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Table 1 Age of onset, AI, ACE, FNSA and FNA stratified by LCEA classificationd

From: The lateral center-edge angle as radiographic selection criteria for periacetabular osteotomy for developmental dysplasia of the hip in patients aged above 13 years

Variable Classification of LCEA P
Grade I Grade II Grade III Grade IV
No. 104 40 76 54  
Age of onset, years 30.9 ± 7.6 28.8 ± 7.7 25.3 ± 8.8a 23.1 ± 8.3ab < 0.001
AI ° 20.4 ± 4.9 25.5 ± 5.1a 29.2 ± 5.8ab 36.5 ± 7.3ab < 0.001
ACEA° 14.8 ± 13.4 2.6 ± 12.1a −5.9 ± 13.4ab −18 ± 16.5abc < 0.001
FNA ° 24.9 ± 10.7 26.0 ± 14.0 27.7 ± 12.4 29.0 ± 13.4 0.190
FNSA ° 132.9 ± 7.6 134.1 ± 7.5 132.6 ± 6.3 135.0 ± 7.6 0.234
  1. ACEA: anterior central edge angle; AI: Tönnis acetabular index; LCEA: Lateral center-edge angle; FNA: femoral neck anteversion angle; FNSA: femoral neck-shaft angle
  2. aP < 0.05 versus grade I; bP < 0.05 versus grade II; cP < 0.05 versus grade III
  3. dData are expressed as mean ± SD unless otherwise specified