"type I: lateral split wedge tibial plateau fracture"
"type I A: main wedge plane is anterior to the virtual equator"
"type I P: main wedge plane is posterior to the virtual equator"
"type I A + P: there are at least two distinct planes, with one anterior and one posterior to the virtual equator"
"type II: lateral split wedge depression"
"type II A: main wedge plane is anterior to the virtual equator"
"type II P: main wedge plane is posterior to the virtual equator"
"type II A + P: there are at least two distinct planes, with one anterior and one posterior to the virtual equator"
"type III: pure lateral depression"
"type III A: area of the depression is anterior to the virtual equator"
"type III P: area of the depression is posterior to the virtual equator"
"type III A + P: there are at least two distinct areas of the depression, with one anterior and one posterior to the virtual equator"
"type IV: unicondylar medial tibial plateau fracture"
"type IV A: main wedge plane is anterior to the virtual equator"
"type IV P: main wedge plane is posterior to the virtual equator"
"type IV A + P: there are at least two distinct planes, with one anterior and one posterior to the virtual equator"
"type V: bicondylar tibial plateau fracture"
"type VI: bicondylar tibial plateau fracture with shaft dissociation"
Expected headings
"Interpretation"
"Virtual equator of the tibial plateau"
"Main wedge plane"
"Types V and VI are bicondylar fractures 1-3. For these, the modifiers will indicate which of the four quadrants contain a main wedge plane. The quadrants are: anterolateral (AL), anteromedial (AM), posterolateral (PL), and posteromedial (PM)."