Tibialis posterior dysfunction - a contributing factor to forefoot deformities? a parametric study

Toe deformities and dysfunction of the tibialis posterior muscle is common among patients with rheumatoid arthritis. The aim of this study was to investigate potential muscle compensation patterns when the tibialis posterior muscle starts to be less active. Results of the study show that flexor digitorum longus and flexor hallucis longus muscle forces compensates for the weakened tibialis posterior muscle.