OBJECTIVE: In order to achieve accurate implantation of the acetabular prosthesis in total hip arthroplasty (THA), we designed individual templates based on a three-dimensional (3D) model generated from computed tomography (CT) scans. METHODS: Individual templates were designed for 12 patients who underwent THA. A physical template was designed to conform to the contours of the patient's acetabulum and to confirm the rotation of the acetabular center. This guided the acetabular component orientation. RESULTS: The preoperative and postoperative X-ray and CT scans were obtained to assess the location with respect to the accuracy of the acetabular component. For all patients, the abduction angle of the acetabular component was 46.7 degrees to 54.3 degrees and the anteversion angle was 11.3 degrees to 18.5 degrees . CONCLUSIONS: The assessment of postoperative CT scans demonstrated higher accuracy of the acetabular component bore when used with the individual template. Therefore, the individual template can be an alternative to the computer-assisted navigation systems, with a good cost-performance ratio.
OBJECTIVE: In order to achieve accurate implantation of the acetabular prosthesis in total hip arthroplasty (THA), we designed individual templates based on a three-dimensional (3D) model generated from computed tomography (CT) scans. METHODS: Individual templates were designed for 12 patients who underwent THA. A physical template was designed to conform to the contours of the patient's acetabulum and to confirm the rotation of the acetabular center. This guided the acetabular component orientation. RESULTS: The preoperative and postoperative X-ray and CT scans were obtained to assess the location with respect to the accuracy of the acetabular component. For all patients, the abduction angle of the acetabular component was 46.7 degrees to 54.3 degrees and the anteversion angle was 11.3 degrees to 18.5 degrees . CONCLUSIONS: The assessment of postoperative CT scans demonstrated higher accuracy of the acetabular component bore when used with the individual template. Therefore, the individual template can be an alternative to the computer-assisted navigation systems, with a good cost-performance ratio.
Authors: Olivier P P Temmerman; Pieter G H M Raijmakers; Walter L Deville; Johannes Berkhof; Lotty Hooft; Ide C Heyligers Journal: J Arthroplasty Date: 2007-03-28 Impact factor: 4.757
Authors: Guoyan Zheng; Xuan Zhang; Simon D Steppacher; Stephen B Murphy; Klaus A Siebenrock; Moritz Tannast Journal: Comput Methods Programs Biomed Date: 2009-03-27 Impact factor: 5.428
Authors: U Langlotz; P A Grützner; K Bernsmann; J H Kowal; M Tannast; M Caversaccio; L-P Nolte Journal: Proc Inst Mech Eng H Date: 2007-10 Impact factor: 1.617
Authors: Shantanu Patil; Arnie Bergula; Peter C Chen; Clifford W Colwell; Darryl D D'Lima Journal: J Bone Joint Surg Am Date: 2003 Impact factor: 5.284