<prompt> Progression of congenital scoliosis is least likely in which of the following veebra anomalies?Fully segmented HemiveebraWedge veebraBlock veebraUnilateral unsegmented bar with Hemiveebra  <response>: Block veebra type of scoliosis has the best prognosis. The progression is slow and it can be corrected easily, whereas unilateral thoracic unsegmented type carries worst prognosis. Ref: Ohopaedic Surgery Essentials in Pediatrics By Kathryn E. Cramer, Susan A. Scherl, 2004, Page 65; Campbells Ohopaedics, 11th Edition, Page 2607. 