Effect Of Fluoroscopy On The Position Of Acetabular Prosthesis During Total Hip Arthroplasty

Objective: Total hip arthroplasty is the preferred method of treatment for various end-stage hip disorders because of the special anatomy that the acetabulum is in a deep,poorly exposed position.Coupled with the irregular pelvic shape of some patients,it increases the difficulty of positioning,which makes the accurate placement of the acetabular prosthesis more challenging.Installation of the hip joint,especially the installation of the cup,will affect whether there will be complications after surgery.If the acetabular cup angle is improperly placed during surgery,hip joint prosthesis impact,accelerated lining wear,and even hip dislocation may occur after surgery.The aim of this study was to investigate the effect of using a C-arm machine to measure the phase parameters of the cup prosthesis and adjust the position of the acetabular cup in the pelvic position during the full-scale replacement procedure.Methods: Sixty-one patients undergoing primary total hip arthroplasty admitted to our hospital were divided into observation group and control group according to different intraoperative positioning methods.Thirty patients in the observation group were placed in the acetabular cup after fluoroscopy using the C-arm machine,and thirty-one patients in the control group were placed in the acetabular cup using the traditional method.The acetabular component phase parameters were compared between the two groups,and the pain score and Harris score of the two groups were compared.Results: In this study,64 patients were enrolled in the study,and 3 patients were followed up for 6 months.A total of 61 patients with primary total hip arthroplasty were enrolled.There were no significant differences in gender,age,preoperative VAS score,and Harris hip function score between the two groups(P>0.05).There was no statistically significant difference in acetabular phase parameters and pelvic tilt between the observation group and the postoperative period(P>0.05).The acetabular abduction angle difference before and after surgery in the control group is meaningful(P<0.05).There was no significant difference in the acetabular abduction angle between the two groups(P>0.05).The difference in anteversion angle was significant(P<0.05).There was no significant difference in pain scores between the two groups(P>0.05).The pain score of the observation group was lower than that of the control group(P<0.05).The Harris score of the observation group was higher than that of the control group at 3 and 6 months after operation(P<0.05).Conclusion: Our results show that the use of C-arm X-ray machine for fluoroscopy in total hip arthroplasty can correct pelvic tilt and correct the placement angle of acetabular prosthesis,improve the quality of surgery and improve the Surgical effect.