J Korean Hip Soc.  2007 Sep;19(3):155-160. 10.5371/jkhs.2007.19.3.155.

Intraoperative Imaging to Monitor the Alignment of Acetabular Cup for Total Hip Replacement Arthroplasty

• Park SE
• Kim WY
• Kwon OS
• Kim YY
• Won HY

• KMID: 1811332
• DOI: http://doi.org/10.5371/jkhs.2007.19.3.155

Abstract

PURPOSE
This study examined intraoperative imaging to monitor the alignment of the acetabular cup for total hip replacement arthroplasty (THRA) using C-arm fluoroscopy and to increase the accuracy of THRA prosthetic fixation.
MATERIALS AND METHODS
From March 2004 to April 2007, 54 patients underwent THRA monitored by the imaging. 40degreesinclination and a 15degreesanteversion angle was considered to be ideal. The items compared included the alignment of the acetabular cup and the follow up rates of the hip dislocation.
RESULTS
There was one case of hip dislocation. The mean inclination angle of the acetabular component was 39.9degreeswith a standard deviation of 3.038. The mean anteversion angle of the acetabular component was 14.9degreeswith a standard deviation of 1.398. The mean difference examination and variance in the anteversion angle showed a significant result.(P<0.05)
CONCLUSION
Intraoperative imaging increases the alignment accuracy of the acetabular cup and helps stabilize the prosthesis.

Keyword

Total hip replacement arthroplasty; Acetabular cup; Alignment

MeSH Terms

Acetabulum*
Arthroplasty*
Arthroplasty, Replacement, Hip*
Fluoroscopy
Follow-Up Studies
Hip Dislocation
Humans
Prostheses and Implants