US and MRI of the Forefoot: Intermetatarsal Bursitis or Morton's Neuroma

The aim of this study is to investigate the incidence of intermetatarsal bursitis and Morton's neuroma in patients with metatarsalgia (i.e. pain in the forefoot) and control subjects by diagnostic imaging with ultrasound and MRI.

Inclusion Criteria:Age > 18 yearsPain in an intermetatarsal space (patient group)Exclusion Criteria:Age <18 yearsOpen wounds or ongoing infection in the forefoot at the time of examinationPersons with contraindications to participate in MRI scanPersons with a history of significant trauma in the forefoot, e.g. any fracture or previous surgeries in the forefootPersons who have previously received treatment for Morton's neuroma in the same foot, e.g. injection (within 6 months) or operation (anytime)Persons with severely impaired renal function (GFR <30 ml/min)Persons with a systemic inflammatory condition like rheumatoid arthritis, due to clinically silent intermetatarsal bursitis in this group (control group)