Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (39): 5781-5787.doi: 10.3969/j.issn.2095-4344.2016.39.001

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C-arm X-ray machine displacement measurement of acetabular anteversion angle and abduction angle during total hip arthroplasty

Chen Jun, Fu Peng, Wang Xu-gang, Zhang Jun, Gao Ming, Huang He, Wang Shou-gang   

  1. Department of Orthopedics, Affiliated Baoji Hospital of Xi’an Medical University, Baoji 721006, Shaanxi Province, China
  • Revised:2016-07-02 Online:2016-09-23 Published:2016-09-23
  • About author:Chen Jun, Department of Orthopedics, Affiliated Baoji Hospital of Xi’an Medical University, Baoji 721006, Shaanxi Province, China

Abstract:

BACKGROUND: In total hip arthroplasty, the accurate placement of the acetabulum is needed to guarantee the survival rate of the prosthesis and improve the prognosis. In order to ensure the accurate placement of the acetabulum, the accurate measurement of the abduction angle and the anteversion angle of the acetabulum is needed.

OBJECTIVE: To investigate the application value of C-arm X-ray displacement measurement of acetabular anteversion angle and abduction angle in total hip arthroplasty. 
METHODS: Totally 63 cases undergoing total hip arthroplasty were divided into two groups according to their will. Patients in the control group (n=30) were implanted with traditional acetabular prosthesis locator. Patients in the observation group (n=33) were implanted with acetabular prosthesis after C-arm X-ray displacement measurement. Acetabular anteversion angle, abduction angle and pelvic inclination were measured before, during and after arthroplasty. Acetabular anteversion angle and abduction angle were measured in both groups after arthroplasty. Pain score and hip function Harris score were recorded in both groups at different time points. 

RESULTS AND CONCLUSION: (1) No significant difference in acetabular anteversion angle, abduction angle and pelvic inclination was detected before, during and after arthroplasty (all P > 0.05). (2) No significant difference in abduction angle was determined between the two groups after arthroplasty (P > 0.05), but acetabular anteversion angle was significantly smaller in the observation group than in the control group (P < 0.05). (3) At 7 days after arthroplasty, Visual Analog Scale scores were less in the observation group than in the control group (P < 0.05). (4) Compared with that before arthroplasty, Harris score was significantly higher after arthroplasty in both groups (P < 0.05). Harris score was higher in the observation group than in the control group at 3 and 12 months after arthroplasty (P < 0.05). (5) Results indicated that during total hip arthroplasty, C-arm X-ray machine can measure acetabular anteversion angle and abduction angle, and effectively correct pelvic inclination, internal and external rotation, abduction and adduction, improve the accuracy of acetabular cup placement and the quality of replacement surgery, and improve the prognosis of the patients.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Arthroplasty, Replacement, Hip, Acetabulum, Hip Joint, Tissue Engineering

CLC Number: