Article: article from journal or magazin.
Comparisons of preoperative three-dimensional planning and surgical reconstruction in primary cementless total hip arthroplasty.
Journal of Arthroplasty
Publication types: Journal ArticleP ublication Status: ppublish
Reconstruction of important parameters such as femoral offset and torsion is inaccurate, when templating is based on plain x-rays. We evaluate intraoperative reproducibility of pre-operative CT-based 3D-templating in a consecutive series of 50 patients undergoing primary cementless THA through an anterior approach. Pre-operative planning was compared to a postoperative CT scan by image fusion. The implant size was correctly predicted in 100% of the stems, 94% of the cups and 88% of the heads (length). The difference between the planned and the postoperative leg length was 0.3 + 2.3 mm. Values for overall offset, femoral anteversion, cup inclination and anteversion were 1.4 mm ± 3.1, 0.6° ± 3.3°, -0.4° ± 5° and 6.9° ± 11.4°, respectively. This planning allows accurate implant size prediction. Stem position and cup inclination are accurately reproducible.
Aged, Arthroplasty, Replacement, Hip/methods, Female, Femur/radiography, Femur/surgery, Hip Joint/radiography, Hip Joint/surgery, Hip Prosthesis, Humans, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Joint Diseases/radiography, Joint Diseases/surgery, Leg Length Inequality/radiography, Leg Length Inequality/surgery, Male, Middle Aged, Preoperative Care, Surgery, Computer-Assisted, Tomography, X-Ray Computed
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