To give an overview of non-femoroacetabular forms of hip impingement (includingischiofemoral,
anterior inferior iliac spine/subspine and iliopsoas impingement) doing a review of recent literature. To discuss the role of imaging in the evaluation of atypical forms of hip impingement and illustrate the main radiologic features which will enable us to suggest a more accurate diagnosis.
Femoroacetabular impingement (FAI) is a well known cause of hip pain,
labral tears and early osteoarthritis,
and has been extensively reported in the literature overthe past decade.
The morphological characteristics most commonly associated with FAI include decreased head-neck offset and retroversion of the acetabulum. However,
in the last few years,
other different forms of hip impingement have been increasingly recognized as a potential cause of hip pain and limited function in young...
Findings and procedure details
ISCHIOFEMORAL IMPINGEMENT Ischiofemoral impingement is defined by hip pain related to narrowing of the space between the ischial tuberosity-hamstring tendon unit medially and lesser trochanter laterally,
with intermittent compression of the quadratus femoris muscle (QFM) and associated edema,
tears or fatty replacement.
[3,4] Fig. 1 The ischiofemoral narrowing may be positional,
acquired or congenital. Positional factors that may cause ischiofemoral narrowing include lower extremity...
Hip-groin pain is a day-to-day clinical problem,
and it may be due to many causes. Although less common than classic femoroacetabular impingement,
other atypical forms of hip impingement (includingischiofemoral,
anterior inferior iliac spine/subspine and iliopsoas impingement) have been recently identified as a potential cause of hip pain,
especially in young nonarthritic patients. Knowledge of their clinical features and radiological findings will enable us to suggest a more specific...
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Non–Femoroacetabular Impingement. Semin Musculoskelet Radiol . 2013 Jul;17(3):279-85. 2. de Sa D , Alradwan H , Cargnelli S ,
Extra-articular hip impingement: a systematic review examining operative treatment of psoas,
and greater trochanteric/pelvic impingement. Arthroscopy . 2014 Aug;30(8):1026-41. 3. Sutter R , Pfirrmann CW .
Atypical hip impingement. AJR Am J Roentgenol .
2013 Sep;201(3):W437-42. 4. Taneja AK , Bredella MA ,...