Grice-Green extra-articular subtalar arthrodesis in the treatment of infantile valgus pronated flat foot.

The Grice-Green operation was designed to correct pronated valgus flat foot. Initially, poliomyelitis provided the majority of candidates for this operation. Now, with the disappearance of poliomyelitis, its idiopathic variety in childhood has become the most common indication for this operation, whose effectiveness is universally acknowledged. The present paper is concerned with a quantitative assessment of its corrective potential, but the opportunity has also been taken to investigate more fully the evolution of the bone graft that is interposed as an arthrodesing agent between the talus and calcaneus.