An Editorial decision has been made to retract the manuscript, Feng C, et al. Modified Closing-Opening Wedge Osteotomy to Correct Kyphosis in Ankylosing Spondylitis. Med Sci Monit. 2019; 25:6532-6538. It has come to our attention that the method of modified closing opening wedge osteotomy is not an original procedure developed by the authors, but has previously been described by Boissière L, et al. Spine J. 2015;15(12):2574-82, and Gao R, et al. Spine J. 2015;15(9):2009-15, and Boachie-Adjei O, et al. Spine (Phila Pa 1976). 2006;31(4):485-92.