Ace Physiotherapy and Sports in Singapore
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ACE PHYSIO SPORTS
East gate Building, 46 East Coast Road
#08-03 Singapore 428766 -
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Mon to Fri: 08:00am - 8:00pm -
Opening Hours
Sat: 08:00am - 4:00pm
Sunday (By prior appointment)
Os Trigonum Syndrome
What is os trigonum syndrome?
The os trigonum is an accessory (extra) bone that develops between the talus (ankle bone) and the Achilles tendon in some individuals. Os trigonum syndrome refers to any pain or discomfort caused by the presence of this bone.
What causes os trigonum syndrome?
Not everyone has an os trigonum bone, and having one is generally nothing to worry about. Around 10% of the population have this extra bone, and many will never experience any pain or symptoms related to it.
An os trigonum develops during adolescence when the bone fails to fuse properly. Pain usually occurs in individuals with an os trigonum following activities that involve excessive pointing of the toes, such as ballet, trampolining, or kicking in football. Symptoms may arise either from the bone becoming trapped between the ankle and heel bones or from it interfering with the surrounding soft tissue structures.
What are the symptoms of os trigonum syndrome?
The primary symptom of os trigonum syndrome is pain at the back of the ankle, which worsens when pointing the toes. The Achilles tendon may appear swollen and feel tender to the touch. In some cases, a small lump of bone can be felt at the back of the ankle.
An os trigonum is often identified following an ankle injury, such as a sprain. This may indicate true os trigonum syndrome, or it could simply result from a more detailed examination of the foot. In some cases, the injury may be unrelated to the os trigonum and instead be caused by another condition, such as Achilles tendinitis, plantar fasciitis, or, in younger athletes, Sever’s disease.
What should I do if I suspect I have os trigonum syndrome?
If you suspect you have os trigonum syndrome, it is important to rest and allow your symptoms to settle. This includes taking a break from activities that aggravate the condition. It is also helpful to reduce weight-bearing throughout the day, elevate the foot when sitting, and apply ice to the affected area. Gentle compression can also support recovery and help manage swelling.
What shouldn’t I do if I suspect I have os trigonum syndrome?
It is important not to ignore the pain or continue activities that aggravate the condition.
Physiotherapy treatment for os trigonum syndrome
Physiotherapy plays a key role in the treatment of os trigonum syndrome. Our physiotherapists will perform a thorough assessment, gathering detailed information to rule out other conditions and reach an accurate diagnosis. If os trigonum syndrome is suspected, an X-ray may be requested to confirm the diagnosis. Once confirmed, a personalised, non-surgical treatment programme will be developed to relieve symptoms and support recovery.
Treatment for os trigonum syndrome typically includes a prolonged period of rest or modification of activities. The programme may also incorporate joint mobilisation, ultrasound therapy, taping techniques, and targeted stretching and strengthening exercises to support recovery. Additionally, our physiotherapists will provide guidance on the factors that contributed to your injury and advise on strategies to prevent future flare-ups when returning to full activity.
Could there be any long term effects of os trigonum surgery?
If pain persists over a prolonged period or if you experience recurrent problems, your physiotherapist may recommend os trigonum surgery. In this case, you will be referred to an orthopaedic consultant. Surgery involves removing the os trigonum, which can reduce pain and improve range of motion. Post-operative physiotherapy will be essential to support recovery and restore full function.
To arrange an appointment, please call +65 81535374 or visit acephysiosports.com.
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