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. 2021 Jul 17;13:95–106. doi: 10.2147/ORR.S320372

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© 2021 Khalifa et al.

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Assessment in the sagittal plane (Lateral radiograph).

Notes: (A) defining the axes; s, sagittal; FMA, femoral mechanical axis; FAA, femoral anatomical axis; DFL, distal femoral line; PTL, proximal tibial line; TMA, tibial mechanical axis; TAA, tibial anatomical axis; (B) DFFA, distal femoral flexion angle; TS, tibial slope; (C) ACO, anterior condylar offset; PCO, posterior condylar offset; JLH, joint line height; Insall Salvati index = length of line B/ length of line A, Caton-Deschamps Index = length of line C/length of line D.