Dual X-ray absorptiometry for the evaluation of bone density from the proximal femur after total hip arthroplasty: Analysis protocols and reproducibility

1993 ◽  
Vol 53 (3) ◽  
pp. 158-161 ◽  
Author(s):  
Carlo Trevisan ◽  
Marco Bigoni ◽  
Roberto Cherubini ◽  
Peter Steiger ◽  
Gianni Randelli ◽  
...  
Keyword(s):  
Bone Density ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
X Ray ◽  
Total Hip

scholarly journals An evaluation of proximal femur bone density in young, active patients undergoing total hip arthroplasty at one year postoperatively

2018 ◽  
Vol 29 (1) ◽  
pp. 51-57
Author(s):  
Denis Nam ◽  
Rondek Salih ◽  
Robert L Barrack ◽  
Ryan M Nunley
Keyword(s):  
Bone Density ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Mineral Density ◽  
Stem Design ◽  
Ucla Activity Score ◽  
Total Hip ◽  
The Mean ◽  
Active Patients

Background: Prior investigations have shown a decrease in periprosthetic bone mineral density (BMD) of the calcar following total hip arthroplasty (THA). The purpose of this investigation was to study proximal femur BMD in a cohort of young, active patients following THA at 1 year postoperatively using a recently introduced stem design. Methods: This was a prospective, IRB-approved investigation of patients with an age <65 years, BMI <35 kg/m2, and presymptomatic UCLA score of >6 undergoing a primary THA for a diagnosis of osteoarthritis. All patients received a titanium, proximally coated, tapered cementless femoral stem (ACCOLADE II, Stryker Inc, Mahwah, NJ, USA). Dual energy X-ray absorptiometry scans were performed at 6 weeks, 6 months, and 1 year postoperatively. Bone density was analyzed for 7 traditional Gruen zones with BMD ratios calculated for change in BMD compared with the baseline. Results: 31 patients (mean age of 52.6 + 6.5 years, BMI of 27.9 + 3.9 kg/m2, and UCLA activity score of 7.3 + 1.9) were included. The mean BMD ratio decreased at the 6 months and 1 year interval in zones 1 and 2. However, the mean BMD ratio was maintained in Gruen zones 3 thru 7 with zone 7 (medial calcar) demonstrating 100% maintenance of the baseline BMD at 1 year. Conclusion: This study demonstrates the maintenance of medial calcar bone density at 1 year postoperatively in young, active patients undergoing THA. Further longitudinal analysis of this stem design is necessary to elucidate the significance of this finding.

scholarly journals Predicting Cementless Stem Fixation in Total Hip Arthroplasty Using Radiodensity Mapping

10.29007/dv5n ◽  
2020 ◽  
Author(s):  
Teja Cherukuri ◽  
Chameka Madurawe ◽  
Jim Pierrepont ◽  
Jonathan Bare ◽  
Stephen McMahon ◽  
...  
Keyword(s):  
Bone Density ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Femoral Stem ◽  
X Rays ◽  
Implant Fixation ◽  
X Ray ◽  
Total Hip ◽  
Stem Subsidence

Femoral component loosening due to poor fixation is a common failure mode in cementless total hip arthroplasty (THA). We sought to develop a technique to predicted femoral stem fixation using pre-operative CT.Forty-nine patients requiring THA received pre-operative CTs as part of Corin OPSTM 3D dynamic planning. All patients received a taper wedged blade stem (TriFitTM TS, Corin UK) implanted through a posterior approach. Post-operatively, patients received an immediate CT and AP x-ray and a 1-year follow-up x-ray. The distance between the most superior point of the greater trochanter and the shoulder of the stem was measured and scaled using the known cup diameter on both the immediate and 1- year follow-up x-rays. The difference was recorded as stem subsidence. Subsidence greater than 4mm was deemed clinically relevant. The precise placement of the stem determined by registering the known 3D implant geometry to the post-op CT was virtually implanted back into the pre-operative OPSTM planning software. A colour map of the bone density at the stem/bone interface using the Hounsfield Units (HU) of each CT pixel was generated. Blue represents low density bone transitioning through to green and then red.Mean stem subsidence was 1.8mm (0 to 11.1mm). Five patients had clinically relevant subsidence. Significant areas of blue and green around the proximal portion of the stem was observed in high subsidence stems when compared to the stems with minimal subsidence.Using the HU of the CT scan as an indicator for bone density, we were able to predict poor implant fixation and subsequent subsidence in a taper wedge stem.

Proximal Femur Bone Density Decreases up to 5 Years After Total Hip Arthroplasty in Young, Active Patients

2016 ◽  
Vol 31 (12) ◽  
pp. 2825-2830 ◽  
Author(s):  
Denis Nam ◽  
Robert L. Barrack ◽  
John C. Clohisy ◽  
Ryan M. Nunley
Keyword(s):  
Bone Density ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Total Hip ◽  
Femur Bone ◽  
Active Patients

Bone Density at the Proximal Femur After Total Hip Arthroplasty

1998 ◽  
Vol 352 ◽  
pp. 66???74 ◽  
Author(s):  
Heikki Kr??ger ◽  
Petri Venesmaa ◽  
Jukka Jurvelin ◽  
Hannu Miettinen ◽  
Olavi Suomalainen ◽  
...  
Keyword(s):  
Bone Density ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Total Hip

Short-Term Morbidity and Mortality After Hemiarthroplasty and Total Hip Arthroplasty for Pathologic Proximal Femur Fractures

2019 ◽  
Vol 34 (11) ◽  
pp. 2698-2703 ◽  
Author(s):  
Nathan H. Varady ◽  
Bishoy T. Ameen ◽  
Brett L. Hayden ◽  
Caleb M. Yeung ◽  
Pierre-Emmanuel Schwab ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Morbidity And Mortality ◽  
Short Term ◽  
Total Hip ◽  
Proximal Femur Fractures ◽  
Femur Fractures

Total Hip Arthroplasty With Trochanteric Ostectomy for Patients With Angular Deformity of the Proximal Femur

2020 ◽  
Vol 35 (10) ◽  
pp. 2911-2918
Author(s):  
Jung-Taek Kim ◽  
Hong Seok Kim ◽  
Young-Kyun Lee ◽  
Yong-Chan Ha ◽  
Kyung-Hoi Koo
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Angular Deformity ◽  
Total Hip

scholarly journals Is there a reduction in risk of revision when 36-mm heads instead of 32 mm are used in total hip arthroplasty for patients with proximal femur fractures?

2020 ◽  
Vol 91 (4) ◽  
pp. 401-407
Author(s):  
Georgios Tsikandylakis ◽  
Johan N Kärrholm ◽  
Geir Hallan ◽  
Ove Furnes ◽  
Antti Eskelinen ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Proximal Femur ◽  
Total Hip ◽  
Proximal Femur Fractures ◽  
Femur Fractures
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