scholarly journals A STUDY OF FEMORAL NECK ANTEVERSION ANGLE IN CENTRAL INDIAN POPULATION: A GUIDE FOR ORTHOPAEDIC SURGERIES INCLUDING HIP ARTHROPLASTY

2018 ◽  
Vol 6 (3.3) ◽  
pp. 5698-5703
Author(s):  
Diwakar Dhurandhar ◽  
◽  
Jagriti Agrawal ◽  
Deepti Chandrakar ◽  
◽  
...  
Keyword(s):  
Femoral Neck ◽  
Hip Arthroplasty ◽  
Indian Population ◽  
Anteversion Angle ◽  
Femoral Neck Anteversion

scholarly journals Pre- and postoperative offset and femoral neck version measurements and validation using 3D computed tomography in total hip arthroplasty

2020 ◽  
Vol 9 (10) ◽  
pp. 205846012096491
Author(s):  
Mats Geijer ◽  
Sverrir Kiernan ◽  
Martin Sundberg ◽  
Gunnar Flivik
Keyword(s):  
Total Hip Arthroplasty ◽  
Femoral Neck ◽  
Hip Arthroplasty ◽  
Intraclass Correlation ◽  
Hip Osteoarthritis ◽  
Data Sets ◽  
Femoral Offset ◽  
Total Hip ◽  
Femoral Neck Anteversion ◽  
Before And After

Background Restoration of a correct biomechanical situation after total hip arthroplasty is important. Purpose To evaluate proximal femoral symmetry of acetabular and femoral offset and femoral neck anteversion pre- and postoperatively in hip arthroplasty by semi-automated 3D-CT and to validate the software measurements by inter- and intraobserver agreement calculations. Material and Methods In low-dose CT on 71 patients before and after unilateral total hip arthroplasty, two observers used a digital 3D templating software to measure acetabular offset, true and functional femoral offset, and femoral neck anteversion. Observer agreements were calculated using intraclass correlation. Hip measurements were compared in each patient and between pre- and postoperative measurements. Results Preoperatively, acetabular offset (2.4 mm), true (2.2 mm), and functional global offset (2.7 mm) were significantly larger on the osteoarthritic side without side-to-side differences for true and functional femoral offset or femoral neck anteversion. Postoperatively, acetabular offset was significantly smaller on the operated side (2.1 mm) with a concomitantly increased true (2.5 mm) and functional femoral offset (1.5 mm), resulting in symmetric true and functional global offsets. There were no differences in postoperative femoral neck anteversion. Inter- and intraobserver agreements were near-perfect, ranging between 0.92 and 0.98 with narrow confidence intervals (0.77–0.98 to 0.94–0.99). Conclusion Acetabular and concomitantly global offset are generally increased in hip osteoarthritis. Postoperative acetabular offset was reduced, and femoral offset increased to maintain global offset. 3D measurements were reproducible with near-perfect observer agreements. 3D data sets should be used for pre- and postoperative measurements in hip arthroplasty.

MPR realignment increases accuracy when measuring femoral neck anteversion angle

2013 ◽  
Vol 42 (8) ◽  
pp. 1119-1125 ◽  
Author(s):  
Tommy Hemmert Olesen ◽  
Trine Torfing ◽  
Søren Overgaard
Keyword(s):  
Femoral Neck ◽  
Anteversion Angle ◽  
Femoral Neck Anteversion

The consistency between measurements of the femoral neck anteversion angle in DDH on three-dimensional CT and MRI

2015 ◽  
Vol 57 (6) ◽  
pp. 716-720 ◽  
Author(s):  
Cunhua Mao ◽  
Yanchen Liang ◽  
Chengzong Ding ◽  
Lingfei Guo ◽  
Yanbing Wang ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Three Dimensional ◽  
Anteversion Angle ◽  
Femoral Neck Anteversion ◽  
Ct And Mri

Measurement of the femoral neck anteversion angle in the dog using computed tomography

2007 ◽  
Vol 174 (2) ◽  
pp. 378-383 ◽  
Author(s):  
M.M.D. Ginja ◽  
J.M. Gonzalo-Orden ◽  
S.S. Jesus ◽  
A.M. Silvestre ◽  
M.P. Llorens-Pena ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Femoral Neck ◽  
Anteversion Angle ◽  
Femoral Neck Anteversion

scholarly journals Initial Rotational Instability of the Tapered Wedge-Shaped Type Cementless Stem

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Yosuke Iwamoto ◽  
Hiroaki Kijima ◽  
Hiroshi Tazawa ◽  
Natsuo Konishi ◽  
Hitoshi Kubota ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Rotational Instability ◽  
Femoral Canal ◽  
Cementless Stem ◽  
Anteversion Angle ◽  
Rotational Angle ◽  
Femoral Neck Anteversion ◽  
Stem Subsidence ◽  
The Mean ◽  
Hip Arthroplasties

Background. Because the tapered wedge-shaped type cementless stem has a small anteroposterior width and a low occupation rate in the medullary space, postoperative rotational instability and stem subsidence due to inadequate proximal fixation are concerns. The purpose of this study was to clarify the relationship between the rotational instability of the tapered wedge-shaped type cementless stem and femoral canal shape. Methods. A total of 61 primary total hip arthroplasties with the tapered wedge-shaped type cementless stem Accolade® TMZF (11 males, 50 females; mean age 60 years) from January 2012 to June 2015 who underwent computed tomography before surgery and within 4 weeks and 1 year after surgery were evaluated. The preoperative femoral neck anteversion angle, preoperative femoral canal flair index, the degree of postoperative stem subsidence within 1 year after operation, and the degree of rotational change in the stem setting angle within 1 year after operation were investigated. Results. The mean preoperative femoral neck anteversion angle was 32.2° ± 17.8° (0°–69°), and the mean preoperative canal flair index was 3.68 ± 0.58 (2.44–5.55). There were no stem subsidence cases within 1 year after operation. The mean degree of rotational change in the stem from immediately to 1 year after surgery was −0.4° ± 1.7° (−3°–3°). There was no significant correlation between the canal flair index and the rotational change in the stem. In addition, the mean difference between the preoperative femoral neck anteversion angle and the stem rotational angle immediately after surgery was only 1.3° ± 5.3° (−29°–15°). Conclusions. In all cases, including stove-pipe cases, the degree of rotational change in the Accolade® TMZF stem from immediately to 1 year after surgery was within 3°. In other words, regardless of femoral canal shape, the tapered wedge-shaped type cementless stem has little initial rotational instability.

Aspects of femoral neck anteversion

1988 ◽  
Vol 29 (6) ◽  
pp. 689-694 ◽  
Author(s):  
A. Høiseth ◽  
O. Reikerås ◽  
E. Fønstelien
Keyword(s):  
Femoral Neck ◽  
Femoral Neck Anteversion
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