We performed trochanteric osteotmy with anterior transtrochanteric slide in seven cases; four cases of revision arthroplasty, two cases of Sugioka's transtrochanteric rotational osteotmy and one case of Sugioka's transtrochanteric valgus osteotmy. Alth ough one case showed nonunion after operation, none of the cases demonstrated proximal migration of the trochanteric fragment.
This osteotomy method is performed without release of the attachment of the vastus lateralis; therefore, compared with standard osteotmy, it decreases the incidence of proximal migration of the trochanteric fragment which causes abductor muscle weakness.
