The accessory navicular (os navicularum or os tibiale externum) is an extra bone or piece of cartilage located on the inner side of the foot just above the arch.

Some people are born with an accessory navicular—an extra bone on the inner center arch of their foot. Most of the time, the condition causes no symptoms and is not noticed until …

Jun 17, 2025 · An accessory navicular, also known as os naviculare or os tibiale externum, is a large accessory ossicle adjacent to the medial side of the navicular bone. The tibialis posterior …

Oct 17, 2023 · What is an accessory navicular? Also known as os naviculare or os tibiale externum, an accessory navicular is an extra bone on the inside of the navicular (the bone in …

Oct 15, 2025 · Acessory Navicular is a common idiopathic condition of the foot that presents with an enlargement of the navicular bone. Diagnosis is made with plain radiographs of the foot …

Accessory navicular bone may cause a continuous stretch and stress on the tibialis posterior tendon which can progress to chronic disabling pain and may cause tendon rupture or …

Oct 5, 2022 · An accessory navicular bone is an extra growth located on the inner side of the foot. Learn about the causes, diagnosis, and treatment of this condition.

What is an accessory navicular bone? Learn about accessory navicular bones, including causes, risk factors, symptoms, diagnosis and treatment from the orthopedic experts at Mercy Health.

Oct 5, 2025 · First described by Bauhin in 1605, the accessory navicular is one of the more common accessory bones of the foot, present in approximately 10–12% of the population. It …

An accessory navicular is an extra bone that occurs in the foot and is a common condition that can sometimes cause pain. It occurs when one of the bones in the foot does not fully unite.