Osteotomy(redirected from Macewen's osteotomy)
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the surgical transection of bone to correct a deformity or to reposition a dislocation. Osteotomy can be linear, transverse, oblique, or curved. It is an open operation in which an incision just large enough to introduce the cutting instrument—an osteotome, chisel, saw, or ultrasonic osteotome—is made in the soft tissues under general or local anesthesia.