Subtalar arthroereisis

Subtalar Arthroereisis

Children with flatfeet

Subtalar arthroereisis is a surgical procedure used to treat flatfoot deformities, particularly in children. The procedure involves the insertion of an implant into the subtalar joint to limit excessive motion and stabilize the foot.

Anatomy of the Subtalar Joint

The subtalar joint is located between the talus and the calcaneus bones in the foot. It plays a crucial role in foot mechanics, allowing for inversion and eversion movements. This joint is essential for adapting to uneven surfaces and for the overall function of the foot during walking and running.

Diagram of the subtalar joint

Indications for Subtalar Arthroereisis

Subtalar arthroereisis is primarily indicated for patients with pes planus, commonly known as flatfoot. This condition can lead to pain and dysfunction due to the collapse of the foot's arch. The procedure is often considered when conservative treatments, such as orthotics and physical therapy, fail to provide relief.

Surgical Procedure

The procedure involves the insertion of a small implant into the sinus tarsi, a canal located in the subtalar joint. The implant acts as a spacer, preventing excessive pronation of the foot and helping to restore the arch. The surgery is typically performed under general anesthesia and can be done on an outpatient basis.

Postoperative Care

After the procedure, patients are usually advised to limit weight-bearing activities for a few weeks. Physical therapy may be recommended to aid in recovery and to strengthen the muscles supporting the foot. The implant may be left in place permanently or removed after a period of time, depending on the patient's age and the surgeon's preference.

Complications

As with any surgical procedure, subtalar arthroereisis carries potential risks and complications. These may include infection, implant displacement, and persistent pain. It is important for patients to discuss these risks with their surgeon prior to undergoing the procedure.

Outcomes

The success of subtalar arthroereisis varies, with many patients experiencing significant improvement in foot function and reduction in pain. Long-term outcomes are generally positive, especially in younger patients whose bones are still developing.

Related Pages

• Flatfoot
• Orthotics
• Foot anatomy

X-ray of a flatfoot

X-ray of a normal foot

Meary's angle in foot alignment

Calcaneal pitch measurement