In 2018, the World Journal of Orthopedics (WJO) has published the 3^rd issue which containing 6 articles contributed by scientists worldwide. Among these comprehensive articles are (1) “Sacroiliac joint stability: Finite element analysis of implant number, orientation, and superior implant length”, an Original Article by Derek P Lindsey, MSc, Research Scientist, et al from the Research and Development, SI-BONE, Inc., United States; (2) “Complex knee injuries treated in acute phase: Long-term results using Ligament Augmentation and Reconstruction System artificial ligament”, an Original Article by John Gliatis, PhD, Assistant Professor, et al from Department of Orthopaedic, University Hospital of Patras Western Greece, Greece, etc. We invite you to peruse all 6 articles in this issue, as they present the latest research progress/findings and provide insightful comments in orthopedics that will guide basic research and clinical practice in these fields.

This journal is an open-access journal which allows free immediate access to all full-text articles. For details, please visit: Volume 9, Issue 3, March 18, 2018.

Figure 1 The cover of the issue. Editorial Board Member of World Journal of Orthopedics, Nigel Zheng, PhD, Professor, Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States

The WJO is a leading academic journal devoted to reporting the latest, cutting-edge research progress and findings of basic research and clinical practice in the field of orthopedics. It was launched on November 18, 2010 and is published monthly (12 issues annually) by BPG, the world's leading professional clinical medical journal publishing company.

We encourage orthopedists worldwide to submit manuscripts to the WJO describing their original basic or clinical research findings that are of high academic value and which report new diagnostic techniques or summarize their treatment experiences.

We invited the readers to download and read the E-Journal of this issue.