Relationship of acetabular dysplasia in females with osteoarthritis of the hip to the distance between both anterior superior iliac spines.
BACKGROUND
Acetabular dysplasia (AD) is the main cause of hip osteoarthritis in Japan. A simple method to evaluate acetabular dysplasia would be helpful for early treatment or prevention of hip osteoarthritis. Acetabular dysplasia is reported to be associated with pathological transverse growth of the pelvis, indicating that the distance between the 2 anterior superior iliac spines might be useful for screening and detection of acetabular dysplasia. The purpose of this study was to determine if the acetabular dysplasia radiographic parameters are related to the distance between the 2 anterior superior iliac spines in patients with hip osteoarthritis.


METHODS
In this study, data obtained in a previous multi-institutional examination of patients with hip osteoarthritis in Japan were evaluated. The anterior superior iliac spine distances of 176 female patients (mean age, 54 years; range, 18-85 years) were measured by physical examination. The relationship between the anterior superior iliac spine distance and acetabular dysplasia was analyzed, and the anterior superior iliac spine distances of the patients with acetabular dysplasia who were at relatively high risk for hip osteoarthritis were compared with that of the patients at lower risk.


RESULTS
A statistically significant relationship between the anterior superior iliac spine distance and all of the acetabular dysplasia parameters was observed. The anterior superior iliac spine distances of the acetabular dysplasia patients with a relatively high risk for radiographic acetabular dysplasia parameters were significantly smaller than those of patients at lower risk. Even after adjustment for age, height, and weight, significantly increased relative risk for having high risk AD was found in patients with an ASIS distance of less than 24.5 cm.


CONCLUSIONS
There was a significant relationship between the anterior superior iliac spine distance and the degree of acetabular dysplasia.
Department of Orthopaedic Surgery, Nagasaki Prefectural Center of Medicine and Welfare for Children, Isahaya, Japan.
Kunihiko
K
Okano
Department of Orthopaedic Surgery, Kyushu Rosai Hospital of Japan Labour Health and Welfare Organization, Kitakyushu, Japan.
Seiya
S
Jingushi
Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
Satoko
S
Ohfuji
Orthopaedic Division, Nakajo Central Hospital, Niigata, Japan.
Muroto
M
Sofue
Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
Yoshio
Y
Hirota
Department of Orthopaedic Surgery, Kyushu Rosai Hospital of Japan Labour Health and Welfare Organization, Kitakyushu, Japan.
Moritoshi
M
Itoman
Orthopaedic Division, Mitsuwadai General Hospital, Chiba, Japan.
Yoshiki
Y
Hamada
Department of Orthopaedic Surgery, Graduate School of Medicine, Nagasaki University, Nagasaki, Japan.
Hiroyuki
H
Shindo
Division of Science for Joint Reconstruction, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
Yoshio
Y
Takatori
Department of Orthopaedic Surgery, Fujita Health University, School of Medicine, Toyoake, Japan.
Harumoto
H
Yamada
Department of Artificial Joints and Biomaterials, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
Yuji
Y
Yasunaga
Department of Orthopaedic Surgery, Asahikawa Medical College, Asahikawa, Japan.
Hiroshi
H
Ito
Department of Bone and Joint Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
Satoshi
S
Mori
Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan.
Ichiro
I
Owan
Department of Orthopedic Surgery, Saiseikai Nakatsu Hospital, Osaka, Japan.
Hirotsugu
H
Ohashi
Department of Orthopaedic Surgery, Nagasaki Prefectural Center of Medicine and Welfare for Children, Isahaya, Japan.
Kazumasa
K
Yamaguchi
D000077:Acetabulum / Q000503:physiopathology*; D015415:Biomarkers; D001848:Bone Diseases, Developmental / Q000150:complications* / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006801:Humans; D007085:Ilium / Q000000981:diagnostic imaging*; D007564:Japan; D015207:Osteoarthritis, Hip / Q000209:etiology / Q000473:pathology*; D011859:Radiography
D015415:Biomarkers