Correlation of Sonographic Findings with Knee Joint Pain in Knee Osteoarthritis Patients.
- Author:
Hyo Jong KANG
1
;
Sang Bae LEE
;
Myeung Su LEE
;
Seung Jae HONG
;
Kyung Su PARK
;
Chong Hyeon YOON
;
Wan Uk KIM
;
Do June MIN
;
Jun Ki MIN
;
Sang Heon LEE
;
Sung Hwan PARK
;
Chul Soo CHO
;
Ho Youn KIM
Author Information
1. Department of Internal Medicine, Pundang Jesaeng General Hospital, Korea.
- Publication Type:Original Article
- Keywords:
Knee osteoarthritis;
Ultrasonography;
Osteophyte;
Joint capsule
- MeSH:
Bursitis;
Cartilage, Articular;
Humans;
Joint Capsule;
Knee Joint*;
Knee*;
Osteoarthritis;
Osteoarthritis, Knee*;
Osteophyte;
Synovial Membrane;
Ultrasonography*
- From:The Journal of the Korean Rheumatism Association
2003;10(2):158-165
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: To investigate the ultrasonographic findings in knee OA patients and to examine the possible causes of pain in osteoarthritis by ultrasonography. METHODS: Ultrasonography was performed with 7.5 MHz linear probe in 64 knee OA patients who fulfilled the ACR criteria. All patients were graded according to the Kellgren-Lawrence grades and then classified into group 1 (K/L I and II) and Group 2 (K/L III and IV). Also WOMAC score, BMI, laboratory finding (ESR, CRP) were checked. Ultrasonographic findings was examined; effusion, thickening of synovium, vertical length of medial and lateral osteophyte (longitudinal view), length of capsular distension (medial longitudinal view), evidence of bursitis and articular cartilage. RESULTS: 50.0% of patients had effusion, among whom 68.7% patients also had synovial thickening. In all patients, the severity of pain was correlated with 4 variables; the presence of effusion, disease duration, the length of medial osteophyte, the length of capsular distension (r=0.279, r=0.415, r=0.537, r=0.608, respectively, p<0.05). The length of medial osteophyte, the degree of capsular distension and disease duration were significantly correlated with WOMAC pain score in Group 1 (p<0.05). After multiple regression analysis, the length of medial osteophyte alone had correlation with the pain severity in Group 1 (r2= 0.396 p<0.05) and the only length of capsular distension was significantly correlated with WOMAC pain score in Group 2 (r=0.609, p<0.05). CONCLUSION: The length of osteophyte may be more related with pain severity in mild cases (K/L score I and II) while capsular distension could be an important factor causing knee pain in more advanced knee OA (K/L score III and IV).
