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BACKGROUND: The majority of studies on developmental dysplasia of the hip focus on hip malformations, but there are few reports on the effects of acetabular dysplasia on the spine. OBJECTIVE: To investigate the compensation of spinopelvic parameters in coronal and sagittal views in patients with developmental dysplasia of the hip, and to explore the correlation between acetabular development and spinopelvic parameters. METHODS: A total of 101 patients with developmental dysplasia of the hip admitted to the Third Affiliated Hospital of Guangzhou University of Chinese Medicine from January 2018 to June 2022 were selected as the trial group, and 114 healthy subjects were selected as the control group during the same period. The spinopelvic parameters of the subjects were measured through the full-length X-ray films of the coronal and sagittal spines: lumbar lordosis, anterior pelvic tilt, thoracolumbar kyphosis, Cobb angle, and the distance between the C7 plumb line and the center sacral vertical line, sacral slope, pelvic incidence, and thoracic kyphosis. The differences in spinopelvic parameters were compared between the two groups. In addition, the differences in spinopelvic parameters in patients with unilateral, bilateral and different Crowe classifications of developmental dysplasia of the hip were compared. Pearson correlation analysis was used to explore the correlation between Sharp angle and spinopelvic parameters. RESULTS AND CONCLUSION: (1) In the sagittal view, the lumbar lordosis in the trial group was significantly lower than that in the control group (P < 0.05). The pelvic tilt and kyphosis angle of the thoracolumbar segment in the trial group were significantly greater than those in the control group (P < 0.05). In the coronary position, the Cobb angle and the distance between the C7 plumb line and center sacral vertical line in the trial group were significantly greater than those in the control group (P < 0.05). There was no significant difference in the remaining spinopelvic parameters between the two groups (P > 0.05). (2) The lumbar lordosis of patients with bilateral developmental dysplasia of the hip was significantly lower than that of patients with unilateral developmental dysplasia of the hip (P < 0.05). The pelvic tilt, thoracolumbar kyphosis, Cobb angle and the distance between the C7 plumb line and center sacral vertical line in bilateral developmental dysplasia of the hip patients were significantly greater than those in unilateral developmental dysplasia of the hip patients (P < 0.05). (3) The lumbar lordosis decreased with the increase of Crowe classification severity (P < 0.05). The pelvic tilt increased with the severity of the Crowe classification (P < 0.05). (4) Pearson correlation analysis showed that Sharp angle was negatively correlated with lumbar lordosis (P < 0.05), while Sharp angle was positively correlated with anterior pelvic tilt, Cobb angle, C7 plumb line and center sacral vertical line (P < 0.05). (5) It is concluded that the pelvic tilt, thoracolumbar kyphosis, Cobb angle and the distance between the C7 plumb line and center sacral vertical line increase, while lumbar lordosis decreases in developmental dysplasia of the hip patients. The degree of acetabular dysplasia was significantly correlated with lumbar lordosis, pelvic tilt, Cobb angle, C7 plumb line and center sacral vertical line. [ABSTRACT FROM AUTHOR]

BACKGROUND: There are some differences in acetabular anatomical parameters among different regions and different populations, which are very important for the diagnosis and treatment of acetabular diseases. However, the characteristics of acetabular imaging parameters in the Guizhou population are still unclear. OBJECTIVE: To analyze the imaging parameters of acetabular plain radiographs, so as to provide a reference for the diagnosis and treatment of acetabular diseases and the design and installment of the acetabular prosthesis. METHODS: Adult patients who underwent anteroposterior radiography of both hip joints at the Affiliated Hospital of Guizhou Medical University from January 2015 to February 2017 were collected. The acetabular radiographic parameters were measured using the medical imaging software SIEMENS Syngo.Plaza PACS. The data were grouped and analyzed according to age, sex and left and right sides. Pearson correlation analysis was performed between acetabular parameters. The data in the current study were compared with domestic and foreign studies containing the same type of data. RESULTS AND CONCLUSION: (1) Sharpe angle, center edge angle, anteversion angle, abduction angle, acetabular depth, acetabular diameter, modified acetabular index, and acetabular head index were (39.70±3.65)°, (31.10±6.03)°, (19.17±4.26)°, (39.71±3.67)°, (1.16±0.22) cm, (6.45±0.52) cm, (0.33±0.03), and (84.72±4.19)%, respectively. (2) There were statistical differences in Sharp angle between males and females at different age groups (P < 0.05); statistical differences in abduction angle were found in males among different age groups (P < 0.05). (3) There were differences in Sharp angle, center edge angle, anteversion angle, abduction angle, acetabular depth and acetabular diameter between genders. Sharp angle, anteversion angle and abduction angle were smaller in males than those in females (P < 0.05). The center edge angle, acetabular depth, and acetabular diameter were greater in males than that in females (P < 0.05). (4) There were no significant differences in acetabular parameters between the sides. (5) There were differences in the acetabular imaging parameters of the population in the Guizhou district when compared with the same type of data from domestic and foreign studies. Taken together, the acetabular imaging parameters of the population in Guizhou have certain characteristics. The regional features of acetabular imaging parameters should be fully considered in the clinical diagnosis and treatment of acetabular diseases to achieve greater clinical benefits. [ABSTRACT FROM AUTHOR]