Orthonotes
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A: infra-syndesmotic; B: at syndesmosis; C: supra-syndesmotic (Maisonneuve possible). Instability rises from A→C; C requires ORIF with syndesmotic fix...
SA (supination-adduction): lat avulsion → vertical medial fx. SER (supination-external rotation): ATFL → fibula at level → posterior → medial (most co...
33-A: extra-articular; 33-B: partial articular (e.g., Hoffa = B3); 33-C: complete articular. Articular types require anatomic joint reduction; fixatio...
I split lateral; II split+depression; III pure depression; IV medial; V bicondylar; VI metaphyseal-diaphyseal dissociation. Severity ↑ from I→VI; medi...
41-A extra-articular; 41-B partial articular; 41-C complete articular. Complements/updates Schatzker with alphanumeric consistency across regions.
Type I: 50° (most vertical → highest shear). Higher angle = higher shear → instability, nonunion risk; stronger fixation needed.
Stable: intact posteromedial buttress; Unstable: posteromedial comminution, reverse obliquity, subtrochanteric extension. Stable → DHS; Unstable → cep...
Types I–V: nondisplaced to highly comminuted/segmental by number/configuration of fragments. Most require IM nailing; higher types have longer healing...
I: inferior to fovea (non–weight-bearing); II: superior to fovea (weight-bearing). III: I/II with femoral neck fracture; IV: I/II with acetabular frac...
0: none; I: small butterfly; II: larger butterfly with ≥50% cortical contact. III: