Usefulness of Imaging Techniques in Diagnosis of Corticosteroid-induced Avascular Necrosis of Femoral Head
- VernacularTitle:激素性股骨头缺血坏死的影像学诊断价值
- Author:
Juan ZHU
;
Liling LONG
;
Zengming XIAO
- Publication Type:Journal Article
- Keywords:
femoral head;
avascular necrosis;
MRI;
corticosteroid
- From:
Journal of Practical Radiology
1992;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the usefulness of imging techniques in diagnosis of corticosteroid-induced avascular necrosis of the femoral head(ANFH).Methods Twenty seven patients with avascular necrosis of the femoral head due to long-term corticosteriod treatment were analysed retrospectively.There were 16 femal and 11 male,ranged in age from 20 to 46 years(mean age 35.6 years).The course of disease was 1～5 years.The administration of corticoid orally was 60～25 mg/d taken on 6 months to 5 years.ANFH was appeared 3 months to 2 years after the administration of corticoid.The imaging examinations included radiography in 20 cases,MRI in 15 cases,both radiography and MRI in 10 cases and CT in 8 cases.8 cases were confirmed by operation and pathology.Results 7 femoral heads in 6 cases with early-ANFH were diagnosed by X-ray,21 femoral heads in 15 cases with early-ANFH were diagnosed by MRI and 11 femoral heads in 7 cases were by CT,19 femoral heads showed a typical “line sign”on MRI.Conclusion The “line sign” on MRI is regarded as the characteristic finding in early-ANFH.MRI is the most sensitive method in the early-diagnosis of the corticosteroid-induced ANFH and it can provide important evidence for clinical management.
