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Total Hip Prostheses in Standing, Sitting and Squatting Positions: An Overview of Our 8 Years Practice Using the EOS Imaging Technology.

Lazennec JY, Rousseau MA, Brusson A, Folinais D, Amel M, Clarke I, Pour AE - Open Orthop J (2015)

Bottom Line: More total hip arthroplasty (THA) is performed worldwide and especially in younger and more active patients compared to earlier decades.Our results will be compared and confronted with the actual literature about this innovative technology.We shall especially emphasize our experience about patients with abnormal posture and the evolution of the subject over time, because the phenomenon of an aging spine is frequently associated with the process of aging hips.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedic and Trauma Surgery, Pitié-Salpétrière Hospital, Assistance Publique - Hopitaux de Paris, UPMC, 47-83 Boulevard de l'hôpital, 75013 Paris, France ; BiomechanicsLab (LBM), Arts et Metiers Paris-Tech, Paris, France ; Department of Anatomy, UPMC, 105 Boulevard de l'hôpital, 75013 Paris, France.

ABSTRACT
More total hip arthroplasty (THA) is performed worldwide and especially in younger and more active patients compared to earlier decades. One of the focuses of THA research in the future will be on optimizing the radiological follow-up of these patients using 2D and 3D measurements of implants position while reducing the radiation dose delivered. Low-dose EOS(®) imaging is an innovative slot-scanning radiograph system providing valuable information in patient functional positions (standing, sitting and even squatting positions). EOS has been proven accurate and reliable without significant inconvenience caused by the metallic artifacts of implants. The ability to obtain precise data on implant orientation according to the patient posture opens new perspectives for a comprehensive analysis of the pelvic frontal and sagittal balance and its potential impact on implants function and failures. We report our 8 years experience on our first 300 THA patients using this technology routinely for pre and post op evaluation. Our results will be compared and confronted with the actual literature about this innovative technology. We shall especially emphasize our experience about patients with abnormal posture and the evolution of the subject over time, because the phenomenon of an aging spine is frequently associated with the process of aging hips.

No MeSH data available.


Related in: MedlinePlus

On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by thevertical and the femoral axis between the center of the femoral head and Blumensaat’s line. A: standard patient in standing position. B: hipflexion in standing position. C: hip hyper extension in standing position.
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Figure 14: On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by thevertical and the femoral axis between the center of the femoral head and Blumensaat’s line. A: standard patient in standing position. B: hipflexion in standing position. C: hip hyper extension in standing position.

Mentions: On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by the vertical and the femoral axis between the center of the femoral head and the summit of Blumensaat’s line [18] (Fig. 14). It is greater in case of flexion contracture of the hip in standing position, and can be negative in hyperextension of the hip. Femoral sagittal tilt correlates statistically with pelvic tilt: the greater the pelvic tilt, the greater the FST angle [20]. Generally the flexion contracture is mainly assessed clinically or qualitatively as the quality and feasibility of long-leg X-rays on lateral view is rarely sufficient to obtain precise angles and values.


Total Hip Prostheses in Standing, Sitting and Squatting Positions: An Overview of Our 8 Years Practice Using the EOS Imaging Technology.

Lazennec JY, Rousseau MA, Brusson A, Folinais D, Amel M, Clarke I, Pour AE - Open Orthop J (2015)

On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by thevertical and the femoral axis between the center of the femoral head and Blumensaat’s line. A: standard patient in standing position. B: hipflexion in standing position. C: hip hyper extension in standing position.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384273&req=5

Figure 14: On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by thevertical and the femoral axis between the center of the femoral head and Blumensaat’s line. A: standard patient in standing position. B: hipflexion in standing position. C: hip hyper extension in standing position.
Mentions: On the lateral view, the femoral sagittal tilt (FST) or femoral sagittal inclination angle is defined as the angle subtended by the vertical and the femoral axis between the center of the femoral head and the summit of Blumensaat’s line [18] (Fig. 14). It is greater in case of flexion contracture of the hip in standing position, and can be negative in hyperextension of the hip. Femoral sagittal tilt correlates statistically with pelvic tilt: the greater the pelvic tilt, the greater the FST angle [20]. Generally the flexion contracture is mainly assessed clinically or qualitatively as the quality and feasibility of long-leg X-rays on lateral view is rarely sufficient to obtain precise angles and values.

Bottom Line: More total hip arthroplasty (THA) is performed worldwide and especially in younger and more active patients compared to earlier decades.Our results will be compared and confronted with the actual literature about this innovative technology.We shall especially emphasize our experience about patients with abnormal posture and the evolution of the subject over time, because the phenomenon of an aging spine is frequently associated with the process of aging hips.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedic and Trauma Surgery, Pitié-Salpétrière Hospital, Assistance Publique - Hopitaux de Paris, UPMC, 47-83 Boulevard de l'hôpital, 75013 Paris, France ; BiomechanicsLab (LBM), Arts et Metiers Paris-Tech, Paris, France ; Department of Anatomy, UPMC, 105 Boulevard de l'hôpital, 75013 Paris, France.

ABSTRACT
More total hip arthroplasty (THA) is performed worldwide and especially in younger and more active patients compared to earlier decades. One of the focuses of THA research in the future will be on optimizing the radiological follow-up of these patients using 2D and 3D measurements of implants position while reducing the radiation dose delivered. Low-dose EOS(®) imaging is an innovative slot-scanning radiograph system providing valuable information in patient functional positions (standing, sitting and even squatting positions). EOS has been proven accurate and reliable without significant inconvenience caused by the metallic artifacts of implants. The ability to obtain precise data on implant orientation according to the patient posture opens new perspectives for a comprehensive analysis of the pelvic frontal and sagittal balance and its potential impact on implants function and failures. We report our 8 years experience on our first 300 THA patients using this technology routinely for pre and post op evaluation. Our results will be compared and confronted with the actual literature about this innovative technology. We shall especially emphasize our experience about patients with abnormal posture and the evolution of the subject over time, because the phenomenon of an aging spine is frequently associated with the process of aging hips.

No MeSH data available.


Related in: MedlinePlus