In 2016, the World Journal of Orthopedics (WJO) has published the 12^nd issue which containing 11 articles contributed by scientists worldwide. Among these comprehensive articles are (1) “Evaluation and treatment of internal impingement of the shoulder in overhead athletes”, a Minireviews by Keith T Corpus, MD, et al from the Department of Academic Training, Shoulder and Sports Medicine Service, Hospital for Special Surgery, United States; (2) “Extrinsic visual feedback and additional cognitive/physical demands affect single-limb balance control in individuals with ankle instability”, an Original Article by You-jou Hung, PT, MS, PhD, CSCS, et al from Department of Physical Therapy, Angelo State University, United States; and (3) “Glomus tumors of the fingers: Expression of vascular endothelial growth factor”, a Case Report by Sittisak Honsawek, MD, PhD, et al from Department of Biochemistry and Orthopaedics, Vinai Parkpian Orthopaedic Research Center, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thailand, etc. We invite you to peruse all 11 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 7, Issue 12, December 18, 2016.

Figure 1 The cover of the issue. Editorial Board Member of World Journal of Orthopedics, Sheng-Mou Hou, MD, MHSc, PhD, Professor, Department of Orthopedics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 11101, Taiwan

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, at: http://www.wjgnet.com/2218-5836/e-journal.htm.