An ankle sprain is one of the most common musculoskeletal injuries and often occurs after the foot twists or rolls unexpectedly. While many sprains heal with rest, rehabilitation and a gradual return to activity, not every ankle injury follows the same recovery pattern. If pain, swelling or instability persists beyond the expected healing period, the symptoms may not be caused by a simple sprain alone.
Although it is natural to expect some discomfort while an ankle sprain heals, symptoms that continue longer than expected should not be ignored. In some cases, they may be related to another ankle injury that requires further assessment. Understanding what to look out for can help you decide when it may be appropriate to seek medical advice.
Dr Yung Shing Wai
Consultant Orthopaedic Surgeon
Orthopaedic, Foot and Shoulder Surgery
MBBS, National University of Singapore (1985)
FRCSEd (General Surgery), Royal College of Surgeons of Edinburgh, United Kingdom (1990)
FAMS (Orthopaedic Surgery), Academy of Medicine, Singapore (1997)
Key Takeaways
- Persistent ankle pain, swelling or instability is not always caused by a simple ankle sprain.
- Ligament tears, peroneal tendon injuries, cartilage damage and occult fractures can produce symptoms similar to an ankle sprain.
- Symptoms such as the ankle repeatedly giving way, ongoing swelling or difficulty returning to normal activities should not be ignored.
- An ankle doctor can use a physical examination and imaging tests to identify the underlying cause of persistent symptoms.
What Conditions Can Be Mistaken for an Ankle Sprain?
Persistent ankle pain is not always caused by a sprain that is taking longer to heal. Several ankle injuries involving the ligaments, tendons, cartilage or bones can produce similar symptoms, especially in the early stages. If pain, swelling or instability continues despite appropriate treatment, an ankle doctor can assess whether a more complex injury is responsible and recommend appropriate management.
Torn Ankle Ligaments (Chronic Instability)
While most ankle ligament injuries heal with rehabilitation, more severe tears may result in chronic ankle instability. This can cause the ankle to repeatedly "give way", particularly during sports or when walking on uneven ground. Unlike a routine sprain, chronic instability may require structured rehabilitation or, in some cases, surgical ligament repair or reconstruction.
Peroneal Tendon Injuries
The peroneal tendons run along the outer side of the ankle and help stabilise the foot during movement. Injury to these tendons can cause pain and swelling similar to a lateral ankle sprain. However, persistent pain behind the outer ankle bone, a snapping sensation or ongoing weakness may suggest a tendon injury rather than a simple sprain.
Osteochondral (Cartilage) Injuries
An ankle twist can also damage the cartilage and underlying bone within the joint. Unlike a sprain, osteochondral injuries may cause persistent deep ankle pain, catching or locking sensations, or discomfort during weight-bearing activities. These injuries often require MRI for diagnosis because they may not appear on standard X-rays.
Occult Fractures and Bone Bruises
Small fractures and bone bruises can initially resemble an ankle sprain, causing pain, swelling and difficulty walking. If symptoms do not improve as expected or pain remains localised over a bone, further imaging may be needed to identify injuries that were not visible on initial X-rays.
When Should You See an Ankle Doctor for Persistent Symptoms?
Most ankle sprains improve gradually with rest and rehabilitation. However, if your symptoms do not improve as expected or begin to affect your daily activities, it may be a sign that your ankle needs further assessment. Here are some signs that it may be time to see an ankle doctor.
Persistent Pain and Long-Lasting Symptoms
Most ankle sprains improve over time, although recovery varies. Pain, swelling or difficulty walking that persists for several weeks may suggest the injury is not healing as expected.
Your Ankle Keeps Giving Way
An ankle that repeatedly feels unstable or gives way may be a sign of chronic ankle instability. This can increase the risk of future sprains.
Persistent Swelling or Reduced Range of Motion
Swelling and stiffness should gradually improve during recovery. Persistent symptoms or difficulty moving the ankle may point to an underlying injury.
How Are Persistent Ankle Symptoms Evaluated?
