Skip to main content
Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Abnormal patellar sagittal spatial kinematics in patients with patellofemoral pain: an in vivo dynamic CT study

Fig. 2

3D knee joint model with bone landmarks and establishment of patellofemoral joint coordinate system. (A) Patella anatomical landmarks. Patellar reference point: center of gravity of the patella; PRPP: patellar ridge proxima point; PDP: patella distal pole; Long axis of the patella: the line between PRPP and PDP. PMP, patella medial pole. PLP, patella lateral pole. The short axis of the patella: the line between PMP and PLP. (B) Femur anatomical landmarks. LFC: lateral femoral condyle; MFC: medial femoral condyle point; Origin: the midpoint of the line connecting LFC and MFC; RA: Roman arch. (C) Establishment of patellofemoral joint coordinate system. The X0Y plane was established by the LFC, MFC, and RA points. A normal vector perpendicular to the X0Y plane was created based on the origin. The X0Z plane was created based on the LFC, MFC, and an arbitrary point on the normal vector

Back to article page

Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X