[Long-term reflex dystrophy leading to bilateral knee exarticulation].

CRPS 1 is a chronic pain disorder with an as yet not fully understood pathophysiology. The diagnosis is clinical, and the disorder is characterised primarily by pain and skin changes. We present a patient with an aggressively spreading CRPS 1 due to a minor trauma to the right foot, which led to bilateral knee ex-articulation 11 years later. This case report demonstrates the potentially devastating effects of this disorder and the difficulties in treating it.