Persistent ankle symptoms can have different causes, many of which produce similar signs and symptoms. Assessment begins with a discussion about how the injury occurred, how symptoms have changed over time and whether previous treatment or rehabilitation has helped. The ankle is then examined for swelling, tenderness, range of motion, stability and walking pattern to build a clearer picture of the injury.
If further information is needed, imaging tests such as X-rays, MRI or ultrasound may be recommended to identify injuries involving the ligaments, tendons, cartilage or bone that may not be obvious during a physical examination. Once the underlying cause has been identified, a personalised treatment plan can be developed based on the diagnosis, symptoms, activity level and recovery goals.
Get an Accurate Diagnosis for Persistent Ankle Pain with Dr Yung Shing Wai
Persistent ankle pain, swelling or instability should not automatically be assumed to be part of a slow-healing sprain. As this article has discussed, tendon injuries, cartilage damage, ligament instability and occult fractures can all produce similar symptoms but often require different treatment approaches. Obtaining an accurate diagnosis early may help reduce the risk of ongoing symptoms, recurrent injuries and delays in receiving appropriate treatment.
At SW Yung Orthopaedic Clinic in Singapore, management approaches are guided by a detailed understanding of each patient's symptoms and treatment goals. Led by Dr Yung Shing Wai, patients benefit from extensive clinical experience and management plans designed to support both recovery and long-term mobility. If you continue to experience ankle pain after a fall, even if you are still able to walk, schedule a consultation for guidance towards making more informed decisions about your next steps.
FAQs About Persistent Ankle Symptoms
How long does it take to recover from an ankle sprain?
Recovery time depends on the severity of the injury. Mild ankle sprains may improve within a few weeks, while more severe injuries can take several months to recover. If your symptoms are not improving as expected, it may be a sign of a more complex injury rather than a simple sprain.
Why does my ankle still feel weak months after I sprained it?
Persistent weakness may indicate that the ankle has not fully regained its strength, balance or stability after the injury. It can also be a sign of chronic ligament instability or an undiagnosed tendon injury. A specialist assessment can help identify the underlying cause and determine whether further rehabilitation or other treatment is needed.
Can an MRI detect injuries that an X-ray misses?
Yes. While X-rays are useful for identifying fractures and assessing bone alignment, they do not clearly show soft tissues such as ligaments, tendons and cartilage. An MRI provides more detailed images of these structures and may be recommended if persistent symptoms cannot be explained by X-ray findings alone.
Is it normal for my ankle to click or catch after a sprain?
Occasional painless clicking may occur during recovery, but persistent clicking, catching or locking accompanied by pain or swelling should not be ignored. These symptoms can sometimes be associated with cartilage injuries, tendon problems or loose fragments within the joint, which may require further evaluation.
Will I need surgery for persistent ankle symptoms?
Not always. Many causes of persistent ankle symptoms can be managed with non-surgical treatment, such as physiotherapy, activity modification and medications where appropriate. Surgery may be considered if symptoms persist despite conservative treatment or when the underlying injury is unlikely to heal without surgical intervention.
Meet Our Orthopaedic Specialist in Singapore
Dr Yung Shing Wai
Consultant Orthopaedic Surgeon
Orthopaedic, Foot and Shoulder Surgery
MBBS, National University of Singapore (1985)
FRCSEd (General Surgery), Royal College of Surgeons of Edinburgh, United Kingdom (1990)
FAMS (Orthopaedic Surgery), Academy of Medicine, Singapore (1997)
Dr Yung Shing Wai is an orthopaedic specialist in Singapore with over 30 years of clinical experience and a particular focus on foot, ankle and shoulder conditions. He is recognised as Singapore's first fellowship-trained foot and ankle surgeon and was also among the first fellowship-trained orthopaedic surgeons in the country specialising in shoulder surgery.
After graduating from the National University of Singapore in 1985, Dr Yung obtained his Fellowship with the Royal College of Surgeons of Edinburgh before pursuing sub-specialty fellowship training in Foot and Ankle Surgery and Shoulder Surgery at the University of Washington in Seattle. His extensive training has supported decades of experience in managing a wide range of musculoskeletal conditions and complex orthopaedic concerns.
