http://www.healio.com/orthopedics/journals/ortho/%7Bb2f0453e-50b4-4cb4-a2fd-8ce50865a677%7D/fracture-of-an-osteochondroma-of-the-femoral-neck-caused-by-impingement-against-the-ischium#

CASE REPORT 

Fracture of an Osteochondroma of the Femoral Neck Caused by Impingement Against the Ischium

Taira Kanauchi, MD; Jun Suganuma, MD; Toshiki Kawasaki, MD; Ryuta Mochizuki, MD; Yutaka Inoue, MD; Shinichi Uchikawa, MD; Kazuya Kitamura, MD; Akio Honda, MD

• Orthopedics
• September 2012 - Volume 35 · Issue 9: e1438-e1441
• DOI: 10.3928/01477447-20120822-36

Abstract

This article describes 2 cases of osteochondroma emanating from the posterior aspect of the femoral neck with a fracture at the base of its stalk caused by impingement between the tumor and the ischium.