What is Sinus Tarsi Syndrome?
The sinus tarsi (sometimes referred to as the eye of the foot) is a tunnel-like cavity between the calcaneus (the heel bone) and the talus (the bone that makes up the lower part of the ankle) on the lateral aspect of the foot. This space contains ligaments and other connective tissues that aid in the ankle joint’s mobility and overall stability.
Sometimes, due to injury, strain, or repeated, continuous motion, a person may develop a condition known as sinus tarsi syndrome (STS). Typically, STS is a term given to chronic pain in the foot’s lateral area between the ankle and heel.
Symptoms of STS often include:
- Chronic pain on the anterior side of the ankle
- Imbalance or feelings of instability
- Bruising
- Swelling
- Tenderness
What Causes Sinus Tarsi Syndrome?
Most commonly, sinus tarsi syndrome is a result of repeated ankle sprains. However, any activity or motion that puts excessive stress on the area can contribute to STS. For some, their daily occupation may overwork the Sinus Tarsi area. For others, improper footwear is a major contributing factor to the condition.
How is Sinus Tarsi Syndrome Treated?
Fortunately, the majority of STS cases are not serious and are easily treatable at home. With an appropriate care routine, the symptoms of sinus tarsi syndrome usually begin to fade in a matter of weeks. However, more severe cases may need professional medical attention.
Here are a few methods you can use to help alleviate the pain, swelling, and tenderness.
Mild Cases
OTC medications – Over-the-counter anti-inflammatory medications can work wonders for bringing down swelling and tenderness.
Thermal treatment – Heat/ice treatment is a great way to target both swelling and pain simultaneously. For the best results, begin by icing the foot for a few days or until the swelling starts to go down, then switch to a hot compress to alleviate any tension-related pain in the affected area.
Immobilization – Rest is the most effective method in treating sinus tarsi syndrome. Your overused feet need time to recover. Taking a few days to rest and elevate your feet can significantly reduce inflammation.
Compression – To prevent any further swelling, The Mayo Clinic recommends wrapping the ankle with an elastic bandage. “Begin wrapping at the end farthest from your heart” to avoid cutting off circulation.
Severe Cases
Custom orthotics – Individuals with fallen arches and flat feet are more susceptible to STS. A set of professionally molded custom orthotic inserts can support areas of the foot that your everyday shoes can’t.
Steroid injections – In persistent sinus tarsi syndrome cases, professionally administered steroid injections into the sinus tarsi canal can alleviate pain and inflammation for up to 12 weeks.
Corrective surgery – If all other methods fail to bring relief to your STS, your podiatrist may recommend surgery. The type of operation will vary depending on the root cause of your condition. In some cases, scar tissue may need to be removed. In others, flat foot reconstruction may bring relief.
Expert Podiatric Care in Fresno, Visalia, and Porterville
If you have questions about sinus tarsi syndrome or need help finding the best treatment option, please schedule an appointment with us today! Our team of expert podiatrists here at Canyon Oaks Foot and Ankle care about your well-being and are ready and willing to do whatever it takes to get you back on your feet.
