Table 2.

MRI findings in osteomyelitis and non-infected neuroarthropathy

MRI feature	Osteomyelitis	Neuroarthropathy
Location	Phalanges, metatarsal heads, calcaneus, malleolus	Predominantly midfoot (tarsometatarsal, metatarsophalangeal joints)
Distribution	Focal involvement	Several joints/bones involved
Bone marrow signal changes	Around ulcers, fistula tracts,	Periarticular
Adjacent subcutaneous fat signal	Inflamed, sinus tracts, abscess formation	Edematous
Deformity	Usually not seen	Midfoot collapse