A Newly Modified Salter Osteotomy Technique for Treatment of Developmental Dysplasia of Hip That Is Associated with Decrease in Pressure on Femoral Head and Triradiate Cartilage

Table 2

The modified Severin classification for radiographic results.

Excellent	IA	CE angle > 19°, age 6 to 13 years; CE angle > 25°, age > 14 years.
Good	IB	CE angle 15° to 19°, age 6 to 13 years; CE angle 20° to 25°, age > 14 years.
	II	Moderate deformity of femoral head, femoral neck or acetabulum but otherwise same as grade I.
Fair	III	Dysplastic hip, no subluxation; CE angle < 20°, age > 14 years.
Poor	IV	Subluxation.
	V	Femoral head in false acetabulum.
	VI	Redislocation.

CE, center-edge.