15-year-old female with excellent variants

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Labral tear femoroacetabular impingement.

Long- and short-axis fat- and water-weighted images were performed. 1.5T High Field Oval. 

  • Femoral Head and Hip Joint Proper:
    • Subtle “bump cyst” at the femoral head-neck junction compatible with cam-type femoroacetabular impingement. Slight under coverage of the femoral head. Very subtle labrocapsular stripping.  Intact articular cartilage and ligamentum teres. No acetabular remodeling. 
  • Entrapment Neuropathy:
    • No evidence of entrapment neuropathy in region of lateral femoral cutaneous nerve ilioinguinal space deep adductor space pudendal canal or posteriorly related to the sciatic nerve. 
  • Hamstring Complex:
    • Biceps femoris semitendinosus and semimembranosus are unremarkable. 
  • Tendons:
    • No evidence of injury to iliopsoas rectus femoris or other surrounding tendons including gluteus medius insertion on greater trochanter. No evidence of bursitis.

While a distinct displaced labral tear is not identified an extremely subtle pattern of labrocapsular stripping is beginning to occur. There is evidence of mild femoroacetabular impingement with subtle “bump cyst” complex at the femoral head-neck junction. Alpha angle 68.47 degrees e.g. abnormal. Intact articular cartilage and ligamentum teres. 

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