scholarly journals A-193 Deep learning for fully-automatic quantification of avascular necrosis of the femoral head on 3D hip MRI in young patients eligible for joint preserving hip surgery: A pilot study

2021 ◽  
Author(s):  
Florian Schmaranzer
Keyword(s):  
Deep Learning ◽  
Pilot Study ◽  
Femoral Head ◽  
Avascular Necrosis ◽  
Young Patients ◽  
Hip Surgery ◽  
Automatic Quantification ◽  
Fully Automatic ◽  
Hip Mri

Results of applying minimally invasive two-stage decompression with bone alloplasty for avascular necrosis of the femoral head

2021 ◽  
Vol 19 (3) ◽  
pp. 69-74
Author(s):  
A. V. ANTONOV ◽  
◽  
V. E. VOLOVIK ◽  
A. G. RYKOV ◽  
S. N. BEREZUTSKIY ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Femoral Head ◽  
Minimally Invasive ◽  
Avascular Necrosis ◽  
Hip Joint ◽  
Rapid Development ◽  
Young Patients ◽  
Walking Distance ◽  
Joint Function ◽  
Two Stage

Avascular necrosis of the femoral head is a complex medical and social problem. The rapid development of the disease, the complexity of diagnosis and the prevalence among young patients leads to impaired hip joint function and further disability. To improve the quality of life of patients, the Orthopedic Department of the Traumatology Center of Khabarovsk developed a method of minimally invasive two-stage decompression. Surgical treatment was performed in 30 cases in patients with ANFH of stages 0, 1, 2 (by ARCO). Evaluation of treatment results was carried out before operative treatment, after 6 and 12 months. 12 months after surgical treatment, positive dynamics was noted, namely, pain reduction, a walking distance increase, abandonment of crutches, opportunity to use public transport, ability to sit for a long time in one and the same position, to put on shoes, and the abandonment of constant intake of non-steroidal anti-inflammatory drugs. The assessment of hip joint function in 20% of cases showed an excellent result, in 26,6% of cases — a good result, in 40% — satisfactory, and in 13,3% (4 people) — unsatisfactory result, which proves the effectiveness of the proposed treatment method and the feasibility of its use.

Synovial fluid β-endorphin level in avascular necrosis, rheumatoid arthritis, and osteoarthritis of the femoral head and knee. A controlled pilot study

2010 ◽  
Vol 30 (4) ◽  
pp. 537-540 ◽  
Author(s):  
Kálmán Toth ◽  
István Barna ◽  
György Nagy ◽  
Karoly Wellinger ◽  
Gyöngyi Horvath ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Pilot Study ◽  
Femoral Head ◽  
Synovial Fluid ◽  
Avascular Necrosis

Bipolar versus Total Hip Arthroplasty in the Treatment of Avascular Necrosis of the Femoral Head in Young Patients

2002 ◽  
Vol 12 (2) ◽  
pp. 142-149 ◽  
Author(s):  
T. Scheerlinck ◽  
M. Dezillie ◽  
A. Monsaert ◽  
P. Opdecam
Keyword(s):  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Avascular Necrosis ◽  
Hip Arthroplasty ◽  
Groin Pain ◽  
Functional Result ◽  
Young Patients ◽  
Total Hip ◽  
Lost To Follow Up

The authors evaluate medium-term results of bipolar and total hip arthroplasty as a treatment for avascular necrosis of the femoral head. Between 1990 and 2000, 57 hips (45 patients) were treated with a bipolar (BHA: 37 hips) or total hip arthroplasty (THA: 20 hips) depending on the radiographic and macroscopic aspect of the acetabulum. At surgery, all patients were under 65 years of age (average: 45.09 years). All had the same cementless hydroxylapatite coated femoral stem inserted through an anterolateral approach. The BHA were followed during a mean of 4.49 years. One BHA was lost to follow-up. Seven out of 36 hips (19.44%) were considered failures: three due to a poor functional result (Harris Hip Score (HHS) <70) and four which needed conversion to THA for groin pain. Two hips were revised for periprosthetic fracture. Twenty BHA (55.56%) had a good or excellent result (HHS 80). The THA were followed for a mean of 4.32 years. One THA was lost to follow-up. Four out of 19 hips (21.05%) were considered as failures. Three due to a poor functional result (HHS<70) and one which needed cup revision for recurrent dislocation. Fifteen THA (78.95%) had a good or excellent functional result (HHS80). BHA as a treatment of avascular necrosis of the femoral head in young patients preserves bone stock for later revisions and can lead to excellent results. But the outcome seems less predictable than after THA. Groin pain associated to BHA can be treated successfully with conversion to THA if necessary.

