Table 1.

Urbaniak classification

Class I	Circulation adequate. Standard bone and soft tissue treatment is sufficient
Class II	Circulation inadequate. Vessel repair preserves viability permitting immediate or delayed repair of other tissues
Class III	Complete degloving or completed amputation. Judgement is essential because, although a complete amputation can be revascularised and viability restored, the potential for function is limited. In degloving injuries, the potential for useful function exists, but revascularisation is not easy or may not be possible