The sinus tarsi is the miniature bony canal that moves up to the ankle beneath the talus ankle bone. Any harm to the sinus tarsi might be due to overuse or a sprained ankle.
https://www.youtube.com/watch?v=rO58tCyQR4Y
What are the indications?
- Pain that is difficult to pinpoint but usually in front of the bony bit on the exterior of the ankle
- Tenderness at the opening point of the sinus tarsi found on the exterior of the ankle
- Discomfort or difficulty in running on a curve on the side of the affected ankle.
Pain that is difficult to pinpoint but usually in front of the bony bit on the exterior of the ankle. - Pain is triggered if the ankle is inverted or moved inwards
An injection of an anesthetic into the sore sinus tarsi will verify a diagnosis by alleviating the discomfort and tolerating normal function. An MRI might also indicate excess fluid in the sinus tarsi canal.
Management
The individual should rest from all activities that can trigger the pain. If training is continued despite the pain, it can worsen the injury or prevent healing. Apply an ice pack to minimize the pain and inflammation. It should be applied 10-15 minutes hourly initially if the pain is intense but should be reduced to 3-4 times throughout the day as needed.
The doctor might prescribe non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen. Ultrasound might also be considered to minimize the swelling and inflammation.
As part of the rehabilitation program, movement of the subtalar joint is an important component. If overpronation is an issue, it must be corrected using orthotic insoles as well as using the proper running shoes.
Additionally, strengthening exercises for the ankle specifically proprioceptive routines such as using a wobble board. These exercises can prevent re-injury of the ankle in the future.