THA Patients in Standing and Sitting Positions: A Prospective Evaluation Using the Low-Dose ¡°Full-Body¡± EOS? Imaging System
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- 作者：Jean Yves Lazennec ; MD ; PhD* ; &dagger ; ; lazennec.jy@wanadoo.fr ; Adrien Brusson ; MS* ; Marc-Antoine Rousseau ; MD ; PhD* ; &dagger ;
- 关键词：total hip arthroplasty ; dislocation ; cup orientation ; acetabular anteversion ; spinal sagittal balance ; pelvis orientation ; anterior pelvic plane ; pelvic incidence ; pelvic tilt ; sacral slope ; sitting ; standing ; EOS imaging
- 刊名：Seminars in Arthroplasty
- 出版年：2012
- 出版时间：December, 2012
- 年：2012
- 卷：23
- 期：4
- 页码：220-225
- 全文大小：484 K
文摘
Variations in pelvic tilt according to the patient's posture may significantly modify the cup orientation and the prosthetic hip biomechanics. This study reports the ¡°functional¡± positions of a 150 THA cohort using exclusively the novel EOS technology with a specific interest on the radiation dose delivered. The average dose for full-body acquisition was between 0.50 and 1.54 mGy. Globally, an 18¡ã decrease of sacral slope is observed from the standing to the sitting position. A significant increase of cup frontal and sagittal inclination and anteversion were observed in the sitting position. The slot-scanning radiography provides direct numerical descriptors of the pelvic/hip functional relationships.