Foot morphology in osteoarthritis and hallux valgus

The purpose of this study was to develop statistical shape models from foot radiographs to quantify foot morphology in people with foot osteoarthritis and hallux valgus (HV). The foot is one of the least studied musculoskeletal structures, even though foot pain is a common complaint. Osteoarthritis (OA) and hallux valgus (HV) are two of the most prevalent conditions affecting the foot with morphological changes in skeletal structure observed in both disorders. Structural analysis of these conditions is generally performed using semi-quantitative visual assessment of radiographs. Active shape modelling (ASM), which has been effective for quantifying the effect of osteoarthritis in the hip and knee, may be a useful tool for observing and quantifying changes in foot structure that occur with OA and HV.