True femoral anteversion during primary total hip arthroplasty: use of postoperative computed tomography-based sections.
This study investigated a reference line that is closer to the true femoral anteversion on only the cutting surface of the proximal femoral neck during a femoral stem insertion in a cementless total hip arthroplasty. A postoperative computed tomography of both hips from 33 consecutive patients after a unilateral primary cementless total hip arthroplasty with an avascular necrosis of the femoral head was taken to observe the positioning of the stem and its correlation with the true anteversion of the contralateral side. The average of the midcortical angle was 14.1 degrees +/- 6.8 degrees on the lesion side and 0.1 degrees +/- 1.3 degrees more than the true anteversion on the contralateral side. This study has shown that anteversion using a midcortical line between the anterior cortical line and the posterior cortical line is compatible with the true femoral anteversion. However, further investigation is required to confirm the true femoral anteversion.
Suh
Kuen Tak
KT
Department of Orthopaedic Surgery, College of Medicine, Pusan National University, Pusan, Korea.
Kang
Jeong Han
JH
Roh
Hyoung Lok
HL
Moon
Kyu Pill
KP
Kim
Hak Jin
HJ
D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements; D005270:Femur Head / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005272:Femur Neck / Q000000981:diagnostic imaging / Q000503:physiopathology*; D007839:Functional Laterality; D006801:Humans; D016059:Range of Motion, Articular; D012399:Rotation; D014057:Tomography, X-Ray Computed
D001843:Bone Cements