extending into the joint"
"Full range of motion is expected by 3 months, with a return to pre-injury level of activity thereafter."
"Recommended views include an AP and lateral knee radiograph. Optional views include an internal rotation view that brings the tibial tuberosity into profile, or a contralateral knee radiograph for comparison."
Expected headings
"Epidemiology "
"Associations"
"Radiographic features "
"Plain radiograph"
"CT "
"There are multiple classification systems with multiple modifiers. The most commonly used is the modified Ogden classification."