An<unk>  is a bone of the foot that occasionally develops abnormally in front of the ankle towards the inside of the foot. This bone is present in approximately 10% of the general population and is usually asymptomatic. When it is symptomatic, surgery may be necessary.
An<unk>  is located posterior to the posteromedial tuberosity of the tarsal<unk>  bone. An<unk>  is present in 4%-21% of the population. It first appears in adolescence. It is more common in female patients. Reported prevalence of bilaterality varies from 50% to 90%.
Accessory navicular bone
Carpometacarpal bossing
Acromioclavicular separation
Intraosseous lipoma
Winged scapula
Bone spur
Unicameral bone cyst
Herniation pit of the femoral neck