Inclusion Criteria:  Having been diagnosed with type 2 diabetes mellitus for at least 5 years for study group, having no diagnosed type 2 diabetes mellitus or prediabetes for control group, Being able to count down 3 by 3 from a three-digit number, Volunteer to take part in the study.  Exclusion Criteria:  History of traumatic or inflammatory injury in the upper extremity, History of involving the upper extremity in the last year, Having rheumatological/inflammatory arthritis or deformity, Having a deformity caused by osteoarthritis in the upper extremity, Having a neurological problem affecting the upper extremity, Getting 23 points or less on the Mini-Mental Test.