A combination of physical examination of the arch and<unk>  fascia, as well as ultrasound imaging by a physician is the usual path to diagnosis. An MRI Scan (Magnetic Resonance Imaging) is usually the imaging of choice to determine between other possible conditions such as ganglion cysts. MRI tends to be more accurate than x-ray or ultrasound, showing the full extent of the condition.
Plantar fibromatosis
Morton's neuroma
Infantile digital fibromatosis
Heel pad syndrome
Median rhomboid glossitis
Linguatulosis
Tenosynovitis
Trapeziometacarpal osteoarthritis