Table 2 Inter-observer correlation (95% CI) of the alignment parameters on the EOS 3D system according to the posture of indexed lower extremity.

From: Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture

 

Inter-observer correlations (95% CI)

Anterior

Posterior

mFTA (°)

0.740 (0.617–0.823)

0.720 (0.589–0.809)

FEA (°)

0.984 (0.977–0.989)

0.982 (0.974–0.988)

FTR (°)

0.504 (0.271–0.662)

0.335 (0.023–0.547)

HKSA (°)

0.750 (0.633–0.830)

0.897 (0.848–0.930)

LDFA (°)

0.840 (0.765–0.891)

0.854 (0.785–0.900)

MPTA (°)

0.767 (0.657–0.841)

0.867 (0.804–0.909)

Femoral Torsion (°)

0.711 (0.575–0.803)

0.769 (0.660–0.843)

Tibial Torsion(°)

0.187 (− 0.194–0.447)

0.357 (0.055–0.562)

  1. 3D three-dimensional, CI confidence interval, mTFA mechanical femorotibial angle, FEA flexion–extension angle, FTR femorotibial rotation, HKSA hip-knee-shaft angle, LDFA lateral distal femoral angle, MPTA medial proximal tibial angle.
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