Ankle joint impingement is a condition where soft tissues or bony structures around the ankle become pinched, leading to pain, restricted movement, and swelling. It typically occurs when repetitive stress or injury causes abnormal contact between bones or soft tissues during ankle motion, particularly at the extremes of movement such as deep dorsiflexion (when the foot bends upward) or plantarflexion (when the foot points downward). This condition is commonly seen in athletes who frequently load the ankle joint, such as footballers, dancers, and runners, but can also affect anyone with a history of ankle trauma.
There are two main types of ankle impingement: anterior impingement (at the front of the ankle) and posterior impingement (at the back of the ankle).
Anterior ankle impingement often occurs following recurrent ankle sprains or chronic ankle instability. These injuries may lead to thickening or scarring of the soft tissue at the front of the joint, or the development of bone spurs (osteophytes). This can cause pain when the ankle bends upwards, particularly during activities like walking uphill, squatting, or running.
Posterior ankle impingement is typically caused by repeated forceful plantarflexion, such as in ballet dancers or footballers striking the ball. It may involve soft tissue entrapment or bony abnormalities like an os trigonum—an accessory bone at the back of the ankle. Symptoms usually include pain when pointing the toes or pushing off during running or jumping.
Common causes of ankle impingement include:
Recurrent ankle sprains
Previous ankle fractures or trauma
Chronic overuse in sports or activities involving extreme ankle movement
Structural abnormalities such as bone spurs or accessory bones
Typical symptoms include:
Persistent ankle pain during certain movements
Stiffness or reduced range of motion
Swelling around the ankle joint
A catching, clicking, or locking sensation
Tenderness at the front or back of the ankle
If left untreated, ankle impingement can limit function and lead to chronic pain. Diagnosis is typically made through a combination of clinical examination and imaging, such as X-ray, MRI, or diagnostic ultrasound, to identify soft tissue or bony causes.
Treatment for ankle joint impingement usually starts with non-surgical (conservative) management, with the aim of reducing pain, improving movement, and restoring normal function.
Conservative Treatment
Initial management typically includes:
In some cases, an ankle joint injection may be considered. This can help reduce pain and inflammation, allowing patients to engage more effectively in rehabilitation and progress their recovery.
Surgical Treatment
If symptoms persist despite a structured rehabilitation programme, minimally invasive surgery may be recommended.
This is usually performed using arthroscopy (keyhole surgery), which allows the surgeon to treat the problem through small incisions with a camera for guidance. The procedure can:
Benefits of arthroscopic surgery include:
Recovery
Most patients experience a significant improvement in pain and function following treatment. Return to normal activity can range from a few weeks to a few months depending on the severity of the impingement and the type of treatment required.
Surgery is only considered when conservative care has not been successful, ensuring it is reserved for cases where it is likely to provide meaningful and lasting benefit.
