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Triple Innominate Osteotomy for DDH
http://orthopedicsvideos.blogspot.com/2010/01/triple-innominate-osteotomy-for-ddh.html
Salter’s osteotomy of the innominate bone redirects the entire acetabulum so that its roof “covers” the femoral head anteriorly and superiorly.
Advantages:
– anterolateral coverage of the femoral head,
– lengthening of the extremity (possibly shortened by the avascular process), and
– avoidance of a second operation for plate removal.
Disadvantages:
– inability to obtain proper containment of the femoral head, especially in older children
– increase in acetabular and hip joint pressure that may cause further avascular changes in the femoral head; and
– an increase in leg length on the operated side compared with the normal side that may cause a relative adduction of the hip and uncover the femoral head. 
Remove a full-thickness graft from the anterior part of the iliac crest, and trim it to the shape of a wedge. Make the base of the wedge about as wide as the distance between the anterior superior and anterior inferior iliac spines
The following are prerequisites for the success of this operation:
In a cadaver study, Birnbaum et al. identified several structures that are at risk of injury during a Salter innominate osteotomy, as follows:
Thanks for the information.
exellent information specially regarding complications of the procedure