A small bursa is present between the insertion of the tibialis posterior tendon and the medial surface of the navicular tuberosity, reducing friction as the broad fan-shaped tendon fans out to its multiple insertion sites. The bursa is particularly relevant at the navicular tuberosity, where the primary tendon slip inserts against a bony prominence.
| Location | Between the tibialis posterior tendon and the medial surface of the navicular tuberosity at its insertion |
|---|---|
| Nearby |
Reduces friction between the tibialis posterior tendon and the navicular tuberosity at its insertion
Accessory navicular syndrome involves a prominent accessory ossicle at the navicular tuberosity where the tibialis posterior tendon inserts, most often the type II form joined to the navicular by a synchondrosis. The bursa between the tendon and the ossicle or tuberosity becomes inflamed by direct shoe pressure and repetitive tendon loading, producing medial midfoot pain and swelling. Ultrasound or MRI shows bursal fluid and helps distinguish bursitis from tibialis posterior tendinopathy at this level. Wider footwear, padding, orthotics and corticosteroid injection are first-line, and the Kidner procedure (excision of the ossicle with advancement of the tibialis posterior insertion) is performed when conservative measures fail.
Friction bursitis between the tibialis posterior tendon and a prominent accessory navicular produces medial midfoot pain and tenderness directly over the navicular tuberosity, exacerbated by footwear pressure and managed with orthotics, padding, and surgical ossicle excision when conservative management fails.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
