The correction of foetal malposition is achieved by applying moxibustion to an acupuncture point on the little toe. In about 60 per cent of women the foetus turns naturally prior to the thirty-fourth week of pregnancy; this can be increased to 90 per cent with the aid of moxibustion. After the thirty-fourth week, when natural version is less likely, the Chinese claim that 80 per cent of foetal malpositions will be corrected permanently by this procedure. Once corrected, the malposition does not recur, provided moxibustion is applied daily. There seems to be no available physiological basis with which to explain this finding.