Effects of repeated intra-articular hyaluronic acid on cartilage degeneration evaluated by T1ρ mapping in knee osteoarthritis

Autor: Atsuya Watanabe, Hiroshi Watanabe, Yasushi Oshima, Shinji Kiuchi, Futoshi Ikuta, Sanshiro Hashimoto, Kenji Takahashi, Tomoyuki Okuaki
Rok vydání: 2020
Předmět:
Zdroj: Modern Rheumatology. 31:912-918
ISSN: 1439-7609
1439-7595
DOI: 10.1080/14397595.2020.1830483
Popis: Intra-articular injection of hyaluronic acid (IAHA) has been used for the treatment of knee osteoarthritis (OA), but its effectiveness remains controversial. This study analyzed knee OA over time by magnetic resonance imaging (MRI) T1ρ mapping to objectively evaluate whether long-term repeated administration of IAHA influences cartilage degeneration.Sixty knees of 60 patients [58.3 ± 12.5 years (mean ± standard deviation)] who had multiple T1ρ mapping images were retrospectively analyzed. We calculated the T1ρ values of the medial femorotibial cartilage and classified changes in degenerative areas over time into 3 groups: Improvement, No Change, and Deterioration.Average time between 2 MRI scans was 7.6 ± 1.2 months. The number of IAHA administrations was 15.5 ± 21.3, 8.39 ± 7.19, and 5.80 ± 7.49 in the Improvement, No Change, and Deterioration groups, respectively. Body mass index and number of IAHA administrations were significant factors causing change in the area of degeneration (Cartilage degeneration may be improved with a higher number of administrations of IAHA, based on T1ρ mapping results. This highlights the possibility of increased treatment effectiveness of IAHA for knee OA with repeated administrations.
Databáze: OpenAIRE