EDITORIAL

1. New Year's greeting and overview of World Journal of Orthopedics in 2021

MINIREVIEWS

1. Diabetic foot: Which one comes first, the ulcer or the contracture?

ORIGINAL ARTICLE

1. Evaluation of joint awareness after acetabular fracture: Validation of the Forgotten Joint Score according to the COSMIN checklist protocol
2. Interobserver and intraobserver agreement for Letournel acetabular fracture classification system using 3-dimensional printed solid models