1 Department of Orthopaedics, Wuhan Pu'Ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 473 Hanzheng Street, Wuhan, 430033, China.
2 Department of Orthopaedics, The 306th Hospital of People's Liberation Army, No. 9 Anxiangbeili, Beijing, 100101, China.
3 Department of Orthopaedics, Wuhan Pu'Ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 473 Hanzheng Street, Wuhan, 430033, China. veteran-1972@sohu.com.
The authors declare that when writing their article [1] they referenced two previously published papers [2, 3]. Several sentences on pages 807, 808, and 813 were similar to sentences from these two previously published articles.