scholarly journals Extensive Recontouring of the Femoral Head with Osteochondral Allografting: A Case Report with Histological and MicroCT Analysis

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Amir A. Jamali ◽  
Douglas Rowland ◽  
Kristen N. Vandewalker
Keyword(s):  
Case Report ◽  
Femoral Head ◽  
Posttraumatic Growth ◽  
Avascular Necrosis ◽  
Hip Joint ◽  
Case Reports ◽  
Young Patients ◽  
Osteochondral Allograft ◽  
Microct Analysis ◽  
Osteochondral Allografts

Morphological abnormalities such as cam deformity or growth disturbances can have a detrimental effect on the smooth function of the hip joint. This case reports an attempt to salvage the hip joint of a young patient with a posttraumatic growth disturbance of the femoral head using a fresh osteochondral allograft. This treatment has been used very rarely in the femoral head due to the presumed tenuous blood supply of the head and the perceived risk of nonunion or progressive avascular necrosis. The patient in this case had persistent pain and mechanical symptoms leading to hip replacement. A detailed analysis of the retrieved femoral head demonstrated durability and healing of the grafts based on gross inspection, histology of bone and cartilage, and microCT analysis. This case is the first report to our knowledge of a detailed histological and radiographic analysis of the fate of osteochondral allografts of the femoral head. We hope that this case provides justification for the use of osteochondral allografts of the femoral head for other indications such as femoral head fractures, avascular necrosis, and benign epiphyseal tumors of the femoral head in an effort to avoid arthroplasty in young patients. The authors have obtained the patient’s informed written consent for print and electronic publication of the case report.

Checkmark: A sign for the detection of iliopsoas pathology on MRI of the hip

2010 ◽  
Vol 51 (5) ◽  
pp. 539-542 ◽  
Author(s):  
Iris Eshed ◽  
Yael Inbar ◽  
Marjorie Hertz ◽  
Sara Apter
Keyword(s):  
Femoral Head ◽  
Avascular Necrosis ◽  
Psoas Muscle ◽  
Normal Muscle ◽  
T1 And T2 ◽  
Simple Indicator ◽  
Hip Mri

Background: The iliopsoas compartment can be involved in many different disease processes with a wide variety of symptoms that may simulate avascular necrosis (AVN) of the femoral head. The psoas muscle merges with the iliacus to form a checkmark (√) shape in the coronal MRI plane, with normal muscle intensities, on both sides of the spine. Purpose: To evaluate whether abnormality of this checkmark shape (obliteration or abnormal intensity), the checkmark sign, can be used as a simple indicator of iliopsoas pathologies on MR examinations performed for suspected AVN of the hip. Material and Methods: A total of 75 hip MRI examinations performed during 2007 for suspected AVN (male:female ratio, 44:31; average age, 41 years) were retrospectively assessed. The iliopsoas compartment was assessed on the coronal T1 and T2 fat saturated sequences for the presence of the checkmark sign by a consensus of two readers. Results: Twenty-six patients had signs of AVN and 49 patients had either other hip findings or normal hips. A normal checkmark shape was observed in all but two examinations. Obliteration of the checkmark shape, a positive checkmark sign, in those two was due to psoas compartment pathology (infection and hematoma of the iliopsoas compartment). Conclusion: A positive checkmark sign (abnormal shape or intensity) can serve as a clue for unsuspected iliopsoas pathology when evaluating MRI of the hip in patients with suspected AVN.

scholarly journals Deep Learning–based Method for Fully Automatic Quantification of Left Ventricle Function from Cine MR Images: A Multivendor, Multicenter Study

Radiology ◽  
2019 ◽  
Vol 290 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Qian Tao ◽  
Wenjun Yan ◽  
Yuanyuan Wang ◽  
Elisabeth H. M. Paiman ◽  
Denis P. Shamonin ◽  
...  
Keyword(s):  
Deep Learning ◽  
Left Ventricle ◽  
Multicenter Study ◽  
Mr Images ◽  
Left Ventricle Function ◽  
Automatic Quantification ◽  
Cine Mr ◽  
Fully Automatic ◽  
Ventricle Function

Avascular Necrosis of the Femoral Head after Renal Transplantation

1999 ◽  
Vol 41 (2) ◽  
pp. 381
Author(s):  
Hae Woong Jeong ◽  
Jeong Hee Yoon ◽  
Chang Soo Kim
Keyword(s):  
Renal Transplantation ◽  
Femoral Head ◽  
Avascular Necrosis
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