title: Utility of Preoperative Femoral Neck Geometry in Predicting Femoral Stem Anteversion.
abstract: This study investigated the relationships between the preoperative femoral anteversions and the femoral stem anteversion using CT scans and CT-based 3D models to determine whether any preoperative anteversion measurement correlates with the postoperative stem anteversion. Pre-operative and post-operative CT scans of 19 hips with THAs were evaluated. Five preoperative anatomical femoral anteversion measurements (CT-Head, CT-Below Head, CT-Neck, 3D-Head, and 3D-Neck) were compared with the postoperative femoral stem anteversion. The preoperative CT-Neck anteversion measurement was most correlated with the postoperative stem anteversion (r=0.761, P=0.002) with the narrowest ranges of the differences (-10.2° to 11.0°). The preoperative anteversions using the femoral neck geometry from CT scans can be used for the estimation of the postoperative femoral stem anteversion in THA.
authors: Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts; Dept. of Orthopedic Surgery, Yonsei University, College of Medicine, Seoul, Korea.
authors: Kwan Kyu
authors: KK
authors: Park
authors: Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts.
authors: Tsung-Yuan
authors: TY
authors: Tsai
authors: Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts.
authors: Dimitris
authors: D
authors: Dimitriou
authors: Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Bioengineering Laboratory, Dept. of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts.
authors: Young-Min
authors: YM
authors: Kwon
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005269:Femur / Q000033:anatomy & histology / Q000601:surgery; D005272:Femur Neck / Q000033:anatomy & histology* / Q000601:surgery*; D006615:Hip / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D011184:Postoperative Period; D057234:Preoperative Period; D014057:Tomography, X-Ray Computed
keywords: computed tomography; femoral anteversion; in-vivo 3-dimensional study; stem anteversion; total hip arthroplasty