Current Concepts in Extra-articular Impingement of the Hip: Clinical Diagnosis, Imaging, and Treatment

Koles, Sarah L.; Salat, Peter; Veljkovic, Andrea; Marín-Peña, Óliver; Kassarjian, Ara

doi:10.1055/s-0037-1606140

Cited by 2 publications

(1 citation statement)

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“…Type III prominent AIIS can be easily observed in plain radiographs, mainly in axial and false profile view. However, CT with 3D reconstruction can provide a detailed assessment of AIIS morphology [ 9 , 10 ]. Arthro-MRI or 3Tesla MRI usually complete the imaging protocol.…”

Section: Introductionmentioning

confidence: 99%

The case of ‘A Rhino Horn’: case report and proposal for modification to the Hetsroni and Kelly classification

Marín-Peña

Ayeni

Tey

et al. 2021

Journal of Hip Preservation Surgery

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Subspine impingement syndrome by definition involves a prominent antero-inferior iliac spine (AIIS) which can lead to impingement on the femoral neck thereby causing symptoms. We present the case of a 22-year-old semi-professional athlete who presented with a Type III AIIS morphology leading to subspine impingement syndrome and was managed via a mini open anterior approach. Radiological examination revealed a fairly prominent left AIIS resembling the ‘horn of a rhino’ extending to the trochanteric region anteriorly. A mini-anterior surgical approach was utilized for the resection of the ‘rhino horn’ and the rectus femoris was reattached. The patient remained asymptomatic at the one-year follow-up and had resumed weightlifting. Following this case, we propose a new classification of the type III AIIS morphology in view of the clinical presentation. The AIIS type III-Standard represents an extension from the acetabular rim to less than 1 cm (type III-S) and type III-Large, with an extension from the acetabular rim beyond 1 cm (type III-L). The type III-L will further be divided into two groups based on its relation to the ilium, type III-Lr (‘rib shape’) and type III-Lrh (‘rhino horn’).

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Section: Introductionmentioning

confidence: 99%