Volume 24, Issue 104, July - August, 2020

Evaluation of the hip joint parameters in Vietnamese people with femoral head avascular necrosis by multi-slice computed tomography

Pham Hong Duc¹, Nguyen Tien Chung², Huynh Quang Huy^3♦, Tran Van Kien⁴

¹Department of Radiology, Hanoi Medical University, Ha Noi, Vietnam
²Department of Internal Medicine, Vietnam University of Traditional Medicine, Ha Noi, Vietnam
³Department of Radiology, Pham Ngoc Thach University of Medicine, Ho Chi Minh city, Vietnam
⁴HungVuong General Hospital, Phu Tho, Vietnam

^♦Corresponding author
Department of Radiology, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam; Email: huyhq@pnt.edu.vn

ABSTRACT

Background: The purpose of this study was to evaluate some parameters of the hip by the multi-slice computed tomographic system in Vietnamese patients with avascular necrosis of femoral head indicated total hip arthroplasty, which is not known well before but is important in the hip joint replacement surgery. Materials and Methods: Using 32 slice computed tomographic system (MSCT) with reconstructed multiplanar protocol to evaluate parameters of the acetabulum and proximal femur and their relationships in 116 hip joints of 58 patients with avascular necrosis of femoral head. We spat 116 hip joints into three groups: early-stage patients group, stage III patients group, and stage IV patients group. The evaluated parameters for each group, include acetabular inclination angle (A.I), acetabular anteversion angle (A.A), acetabular diameter (A.Di), acetabular depth (A.De), femoral head diameter (F.Di), femoral sharp-neck angle (F.Sn) and femoral medial offset (F.O). Results: There were significant difference between early stage, stage III and stage IV groups in AA (p=0.04). There were significant differents between male and female of early stage group in ADi (p=0.02); FDi (p=0.004); of stage IV group in AI (p=0.02); ADi (p=0.00); ADe (p=0.04); FDi (p=0.005); FSn (p=0.01) with the size of acetabular and femoral head in male was significantly higher than female; except that AI in female of stage IV group was significantly higher than male. There is inverse correlation between age with FDi in three groups (Pearson= -0.41; -0.38; -0.04; respectively and p = 0.04; 0.03; 0.002; respectively). Conclusion: The study showed that A.A. of stage IV group was significantly smaller than in the early stage. Generally,FSn of Vietnamese was smaller than other races,but their F.O. was not higher. The values were within a safe range so that the anatomical index can be applied to determine the location of the artificial hip joint in operation.

Keywords: Hip parameters, Femoral head avascular necrosis, Total hip arthroplasty

Medical Science, 2020, 24(104), 1995-2000

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