Research progress on quantitative evaluation of ischiofemoral impingement syndrome by magnetic resonance imaging
Ischiofemoral impingement syndrome (IFI) is a type of extra-articular hip impingement that is more common than anticipated,the lack of specificity in clinical presentation makes,it easily confused with other conditions like piriformis syndrome and lumbar disc herniation. MRI is capable of measuring dimensions and angles associated with IFI and can also provide quantitative or semi-quantitative assessments of the size and signal intensity of the relevant skeletal muscles,making it the preferred diagnostic modality for IFI. Range of motion MRI helps to reduce the impact of positional factors on morphological parameters,improving the sensitivity and accuracy of IFI diagnosis;the combined application of dynamic MRI and three-dimensional MRI can obtain functional information of IFI-related anatomical structures during actual movement,while more truly reflecting the spatial relationship of anatomical structures in three-dimensional space,which will further improve the comprehensiveness and accuracy of diagnosis. Functional MRI (fMRI) can measure the water molecule diffusion,microcirculation status,the extent of fat infiltration,muscle fiber orientation,and metabolic levels of the quadratus femoris and hip abductor muscles,making precise diagnosis and prediction of IFI,as well as monitoring of movement function,possible,and is expected to become a new research direction for the clinical diagnosis and treatment of IFI. This review will elaborate on the application of various MRI and fMRI technologies in the quantitative assessment of IFI,summarize their advantages and disadvantages,and provide references for the comprehensive and precise assessment of the occurrence,progression,and outcome of IFI using multi-parameter joint application of MRI and fMRI.
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