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Öğe Acetabular dysplasia in normal Turkish adults(J Michael Ryan Publ Inc, Andover, NJ, United States, 2000) Aktas S.; Pekindil G.; Ercan S.; Pekindil Y.The aim of this investigation was to examine normal hip joint morphometry and the acetabular dysplasia rate in Turkish adults. Center-edge angle, acetabular angle, acetabular depth, acetabular roof obliquity, and roof angle were measured in standardized pelvic radiographs of 495 adults without any hip symptoms. The center-edge angle was significantly different in the patients over the age of 70 than all other age groups except those in the 60 to 69 group. Additionally, there were differences between those in the 60 to 69 age group compared to those in the 20 to 29 age group. The acetabular angle showed a significant difference between gender and between the age groups over 60. The acetabular angle was negatively correlated with center-edge angle. Even though no significant differences were observed in the acetabular depth, differences in acetabular roof obliquity and roof angle were related to gender and age, all showed high standard deviations. The rate of acetabular dysplasia was 2.4% in the Turkish adult population aged 20 to 79. It is concluded that the center-edge angle may be a useful parameter in the evaluation of acetabular dysplasia if one is aware of its difference in patients over the age of 60.The aim of this investigation was to examine normal hip joint morphometry and the acetabular dysplasia rate in Turkish adults. Center-edge angle, acetabular angle, acetabular depth, acetabular roof obliquity, and roof angle were measured in standardized pelvic radiographs of 495 adults without any hip symptoms. The center-edge angle was significantly different in the patients over the age of 70 than all other age groups except those in the 60 to 69 group. Additionally, there were differences between those in the 60 to 69 age group compared to those in the 20 to 29 age group. The acetabular angle showed a significant difference between gender and between the age groups over 60. The acetabular angle was negatively correlated with center-edge angle. Even though no significant differences were observed in the acetabular depth, differences in acetabular roof obliquity and roof angle were related to gender and age, all showed high standard deviations. The rate of acetabular dysplasia was 2.4% in the Turkish adult population aged 20 to 79. It is concluded that the center-edge angle may be a useful parameter in the evaluation of acetabular dysplasia if one is aware of its difference in patients over the age of 60.Öğe The 'chef's hat' appearance of the femoral head in cleidocranial dysplasia(British Editorial Society of Bone and Joint Surgery, 2000) Aktas S.; Wheeler D.; Sussman M.D.Cleidocranial dysplasia (CCD) is inherited as an autosomal dominant disorder characterised by failure of membranous ossification. The condition is due to a mutation of the cbfa1 gene on chromosome 6 which has a role in the development of osteoblasts from the mesenchymal cells. In their growing years, these patients have an unusual shape of the femoral head reminiscent of a 'chef's hat'. In order to confirm the consistency of this sign, we have reviewed the radiographs of 28 patients with CCD. All except three had this appearance. The sign was also seen in patients with coxa vara associated with a variety of other conditions. The chef's hat sign may occur secondary to the particular mechanical environment created by coxa vara as well as abnormal cellular function in patients with CCD. Although coxa vara has some influence on the shape of the femoral head, it is not entirely responsible for its morphology since it was present in only six of the 28 patients with CCD.Öğe Reliability of radiological parameters measured on anteroposterior pelvis radiographs of patients with developmental dysplasia of the hip(2001) Tan L.; Aktas S.; Copuroglu C.; Ozcan M.; Ture M.In order to evaluate the reliability of radiological parameters, we retrospectively reviewed the anteroposterior pelvic xrays of 30 hips in 15 patients with developmental dysplasia of the hip. The following parameters were studied: acetabular index, centeredge angle, c/b ratio, Sharp's angle and teardrop figure. Each of the two authors measured the parameters twice on two separate days. Statistical assessment of the interobserver and intraobserver reliability was performed. The measurements of acetabular index and c/b ratio were reliable according to both intra- and interobserver reliability analysis, whereas center-edge angle, teardrop figure and Sharp's angle evaluations were reliable in the intraobserver comparisons but not in the interobserver comparisons. In conclusion, both acetabular index and c/b ratio may be used safely in the evaluation of developmental dysplasia of the hip.
