RELATIONSHIP BETWEEN THE LESION IMAGE ON THE MAGNETIC RESONANCE OF NECROTIC FEMORAL HEAD AND LEVEL OF PAIN AND DISEASE STAGE

Thùy Dương Lê1,, Thị Bình Lưu 2, Minh Núi Nguyễn3
1 HaiPhong Medical College
2 Thai Nguyen Department of health
3 Vietnam Military Medical Academy

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Abstract

Objective: To determine the relationship between the lesion characteristics on magnetic resonance image with pain level and disease stage of patients with aseptic necrosis of the femoral head. Subjects and Methods: A cross-sectional descriptive study on 245 patients (416 femoral heads) with aseptic necrosis of the femoral head at Viet Duc, Bach Mai, E and Thai Nguyen National Hospitals from Jan 2017 to May 2022. Results: Double line signs were most common in stage II (92.4%), bone marrow edema was most often seen in stage III (89.0%). 54.5% of femoral head stage I have necrosis area less than 15% of femoral head area, 43.5% of femoral head stage II have necrosis area of ​​more than 30% of femoral head area. Mild subchondral fractures and femoral head collapse (<15%) were most common in stage III of the disease with rates of 26.5% and 60.2%; Severe subchondral fractures and femoral fractures (>30%) in stage IV accounted for the highest rates of 24.2% and 46.2%. The rate of femoral head bone marrow edema and hip effusion increased gradually with pain (p<0.001). The rate of hip with clinically severe pain was found in 89.2% of femoral head with signs of bone marrow edema and 84.2% of hip with effusion on magnetic resonance imaging. The proportion of femoral head with double line image on magnetic resonance decreased gradually with the degree of hip pain (p<0.005). Conclusion: Magnetic resonance imaging of necrotic femoral head is related to pain level and disease stage.

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References

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