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Abstract

Joint biomarkers in idiopathic femoral head osteonecrosis: comparison with hip osteoarthritis.

Shinichi Kato, Harumoto Yamada, Nobuki Terada, Koichi Masuda, Mary Ellen Lenz, Mitsuhiro Morita, Yasuo Yoshihara and Osamu Henmi
The Journal of Rheumatology August 2005, 32 (8) 1518-1523;
Shinichi Kato
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Harumoto Yamada
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Nobuki Terada
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Koichi Masuda
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Mary Ellen Lenz
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Mitsuhiro Morita
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Yasuo Yoshihara
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Osamu Henmi
Department of Orthopaedic Surgery, Fujita Health University, Second Hospital, Nagoya, Japan.
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Abstract

OBJECTIVE: To compare concentrations of joint biomarkers in synovial fluid (SF) between idiopathic osteonecrosis of the femoral head (ION) and osteoarthritis (OA) of the hip joint. METHODS: Levels of the joint biomarkers cartilage oligomeric matrix protein (COMP), antigenic keratan sulfate (AgKS), and hyaluronan (HA) in SF samples from 21 cases of ION and their relationship to disease stage and history of steroid use were assessed and compared to the result of 29 cases of hip OA. RESULTS: In both the ION and hip OA groups, levels of COMP and AgKS in SF showed a significant positive correlation. The ION group had significantly higher levels of AgKS in SF than the hip OA group. In the ION group, stage II patients had significantly higher SF levels of both COMP and AgKS than those in stage III patients. No difference in level of HA in hip joint SF was found between steroid and non-steroid treated ION patients or between the stage II and III subgroups. CONCLUSION: SF levels of COMP and AgKS may serve as useful joint biomarkers that reflect cartilage metabolism not only in hip OA but also in ION.

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The Journal of Rheumatology
Vol. 32, Issue 8
1 Aug 2005
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Joint biomarkers in idiopathic femoral head osteonecrosis: comparison with hip osteoarthritis.
Shinichi Kato, Harumoto Yamada, Nobuki Terada, Koichi Masuda, Mary Ellen Lenz, Mitsuhiro Morita, Yasuo Yoshihara, Osamu Henmi
The Journal of Rheumatology Aug 2005, 32 (8) 1518-1523;

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Joint biomarkers in idiopathic femoral head osteonecrosis: comparison with hip osteoarthritis.
Shinichi Kato, Harumoto Yamada, Nobuki Terada, Koichi Masuda, Mary Ellen Lenz, Mitsuhiro Morita, Yasuo Yoshihara, Osamu Henmi
The Journal of Rheumatology Aug 2005, 32 (8) 1518-1523;
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