Pathogenesis Articular cartilage with irregular surface and deep, linear split. Split, irregular articular cartilage . Split, irregular articular cartilage . Articular cartilage is completely eroded down to underlying bone. Gross photograph of partially eburnated femoral head .
Eburnated area is dark, while remaining cartilage is pale.
Head is deformed, with osteophytes at either side. Head is deformed, with osteophytes at either side. First of three gross photographs and x-rays of markedly deformed femoral heads, depicting thinned cartilage and osteophyte formation. Second of three gross photographs and x-rays of markedly deformed femoral heads, depicting thinned cartilage and osteophyte formation.