Clinical ImageCLINICAL IMAGE The groove sign Samuel G. Cook, DO; and Alan J. Bartholomew, DO Notes and Affiliations Notes and Affiliations Received: April 27, 2022 Accepted: May 30, 2022 Published: August 2, 2022 Samuel G. Cook, DO, Wright-Patterson AFB, 4881 Sugar Maple Drive, Ohio, 45433, OH, USA Alan J. Bartholomew, DO, Rheumatology Faculty, Department of Medicine, Wright Patterson Medical Center, Wright-Patterson AFB, OH, USA J Osteopath Med; 122(12): 641-641 https://doi.org/10.1515/jom-2022-0084