Making a case for anterior inferior iliac spine/subspine hip impingement: three representative case reports and proposed concept.

Larson, Christopher M; Kelly, Bryan T; Stone, Rebecca M · Arthroscopy · 2011

case_series · Level IV

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Abstract

Femoroacetabular impingement is typically described as occurring due to a conflict between the femoral head-neck junction and acetabular rim. A prior case report described an open decompression of the anterior inferior iliac spine (AIIS) due to impingement against the proximal femur. AIIS impingement may be developmental or the result of a prior AIIS avulsion or pelvic osteotomy. We describe 3 representative cases with minimum 1-year follow-up treated with an arthroscopic AIIS decompression.

Medical subject headings

Anatomy