Title: Iselin disease<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p>
CC: 12yo boy presents with pain to base of 5<sup>th</sup> metatarsal</p>
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Osteochondrosis overuse syndromes associated with development of secondary ossification or apophyseal centers</p>
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<strong>Iselin disease – Osteochondrosis of 5<sup>th</sup> MT base</strong></p>
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Lateral 5th foot pain with weight bearing and activity in early adolescence</p>
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Child may limp or walk on inner part of foot</p>
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Adolescents: Girls >10, Boys >12</p>
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Commonly seen in soccer, basketball, gymnastics and dance</p>
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Exam: Tenderness to palpation at proximal 5<sup>th</sup> MT at peroneal brevis insertion</p>
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Area may show edema and redness</p>
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Pain with foot inversion and resisted eversion and dorsiflexion</p>
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XR: May be normal or show enlargement or fragmentation of epiphysis</p>
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Obliquely oriented small bony fleck at 5<sup>th</sup> MT base. Parallel to long axis of 5<sup>th</sup> MT. Best seen on oblique view. <strong>Unlike fractures which tend to be horizontally oriented.</strong></p>
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Treatment: Immobilize for comfort if severe (walking boot) or simple activity modification if mild. Ice and calf muscle stretching.</p>
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<a href="http://https://images.radiopaedia.org/images/2343487/d3478d2024c845ba0f2fffffd7d51c_big_gallery.jpg">http://https://images.radiopaedia.org/images/2343487/d3478d2024c845ba0f2fffffd7d51c_big_gallery.jpg</a></p>