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Fig. 3 | Journal of Experimental Orthopaedics

Fig. 3

From: Closed-leg standing long leg radiographs can be a useful tool to assess whether the joint line is parallel to the ground in restricted kinematic alignment total knee arthroplasty

Fig. 3

Plot of arithmetic hip-knee-ankle angle (HKA) against calculated joint line obliquity for the preoperative population included in this study, showing distribution by percentage of the nine Coronal Plane Alignment of the Knee (CPAK) phenotypes. The arithmetic HKA and joint line obliquity were calculated by the difference and sum of MPTA and LDFA as reported by MacDessi et al. [27]’s Coronal Plane Alignment of the Knee (CPAK) classification. Abbreviations: LDFA: lateral distal femoral angle; MPTA: medial proximal tibial angle

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