About the condition
Os Navicular Syndrome
What is Os Navicular Syndrome? Os Navicular Syndrome, also known as accessory navicular syndrome, is a condition that causes pain and inflammation in the foot due to the presence of an extra bone (accessory navicular) located on the inner side of the foot, just above the arch. This extra bone can cause discomfort and affect the function of the posterior tibial tendon, which supports the arch of the foot.
Symptoms
• Pain and swelling on the inner side of the foot, just above the arch.
• Redness and tenderness in the affected area.
• Difficulty wearing shoes due to the prominence of the extra bone.
• Pain that worsens with physical activity.
• Flatter foot type, or developing an adult acquired flat foot
Causes
• Congenital presence of an accessory navicular bone.
• Overuse or repetitive stress on the foot.
• Injury or trauma to the foot.
• Wearing improper footwear.
Diagnosis A podiatrist will diagnose Os Navicular Syndrome based on your medical history and a physical examination of your foot. Imaging tests such as Ultrasound, X-rays, and MRI, scans may be used to confirm the presence of the accessory navicular bone and assess the severity of the condition.
Treatment
Treatment
• Relative Rest: Avoid activities that put stress on your midfoot.
• Symptom management: Apply ice, using analgesics and/or ibuprofen, massage, can help manage short term symptoms.
• Rehab: Perform exercises to strengthen the midfoot and tibialis posterior. A physiotherapist can provide exercises and treatments to help alleviate pain.
• Footwear: Wear supportive shoes with good arch support that do not press on the navicular tuberosity. A positive heel stack can help.
• Orthotics: Use custom orthotic devices to support your feet and reduce pressure on the accessory navicular bone.
• Injections: Corticosteroid injections may be used to reduce inflammation.
• Surgery: In severe cases, surgery may be necessary to remove the accessory navicular bone or repair the posterior tibial tendon.
Prevention
• Wear supportive footwear with a wide toe box.
• Arch supports or orthotics may help if you have a known Os Navicular extra bone.
• Take breaks and rest your feet during activities that put pressure on them.
• Maintain a healthy weight.
