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Table 3 Measurements of the patella before surgery and at the last follow-up

From: The morphology of patella changed significantly after soft tissue correction for children with recurrent patella dislocation

Measurement Affected side Unaffected side P Value
Diameter (mm) before surgery 3.34 ± 0.37 3.27 ± 0.39 0.53
Diameter (mm) at the last follow-up 3.75 ± 0.30 3.72 ± 0.37 0.74
Thickness (mm) before surgery 1.63 ± 0.32 1.71 ± 0.36 0.42
Thickness (mm) at the last follow-up 1.84 ± 0.33 1.94 ± 0.41 0.36
Wiberg-angle (°) before surgery 140.2 ± 14.3 141.8 ± 12.0 0.69
Wiberg-angle (°)at the last follow-up 141.6 ± 13.1 139.2 ± 10.2 0.51
  P = 0.75 P = 0.44  
Wiberg-index before surgery 0.74 ± 0.06 0.64 ± 0.04 < 0.01
Wiberg-index at the last follow-up 0.67 ± 0.05 0.65 ± 0.04 0.10
  P < 0.01 P = 0.64