Đau mạn tính ở người cao tuổi có thoái hóa khớp gối nguyên phát

To describe the characteristics of chronic pain of knee and some related factors in older people with primary knee osteoarthritis. Subjects and methods: A cross-sectional descriptive study on 114 patients aged  60 years old diagnosed with primary knee osteoarthritis according to the criteria of ACR 1991 being treated at the National Hospital of Geriatrics from April to August, 2022. Results: Mean age was 74.18.7, women accounted for 78.9%, 81.6% of patients had degenerative joint disease on both sides of the knee. The prevalence of chronic knee pain was found in 102 study subjects (89.5%). 59.8% of patients had mechanical pain; 68.6% of patients had knee pain lasting more than 6 months. The average pain score according to the VAS scale when active was 5.52.0 and at rest was 3.82.0. Conclusion: the proportion of older knee osteoarthritis patients with chronic knee pain accounted for 89.5%; female have a higher prevalence of knee chronic knee pain than male. There was no association between chronic knee pain and characteristics of: age, daily activity living (ADL), instrumental activity daily living (IADL) and duration of knee osteoarthritis.