Marrow oedema and patchy subcortical enhancement at the dorsomedial aspect of the head of the first metatarsal bone. Subcutaneous enhancement and oedema overlying this region. No evidence of subcutaneous collections to suggest abscess. There is a moderate 1st MTP joint effusion. No sesamoid oedema or enhancement. Hallux valgus deformity. Bone marrow and joint spaces are otherwise unremarkable. No evidence of fractures.