v4.1 Fusion X
Classification based on position of foot + force direction. Common: Supination-External Rotation (SER), Supination-Adduction (SA), Pronation-Abduction...
Hawkins classification I–IV based on displacement/dislocation. AVN risk increases with stage: I 90%. Urgent reduction and fixation critical to preserv...
Lisfranc joint = tarsometatarsal articulation; key stabilizer = Lisfranc ligament (medial cuneiform to 2nd MT base). Mechanism: axial load with planta...
AO 33 classification. Locking plate vs retrograde nail. Principles: joint first, then shaft. Complications: nonunion, malalignment, stiffness.
I lateral split, II split+depression, III depression, IV medial, V bicondylar, VI dissociation. Surgical principle: elevate, graft, raft screws, plate...
Tibia shaft → highest risk of compartment. Signs: pain out of proportion, stretch pain. ΔP
Elementary: PW, PC, AW, AC, Transverse. Associated: PC+PW, Trans+PW, T-type, AC+PHT, Both-column. Views: Judet + CT 3D. Approaches: KL (post), Ilioing...
AO 31-A: A1 simple, A2 comminuted, A3 reverse oblique. Implants: DHS for stable A1/A2, CMN for unstable A2/A3. TAD
Deforming forces: flex-abd-ER proximal; add distal. Implant: CMN gold standard. Reduction aids: Schanz, cerclage, clamps. Entry point crucial (pirifor...
Gold standard for adult diaphyseal femur. Reaming adds biology + bigger nail. Supine position, piriformis/trochanteric entry. Complications: fat embol...