Relationship of acetabular dysplasia in females with osteoarthritis of the hip to the distance between both anterior superior iliac spines
Kunihiko Okano, Seiya Jingushi, Satoko Ohfuji, Muroto Sofue, Yoshio Hirota, Moritoshi Itoman, Yoshiki Hamada, Hiroyuki Shindo, Yoshio Takatori, Harumoto Yamada, Yuji Yasunaga, Hiroshi Ito, Satoshi Mori, Ichiro Owan, Hirotsugu Ohashi, Kazumasa Yamaguchi
Department of Orthopaedic Surgery, Nagasaki Prefectural Center of Medicine and Welfare for Children, Isahaya, Japan
Med Sci Monit 2014; 20:116-122
Available online: 2014-01-26
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.
Material and 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.
Keywords: Bone Diseases, Developmental - physiopathology, Biological Markers, Acetabulum - physiopathology, Ilium - radiography, Japan, Osteoarthritis, Hip - pathology