Klinke F, Dittrich H, Kujat R
Z Kinderchir. 1981 Jul;33(3):237-43. doi: 10.1055/s-2008-1063125.
Based on 50 consecutive patients whom we operated for funnel chest, we tried to work out the indications for operative correction by developing a scoring system. In this scoring system we considered not only the depth of of the funnel respectively the depth of the impression, but also all the other disturbances of the organs of the chest resulting from the malformation. The possible accompanying deformities of the thoracic cage were taken into account too. The scoring system demands a more stringent indication.