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Table 5 Evaluation of trochlea sulcus measurement by measuring the intraclass correlation coefficient

From: Radiographic measurement of the congruence angle according to Merchant: validity, reproducibility, and limits

Wiberg 3 patella

Sulcus measurement (°)

Intraclass correlation coefficient

CI 95%

Interobserver concordance

 Obs. 1/Obs. 2

0.922

0.787–0.963

 Obs. 1/Obs. 3

0.928

0.802–0.959

 Obs. 2/Obs. 3

0.941

0.842–0.958

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