Table 1.

Population characteristics

Population group	Whole series	Osteoarthritis	Posttraumatic	Developmental dysplasia of the hip	Avascular necrosis
Number of hips	233	41	27	88	77
Mean age (years)	42.6 (20 to 50)	44 (28 to 50)	43.1 (23 to 50)	41.9 (20 to 49)	43.7 (31 to 50)
Lengthening to be realized (mm)	6.8 (0 to 52)	3 (0 to 25)	8.7 (0 to 30)	10.7 (0 to 20)	4.3 (0 to 25)
Lateral correction (mm)	2.5 (−30 to 25)	2.3 (−20 to 20)	2.1 (0 to 12)	3.4 (−30 to 20)	1.7 (−12 to 25)
Femoral anteversion (°)	19 (−22 to 85)	14 (−14 to 50)	20 (−15 to 53)	26 (−22 to 85)	13 (−14 to 50)
Anteversion correction (°)	−4 (−70 to 37)	1.2 (−35 to 29)	−5 (−38 to 30)	−11.5 (−70 to 37)	1.4 (−35 to 29)