Table 1.

Potential mechanism for intraosseous invasion of a hydadid disease

Mechanism	Pathophysiology	Affected structures	Effect
Mechanical process	Expansion, compression, dislocation, repression	Surrounding tissues	Atrophy of the bone, atrophy of the vascular nerve tissues, rarefying osteitis
Ischaemic process	Obstruction, compression	Nutrient vessels	Bony necrosis, formation of sequestra
Cellular process	Osteoclast proliferation	Compressed bone tissue	Destruction