Efficacy Evaluation of 3D Navigational Template for Salter Osteotomy of DDH in Children

Abstract

Background. The aim of this study is to retrospectively evaluate the efficacy of 3D navigational template for Salter osteotomy of DDH in children. Methods. Thirty-two consecutive patients with DDH who underwent Salter osteotomy were evaluated between July 2014 and August 2017, and they were divided into the conventional group ( $n=16$ ) and navigation template group ( $n=16$ ) according to different surgical methods. The corrective acetabular degrees, radiation exposure, and operation time were compared between the two groups. Results. No nerve palsy or redislocation was reported in the navigation template group. Compared with the conventional group, the navigation template group had the advantages of more accurate acetabular degrees, less radiation exposure, and shorter operation time ( $P<0.05$ ). Meanwhile, the navigation template group achieved a better surgical outcome than the conventional group (McKay, $P=0.0293$ ; Severin, $P=0.0949$ ). Conclusions. The 3D navigational template for Salter osteotomy of DDH is simple and effective, which could be an alternative approach to improve the Salter osteotomy accuracy and optimize the efficacy.