TY - JOUR
T1 - Multiinstitutional epidemiological study regarding osteoarthritis of the hip in Japan
AU - Jingushi, Seiya
AU - Ohfuji, Satoko
AU - Sofue, Muroto
AU - Hirota, Yoshio
AU - Itoman, Moritoshi
AU - Matsumoto, Tadami
AU - Hamada, Yoshiki
AU - Shindo, Hiroyuki
AU - Takatori, Yoshio
AU - Yamada, Harumoto
AU - Yasunaga, Yuji
AU - Ito, Hiroshi
AU - Mori, Satoshi
AU - Owan, Ichiro
AU - Fujii, Genji
AU - Ohashi, Hirotsugu
AU - Iwamoto, Yukihide
AU - Miyanishi, Keita
AU - Iga, Toshiro
AU - Takahira, Naonobu
AU - Sugimori, Tanzo
AU - Sugiyama, Hajime
AU - Okano, Kunihiko
AU - Karita, Tatsuro
AU - Ando, Kenichi
AU - Hamaki, Takanari
AU - Hirayama, Teruhisa
AU - Iwata, Ken
AU - Nakasone, Satoshi
AU - Matsuura, Masanori
AU - Mawatari, Taro
N1 - Funding Information:
Acknowledgements. This study was supported by grants from the Japanese Orthopaedic Association-subsidized Science Project Research 2006-5 and the Japanese Hip Society.
PY - 2010/9
Y1 - 2010/9
N2 - Background. Osteoarthritis (OA) of the hip is a major disease that affects the healthy lifespan of a population. It is necessary to fully understand the patients? conditions before a systematic treatment can be applied. However, a nationwide epidemiologicalstudy regarding hip OA has not yet been conducted in Japan. The present study examined the current status of patients with hip OA, including the disease etiology. Methods. This is a multiinstitutional study of new patients presenting with hip OA at the orthopedic outpatient clinics of 15 institutions in fi ve geographical areas of Japan. The collected data from each patient included the sex, age, treatment history for developmental dysplasia of the hip (DDH), the clinical score of the hip joints based on the Japanese Orthopaedic Association (JOA) scoring system, and the pelvic inclination according to anteroposterior radiographs. In addition, the etiology was determined from the following 17 options: primary OA, acetabular dysplasia, intragluteal dislocation, osteonecrosis, trauma, Perthes disease, slipped capital femoral epiphysis, infection, rheumatoid arthritis, ankylosing spondylitis, neuroarthropathy, endocrine diseases, metabolic diseases, hereditary bone diseases, synovial chondromatosis, generalized OA, and others. Results. There were a substantially larger number of female patients than male patients. This difference regarding sex was present in each generation. The mean age of the patients was 58 ± 7 14 years. The peak age at presentation was approximately 50 years. Most patients had no history of therapy for DDH. The older patients had lower gait and activities of daily living scores. The etiology was assessed to be acetabular dysplasia in ost of the patients. A lower frequency of elderly patients demonstrated acetabular dysplasia. The patients who had a pelvic posterior inclination increased with increasing age. Conclusions. The patients with hip OA in Japan were unique in regard to age distribution, sexual heterogeneity, and disease etiology.
AB - Background. Osteoarthritis (OA) of the hip is a major disease that affects the healthy lifespan of a population. It is necessary to fully understand the patients? conditions before a systematic treatment can be applied. However, a nationwide epidemiologicalstudy regarding hip OA has not yet been conducted in Japan. The present study examined the current status of patients with hip OA, including the disease etiology. Methods. This is a multiinstitutional study of new patients presenting with hip OA at the orthopedic outpatient clinics of 15 institutions in fi ve geographical areas of Japan. The collected data from each patient included the sex, age, treatment history for developmental dysplasia of the hip (DDH), the clinical score of the hip joints based on the Japanese Orthopaedic Association (JOA) scoring system, and the pelvic inclination according to anteroposterior radiographs. In addition, the etiology was determined from the following 17 options: primary OA, acetabular dysplasia, intragluteal dislocation, osteonecrosis, trauma, Perthes disease, slipped capital femoral epiphysis, infection, rheumatoid arthritis, ankylosing spondylitis, neuroarthropathy, endocrine diseases, metabolic diseases, hereditary bone diseases, synovial chondromatosis, generalized OA, and others. Results. There were a substantially larger number of female patients than male patients. This difference regarding sex was present in each generation. The mean age of the patients was 58 ± 7 14 years. The peak age at presentation was approximately 50 years. Most patients had no history of therapy for DDH. The older patients had lower gait and activities of daily living scores. The etiology was assessed to be acetabular dysplasia in ost of the patients. A lower frequency of elderly patients demonstrated acetabular dysplasia. The patients who had a pelvic posterior inclination increased with increasing age. Conclusions. The patients with hip OA in Japan were unique in regard to age distribution, sexual heterogeneity, and disease etiology.
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U2 - 10.1007/s00776-010-1507-8
DO - 10.1007/s00776-010-1507-8
M3 - Article
C2 - 20953923
AN - SCOPUS:78149464035
SN - 0949-2658
VL - 15
SP - 626
EP - 631
JO - Journal of Orthopaedic Science
JF - Journal of Orthopaedic Science
IS - 5
ER -