Limbus labrum

A limbus labrum is as an enlarged and deformed acetabular labrum, which covers the lateral margin of a subluxed femoral head.

Seen in children and young adults.

It is a proliferative fibrous-tissue response at the junction of the labrum and outer wall of the acetabulum. It develops in response to the chronic eversion of the labrum and abnormal non-physiological positioning of the hip.

The histological examination of excised tissue show reparative granulation, capillary proliferation, and organized thrombi within limbus.

  • thickened, enlarged labrum with heterogeneous signal on both T1WI and T2WI (as opposed to normal labrum, which is hypointense on both T1WI and T2WI).
  • additional findings of DDH and Perthes disease may be seen
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Article information

rID: 68886
Tag: cases, refs
Synonyms or Alternate Spellings:

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