Fig. 3.

MRI examples of MTP joints that are swollen upon physical joint examination (PE) with MRI-detected inflammation (a), with intermetatarsal bursitis (b), and without any signs on MRI (c). a A patient with a swollen MTP 4 upon PE and with MRI-detected synovitis and tenosynovitis at the same joint. b A patient with swollen MTP 3 and 4: there is no MRI-detected synovitis, tenosynovitis, or osteitis; there is intermetatarsal bursitis at the 2nd, 3rd, and 4th intermetatarsal spaces. c Patient with swollen MTP 2, 3, and 4 upon PE but no MRI-detected inflammation or intermetatarsal bursitis on MRI