Call Us: 1300 975 980

Os Tibiale Externum

Os Tibiale Externum | Mint Foot Care

It is an accessory navicular bone or an extra piece of cartilage located next to the navicular bone in the inner (medial) arch of the foot. It is present at birth but not part of the normal bone structure.

It is present in 10-15% of the population with no symptoms. Often, people with this condition are unaware of it as it causes no problem. However, some may develop a painful condition, characterised by swelling and pain over the bone along the inner arch of the foot, flat feet and difficulty finding comfortable footwear due to the bone rubbing against the shoe. It is most common in females aged 10 to 20 years.

Common signs and symptoms:

  • A bony growth or bump on the arch
  • Throbbing or pain along the arch of the foot during or after stressful exercise or activity
  • Swelling, warmth or redness in the midfoot

Some of the common causes for this condition can be:

  • An injury to the foot or ankle structures
  • Irritation from footwear
  • Overpronation

Os Tibiale Externum Diagnosis and Treatment at Mint Footcare

At Mint Foot Care, a Brisbane Podiatrist will diagnose this condition by physical examination, thorough history and X-ray.


Conservative treatment for Accessory Navicular Syndrome is most common, surgery or more intense forms of treatment may be necessary if nonsurgical care fails or consistent pain continues. Conservative treatment can consist of:

  • Icing and rest
  • Immobilisation with a CAM walker
  • Non-steroidal anti-inflammatory medication
  • Orthotics
  • Exercises or light activity to strengthen


Latest News


    Hammer Toes

    A hammer toe deformity causes your toe to bend or curl downward instead of pointing forward. This deformity can affect any toe on your foot. It most often affects the second or third toe. It usually develops over time due to arthritis, muscular imbalances, wearing ill-fitting shoes, such as tight, pointed heels. The most common causes […]

    Date:6 April 8, 2021

    Toe Walking

    A custom Supra-Malleolar Orthotic (SMO) device with a high heel raise and forefoot lock for a 8 year old patient with sensory toe walking due to global development delay. The SMO has an extension to the toes to block flexion at the forefoot to an extent to prevent toe walking and the high heel raise […]

    Date:6 February 26, 2021

    5 Reasons to Have Orthotics

    Pain Orthotics can help offload areas of pain and redistribute stresses acting on certain muscles or structures in your feet and legs. This will not only help with relieving pain but also allow for recovery. Rehabilitation Orthotics are a great modality to use in combination with rehabilitation as it will help you maintain correct form […]

    Date:6 February 16, 2021


    Warts are infections of the skin that appear as raised bumps, caused by the Human Papillomavirus or HPV. There are many types of warts caused by many different types of HPV. Although most warts are not harmful, they are contagious, ugly, and on occasion – painful. Anyone can be affected by warts, but they are […]

    Date:6 October 29, 2020
  • BONE


    Sesamoids are small bones connected by tendons to muscles most commonly found in the big toe. Sesamoiditis generally happens when those tendons become inflamed. This condition can be the result of overuse, strain, or trauma. High activity sports like netball or dancing, and regular wear of high heels or tight shoes are all contributing factors […]

    Date:6 September 21, 2020
  • BONE

    Osgood Schlatter Disease

    Osgood-Schlatter disease is a common reason for knee pain in developing adolescents. It is the inflammation and irritation of the area just below the knee; where the patella tendon in the knee attaches to the shinbone. It most often occurs during puberty with growth spurts, when bones, ligaments and muscles are rapidly changing. Physical activities […]

    Date:6 September 2, 2020