Age / Sex : 39 / F

Age / Sex :39/F

Chief complaint : Right hip pain

1) What is your impression?

Two weeks later, you can see the final diagnosis with a brief discussion of this case.

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avulsion fracture of ASIS

Discussion

Findings:

Plain radiograph and CT; Bone defect at the anterior superior iliac spine with inferior displacement of the fracture fragment.

Differential Diagnosis:  Osteochondroma

Diagnosis: Avulsion fracture of anterior superior iliac spine, Rt.

Discussion: In the pelvis, avulsion injury involves the anterior superior iliac spine is common.  It is the attachment site for the sartorium muscle and the tensor muscle of the tascia lata. This type of injury occurs in sprinters during forceful extension at the hip. Patients present with pain just below the most anterior aspect of the iliac crest. Sometimes the avulsion fragment can be palpated. Such injuries usually heal quickly and without sequelae after simple restriction of activity

References: Stevens MA, El-Khoury GY, Kathol MH, Brandser EA, Chow S. Imaging features of avulsion injuries. RadioGraphics1999; 19:655 -672