Accessory navicular bone surgery offers a path to pain relief and improved foot mechanics for individuals experiencing symptoms from this extra bone, though like any surgical procedure, it comes with potential risks.
An accessory navicular bone is an extra bone or piece of cartilage located on the inner side of the foot, near the arch. While often asymptomatic, it can cause pain and dysfunction, particularly when irritated by footwear or activities, or if it disrupts the function of the posterior tibial tendon which attaches in this area. When non-surgical treatments fail, surgery may be considered to alleviate chronic pain and restore proper foot function.
Benefits of Accessory Navicular Bone Surgery
The primary aim of accessory navicular bone surgery is to resolve pain and improve the structural integrity and function of the foot. The specific advantages often include:
- Pain Relief: One of the most significant benefits, as surgery targets the source of chronic pain caused by the accessory bone's irritation or its impact on surrounding structures.
- Reconstruction and Preservation of Posterior Tibial Tendon Integrity: The posterior tibial tendon is crucial for supporting the arch of the foot. Surgery often involves addressing this tendon, ensuring its proper reattachment and function, which is vital for long-term foot stability.
- Improvement in the Height of the Foot Arch: By addressing the accessory bone and often the posterior tibial tendon, the procedure can help to restore or improve the natural height and shape of the foot's arch, enhancing biomechanics and support.
Potential Risks and Complications
While generally effective, accessory navicular bone surgery carries specific risks that patients should be aware of. These potential complications include:
- Bone Nonunion: This occurs when the bone parts that are either reshaped or where the tendon is reattached do not heal together properly. This can lead to persistent pain and may require further intervention.
- Navicular Fracture: The navicular bone itself, being closely involved in the procedure, can be susceptible to fracture during or after surgery.
- Bone Destruction: In some cases, there is a risk of damage or loss of bone tissue, which can compromise the structural integrity of the foot.
- Major Trauma: As with any surgical procedure, there is an inherent risk of general surgical trauma, including potential damage to surrounding soft tissues, nerves, or blood vessels, and the typical risks associated with anesthesia.
Summary of Pros and Cons
| Pros of Accessory Navicular Bone Surgery | Cons of Accessory Navicular Bone Surgery |
|---|---|
| Pain relief | Bone nonunion |
| Reconstruction and preservation of posterior tibial tendon integrity | Navicular fracture |
| Improvement in the height of the foot arch | Bone destruction |
| Major trauma |
Recovery Considerations
Following accessory navicular bone surgery, recovery typically involves a period of immobilization, often in a cast or walking boot, followed by physical therapy. The duration of recovery varies depending on the individual, the extent of the surgery, and adherence to post-operative instructions. Successful recovery focuses on restoring strength, flexibility, and full weight-bearing capacity to the foot.
