scholarly journals Early repair of necrotic lesion of the femoral head after high-degree posterior rotational osteotomy in young patients--a study evaluated by volume measurement using magnetic resonance imaging

2015 ◽  
Vol 2 (2) ◽  
pp. 145-151 ◽  
Author(s):  
T. Ishikwa ◽  
T. Atsumi ◽  
S. Tamaoki ◽  
R. Nakanishi ◽  
M. Watanabe ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Femoral Head ◽  
Young Patients ◽  
Volume Measurement ◽  
Necrotic Lesion ◽  
Resonance Imaging ◽  
Early Repair ◽  
Rotational Osteotomy ◽  
High Degree

scholarly journals Magnetic resonance imaging of avascular necrosis of the femoral head: predictive findings of total hip arthroplasty

2021 ◽  
Vol 10 (4) ◽  
pp. 205846012110083
Author(s):  
Matti Väänänen ◽  
Osmo Tervonen ◽  
Mika T Nevalainen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Bone Marrow Edema ◽  
Necrotic Lesion ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Total Hip

Background Avascular osteonecrosis of the femoral head (AVNFH) is an ischemic condition which despite different treatments often leads to collapse of the femoral head and to total hip arthroplasty. However, the magnetic resonance imaging findings predisposing to disease progression and total hip arthroplasty are somewhat elusive. Purpose To evaluate the magnetic resonance imaging findings of AVNFH and to assess the patterns of findings which may predict total hip arthroplasty. Materials and methods A retrospective study was conducted with a total of 18 diagnosed AVNFH treated with core decompression combined with intraosseous stem cell treatment. After treatment, magnetic resonance imaging follow-ups were done at three-month and one-year follow-up or until total hip arthroplasty. Association Research Circulation Osseous classification and magnetic resonance imaging findings such as the size and the location of the AVNFH, bone marrow edema in femoral neck, effusion and subchondral fracture were evaluated. Results Hips advancing to total hip arthroplasty have more often bone marrow edema in femoral neck (90% vs. 0%), adjacent to necrotic lesion (100% vs. 43%) and in acetabulum (90% vs. 14%), but also subchondral fractures (70% vs. 0%), effusion (80% vs. 29%), and synovitis (80% vs. 14,3%). The greater size and the lateral weight-bearing location of the necrotic lesion also predicted future total hip arthroplasty. Conclusion Hips advancing to total hip arthroplasty have often a combination of pathognomonic AVNFH imaging findings compared to hips not advancing to total hip arthroplasty.

A Comparison of Magnetic Resonance Imaging to Bone Scintigraphy in Early Traumatic Ischemia of the Femoral Head

1992 ◽  
Vol &NA; (285) ◽  
pp. 30???34 ◽  
Author(s):  
LOUIS J. RULAND ◽  
GWO-JAW WANG ◽  
CHARLES D. TEATES ◽  
SPENCER GAY ◽  
ARIE RIJKE
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Femoral Head ◽  
Bone Scintigraphy ◽  
Resonance Imaging

scholarly journals Automatic Cartilage Segmentation for Delayed Gadolinium-Enhanced Magnetic Resonance Imaging of Hip Joint Cartilage: A Feasibility Study

Cartilage ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Tobias Hesper ◽  
Bernd Bittersohl ◽  
Christoph Schleich ◽  
Harish Hosalkar ◽  
Rüdiger Krauspe ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Femoral Head ◽  
Hip Joint ◽  
Rank Correlation ◽  
Joint Cartilage ◽  
Resonance Imaging ◽  
Femoral Head Cartilage ◽  
Processing Software ◽  
Joint Assessment

Objective Automatic segmentation for biochemical cartilage evaluation holds promise for an efficient and reader-independent analysis. This pilot study aims to investigate the feasibility and to compare delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) hip joint assessment with manual segmentation of acetabular and femoral head cartilage and dGEMRIC hip joint assessment using automatic surface and volume processing software at 3 Tesla. Design Three-dimensional (3D) dGEMRIC data sets of 6 patients with hip-related pathology were assessed (1) manually including multiplanar image reformatting and regions of interest (ROI) analysis and (2) automated by using a combined surface and volume processing software. For both techniques, T1Gd values were obtained in acetabular and femoral head cartilage at 7 regions (anterior, anterior-superior, superior-anterior, superior, superior-posterior, posterior-superior, and posterior) in central and peripheral portions. Correlation between both techniques was calculated utilizing Spearman’s rank correlation coefficient. Results A high correlation between both techniques was observed for acetabular (ρ = 0.897; P < 0.001) and femoral head (ρ = 0.894; P < 0.001) cartilage in all analyzed regions of the hip joint (ρ between 0.755 and 0.955; P < 0.001). Conclusions Automatic cartilage segmentation with dGEMRIC assessment for hip joint cartilage evaluation seems feasible providing high to excellent correlation with manually performed ROI analysis. This technique is feasible for an objective, reader-independant and reliable assessment of biochemical cartilage status.

Computerized Tomography and Magnetic Resonance Imaging in Treatment of Congenital Luxation of the Hip

1996 ◽  
Vol 6 (3) ◽  
pp. 119-123 ◽  
Author(s):  
D. Lazovic ◽  
J. Franke ◽  
C.J. Wirth
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Femoral Head ◽  
Head Position ◽  
Control Treatment ◽  
Congenital Dislocation ◽  
Resonance Imaging ◽  
Metal Artefacts

In treatment of congenital dislocation of the hip, a main aim is to achieve concentricity of reduction. Control by plain x-ray lacks accuracy in determining anteroposterior position. Arthrography and sonography cannot be used when a spica cast is in place. After April 1988, therefore, as an alternative in 16 hips, we have used computed tomography to determine femoral head position, acetabular angle, and extent and integrity of posterior rim. However, the presence of any metallic artefacts, unossified cartilage and the general poor-quality imaging of soft tissue associated with the technique reduce its usefulness. Since January 1990, we have instead used magnetic resonance imaging to control treatment. This technique, in 34 hips, proved accurate in determinating the femoral head position. MRI also gave better images than computed tomography of osseous and cartilaginous structures of the acetabulum and the surrounding soft tissue. Spica casting does not affect the quality of imaging. The effect of metal artefacts can be minimized by using, where necessary, implants of titanium alloy.

Comparison of hippocampal volume measurement by autopsy and post-mortem magnetic resonance imaging

2019 ◽  
Vol 16 (1) ◽  
pp. 119-122
Author(s):  
Sissel Lundemose ◽  
Johannes Rødbro Busch ◽  
Morten Møller ◽  
Karl-Erik Jensen ◽  
Niels Lynnerup ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hippocampal Volume ◽  
Volume Measurement ◽  
Post Mortem ◽  
Resonance Imaging
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