Choi JY, et al. - Given that the importance of preoperative evaluation of the position and degree of arthritic changes of the medial sesamoid bone before hallux valgus correction is emerging, researchers carried out this observational study to assess the magnetic resonance imaging (MRI) findings of hallux valgus deformity. They also evaluated the severity of and inquired for the factors that impact the arthritic changes in medial sesamoid-metatarsal (mSM) joints. They noted that MRI enabled evaluation of medial sesamoid arthritis. They also observed that the possibility of mSM joint arthritis could be strongly predicted by taking into account the position of medial sesamoid bone on forefoot axial radiographs.