Roe v Minister of Health [1954] 2 All ER 131 is an English tort law decision of the Court of Appeal of England and Wales which has had a significant influence on the common law throughout the common law world. Roe and another patient underwent surgery in a hospital managed under the general supervision of the Minister of Health. Before entering the operating theatre, an anaesthetic consisting of Nupercaine was administered by means of a lumbar puncture. At that time, it was common practice to store such anaesthetic in glass ampoules immersed in a phenol solution to reduce the risk of infection. Unknown to the staff, the glass had a number of micro-cracks which were invisible to the eye but which allowed the phenol to penetrate. When used, the phenol-contaminated anaesthetic caused permanent paraplegia.