Analysis of spatial patellofemoral alignment using novel three-dimensional measurements based on weight-bearing cone-beam CT.

ABSTRACT:

Objectives

To propose a reliable and standard 3D assessment method to analyze the effect of weight-bearing (WB) status on the location of patella and clarify the diagnostic performance of 3D parameters for recurrent patellar dislocation (RPD) in WB and non-weight-bearing (NWB) conditions.

Methods

Sixty-five knees of RPD patients and 99 knees of controls were included. Eight landmarks, two lines and a coordinate system were defined on 3D bone models of knees based on weight-bearing CT and non-weight-bearing CT. The shift and tilt of patella in three orthogonal axes (X_shift, Y_shift, Z_shift, X_tilt, Y_tilt, Z_tilt) were evaluated.

Results

X_shift and Y_shift were significantly higher, Z

SUBMITTER: Chen Y 

PROVIDER: S-EPMC11695510 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature