Why Does My Ankle Keep Giving Way? Repeated Sprains and Ankle Instability

Short answer: An ankle that repeatedly “gives way”, rolls or feels unreliable may have chronic ankle instability after one or more sprains. However, not every unstable feeling means the ligaments are permanently loose. Reduced balance, strength, reaction time, confidence, pain, tendon injury, cartilage damage and some nerve or muscle conditions can create a similar experience. Assessment should identify why the ankle is failing before treatment is selected.

When a giving-way ankle needs prompt medical assessment

Seek prompt assessment if:

• the ankle has just twisted and you cannot take several steps or there is marked bone tenderness, deformity or rapidly increasing swelling;
• the foot becomes cold, pale, blue, severely numb or suddenly weak;
• there was a snap or pop followed by inability to push off, stand on tiptoe or walk normally;
• the ankle locks and cannot move, or repeatedly catches after an injury;
• the joint is hot, red and very painful, particularly with fever, a wound or feeling unwell;
• giving way is accompanied by progressive foot drop, widespread numbness or loss of bladder or bowel control;
• one calf becomes unexpectedly swollen, warm or painful, or symptoms occur with breathlessness or chest pain.

These features may require evaluation for fracture, dislocation, Achilles rupture, infection, impaired circulation, a blood clot or a neurological condition. For a life-threatening emergency in Singapore, call SCDF 995.^[1]

What does “my ankle gives way” actually mean?

Patients use the phrase in different ways. The distinction matters because treatment for ligament instability is not necessarily the correct treatment for pain-related buckling or weakness.

What is chronic ankle instability?

Chronic ankle instability generally describes ongoing episodes of giving way, recurrent sprains or a sense of instability after a previous lateral ankle sprain. It can include two overlapping components:

• Mechanical instability: injured ligaments or joint structures allow more movement than expected.
• Functional instability: the ankle may feel unreliable because balance, position sense, strength, coordination or rapid protective reactions have not fully recovered.

A patient can have one or both. A ligament that appears abnormal on MRI does not by itself establish how unstable the ankle is during walking or sport. Conversely, a patient can experience genuine giving way even when basic structural tests are not dramatically abnormal.

Why can the ankle remain unstable after a sprain?

The first injury did not fully recover

Pain and swelling may settle before balance, strength and rapid control return. If a person resumes uneven-ground walking, court sport or running based only on pain, the ankle may not yet tolerate those demands. Clinical guidance supports structured rehabilitation that includes range of motion, strength, balance and neuromuscular training rather than relying on rest alone.^[2]

The ligaments healed with residual laxity

The lateral ligament complex is commonly injured when the foot rolls inward. Some ankles retain excessive movement after healing. The relevance depends on symptoms and functional demands: mild laxity may not trouble one person but may be important to someone whose work or sport requires fast direction changes.

Balance and position sense remain impaired

Ligaments and surrounding tissues contribute sensory information about joint position. After injury, protective muscle responses may be less accurate or slower. This helps explain why an ankle can roll before the patient has time to correct it.

Calf, peroneal or foot strength is insufficient

The calf supports push-off, while muscles around the outer and inner ankle help control the foot. Strength should be assessed through a useful range and under appropriate speed and fatigue—not only with a brief seated test.

A tendon problem is being mistaken for a ligament problem

Peroneal tendon injury can cause pain, weakness, swelling or snapping behind the outer ankle. Posterior-tibial tendon dysfunction may affect the inner ankle and arch. Achilles problems can reduce push-off. The site of symptoms and examination findings guide whether ultrasound or MRI would add useful information.

There is an associated joint or cartilage injury

An ankle twist can injure cartilage and underlying bone, create an osteochondral lesion or contribute to impingement. Persistent deep pain, swelling, catching or locking deserves reassessment rather than repeated generic strengthening.

The problem comes from somewhere else

Pain inhibition, generalised joint hypermobility, deformity, arthritis, nerve injury or weakness arising from the leg or spine may affect stability. The treatment plan changes if the ankle is not the primary source.

How is ankle instability examined?

A useful assessment begins with the original injury and what has happened since:

• how many sprains or giving-way episodes have occurred;
• whether episodes happen during daily walking, uneven ground, fatigue or sport;
• where pain and swelling occur;
• whether the ankle catches, locks, snaps or feels weak;
• what rehabilitation, bracing or treatment has already been tried;
• the patient’s work, footwear, sport and return deadline;
• neurological symptoms, diabetes, inflammatory disease and other relevant health factors.

The clinical examination may include walking and footwear, swelling, joint movement, ligament tenderness, anterior-drawer and talar-tilt-type tests, tendon function, calf and foot strength, balance and functional tasks. A hop, landing or direction-change test may be relevant for sport but inappropriate in a painful early injury.

No single manoeuvre provides the whole diagnosis. Findings are interpreted with the injury history, symptoms, side-to-side differences and functional demands.

Do I need an X-ray, ultrasound or MRI?

Not everyone with a giving-way ankle needs imaging. A scan is most useful when it answers a defined question and is likely to change management.

X-ray

X-rays may be considered after acute trauma when fracture criteria are met, or for persistent symptoms when bone alignment, arthritis, an old avulsion injury, impingement or another bone problem is suspected. Weight-bearing views may provide information that a non-weight-bearing image does not.

Ultrasound

Ultrasound can assess selected superficial ligaments and tendons dynamically. It may be helpful for suspected peroneal tendon movement or tear, but its value depends on the clinical question and operator expertise.

MRI

MRI may be considered when instability or pain persists despite appropriate care, when surgery is being discussed, or when there is concern about ligament, cartilage, tendon, occult bone or impingement pathology. The American College of Radiology provides condition-specific imaging guidance for chronic ankle pain.^[3]

An MRI report must still be matched to the patient. Old ligament changes can remain visible after symptoms improve, while functional instability may be substantial without a single dramatic scan finding.

Treatment options for an ankle that keeps giving way

Treatment depends on the cause, severity, previous care, risks and the patient’s priorities. A desk worker seeking confidence for daily walking, a delivery worker on uneven surfaces and a football player returning to competition may require different plans.

Activity modification without complete inactivity

Temporarily reducing high-risk movements can prevent another injury while capacity is rebuilt. This may mean avoiding uneven trails, repeated jumping or rapid direction changes—not necessarily stopping all walking. A graded plan is more useful than an indefinite instruction to “rest”.

Ankle brace or taping

A brace or tape can provide short-term external support for selected patients during work, travel or sport. It may be especially useful when exposure cannot immediately be avoided. Bracing does not restore every deficit, and fit, skin condition, circulation, footwear and the activity must be considered. Clinical guidance supports bracing as one recurrence-reduction option, particularly alongside rehabilitation rather than as its automatic replacement.^[2]

Physiotherapy and progressive rehabilitation

Rehabilitation may address:

• ankle movement and calf flexibility where limited;
• calf, peroneal and foot strength;
• single-leg balance and position sense;
• rapid stepping and protective reactions;
• landing, hopping and direction changes where relevant;
• walking, running or sport technique;
• graded return to work, exercise or competition.

The programme should progress beyond simple resistance-band exercises if the patient’s goal requires speed, fatigue tolerance or unpredictable movement. Manual therapy may help selected movement restrictions, but passive treatment alone does not retrain the ankle’s response to a sudden roll.

Footwear and orthoses

Shoe fit, sole wear, heel height and the demands of the surface may influence risk. An orthosis may be useful for a specific alignment, pressure or associated foot problem, but it is not a universal cure for ankle instability.

Medication and symptom-relief treatments

Simple analgesics or anti-inflammatory medicines may be considered for a painful flare when medically appropriate. They do not correct ligament laxity, cartilage damage or impaired balance. The benefits and risks depend on medical history, other medicines and the intended duration.

Device-based or hands-on treatments may assist pain or movement in selected cases, but they should support a diagnosis-specific plan. Repeatedly reducing pain without restoring control can leave the patient exposed to another sprain.

Injections

An injection is not a routine treatment for ligament instability. It may be discussed for a separately identified painful joint or soft-tissue problem, but the target, evidence, risks and effect on rehabilitation should be clear. Corticosteroid around certain tendons can carry tissue risks, while platelet-rich plasma and other biologic approaches have variable evidence and Singapore regulatory considerations.

Surgical opinion

Surgery may be considered when recurrent symptomatic instability continues despite an appropriate rehabilitation programme, particularly when examination and imaging identify repairable mechanical instability or an associated cartilage, tendon or impingement problem. It is not required merely because an MRI describes an old ligament tear. Expected benefit, recovery time, rehabilitation and the patient’s demands should be discussed.

Which approach fits the patient’s situation?

“I need to return to work next week”

The immediate priorities may be excluding a new fracture or major injury, controlling pain and swelling, choosing appropriate external support, and modifying walking, stairs or uneven-ground exposure. Rehabilitation can begin as tolerated, but a specific recovery time cannot be guaranteed.

“I am not keen on exercise and prefer a passive treatment”

A brace, taping or selected symptom-relief treatment may make activity easier, especially early on. However, if poor balance, strength or reaction time is driving repeated sprains, passive care alone is unlikely to address the full problem. A shorter, highly targeted home programme may be more realistic than an extensive generic routine.

“I already completed physiotherapy but the ankle still rolls”

Reassessment should ask whether the original diagnosis was correct, whether rehabilitation reached the required level, and whether mechanical laxity, tendon or cartilage injury, pain, footwear or a neurological problem was missed. Options may include a revised programme, functional bracing, targeted imaging or a surgical opinion. Repeating an identical unsuccessful programme is not the only choice.

“The ankle feels fine in daily life but fails during sport”

Walking tolerance does not prove readiness for cutting or landing. Sport-specific testing under speed and fatigue can reveal deficits that basic strength tests miss. Return should be based on symptoms, movement quality, confidence and task performance—not time alone.

“I want a scan before doing more treatment”

This preference can be discussed. Imaging is more likely to add value when there is persistent focal pain, swelling, catching, uncertain diagnosis, failure of appropriate rehabilitation or a possible surgical decision. If the main problem is functional control and the examination is otherwise reassuring, a scan may not change the initial plan.

How should progress be measured?

Useful measures include:

• number of giving-way episodes or repeat sprains;
• pain and swelling after normal activity;
• single-leg balance and calf-raise capacity;
• confidence on uneven ground;
• walking, running, hopping or direction-change tolerance;
• ability to complete work or sport tasks;
• need for a brace and response when support is reduced.

“It feels a little better” is useful, but specific functional measures make it easier to decide whether to progress, modify the diagnosis or investigate further.

Integrated doctor and physiotherapy management

The Pain Relief Clinic has in-house physiotherapists who can work with the licensed medical doctor for integrated management. This can help align the diagnosis, need for imaging, symptom-control measures, brace advice, progressive rehabilitation and return-to-work or sport decisions.

Integrated care is particularly relevant when previous physiotherapy has not worked, symptoms suggest more than a routine sprain, or medical and rehabilitation decisions need to be coordinated. Physiotherapists practising in Singapore should be appropriately registered.^[4]

Insurance referrals and supporting paperwork

The clinic can assist with clinically appropriate referrals and supporting paperwork for insurance claims. Coverage, required documents, pre-authorisation and reimbursement depend on the patient’s policy and insurer. A referral, form or medical report does not guarantee approval or payment.

Before imaging or physiotherapy, patients may wish to check whether their policy requires a doctor’s referral, panel provider, pre-authorisation, itemised invoice or medical report.

Frequently asked questions

Can ankle instability heal without surgery?

Many patients improve with diagnosis-specific rehabilitation, activity progression and selected bracing. Surgery may be discussed when symptomatic mechanical instability or associated structural injury persists despite appropriate non-surgical care.

Why does my ankle keep rolling after one old sprain?

The original injury may have left ligament laxity, impaired balance, reduced strength or slower protective reactions. An associated tendon, cartilage or joint problem may also contribute.

Should I wear an ankle brace all the time?

Not automatically. A brace may be useful during higher-risk tasks, but the duration and setting should reflect the diagnosis, skin and circulation, footwear, rehabilitation progress and likelihood of recurrence.

Does a ligament tear on MRI mean I need surgery?

No. Scan findings are interpreted with symptoms, examination, functional demands and response to rehabilitation. An old tear can remain visible without requiring an operation.

Can chronic ankle instability cause arthritis?

Repeated injury and abnormal joint mechanics may contribute to cartilage damage over time, but future arthritis cannot be predicted from the unstable feeling alone. Reducing recurrent injury and assessing persistent joint symptoms are reasonable goals.

How long does ankle-instability rehabilitation take?

There is no single timeline. It depends on the severity and duration, associated injury, starting capacity, treatment consistency and the demands of work or sport. Progress should be judged with symptoms and functional milestones.

Arrange an ankle-instability assessment in Singapore

If your ankle repeatedly gives way, rolls on uneven ground or remains unreliable after a previous sprain, an assessment can examine ligament stability, strength, balance, tendons and joint symptoms, and consider whether rehabilitation, bracing, imaging or another opinion may be appropriate.

The Pain Relief Clinic
350 Orchard Road, #10-00 Shaw House
Singapore 238868
Telephone: +65 9068 9605

Not every investigation or treatment discussed on this page is required, offered or recommended by the clinic. Availability and permissible use of tests, medicines, devices, injections and emerging treatments in Singapore may change with evolving Ministry of Health, Health Sciences Authority and Singapore Medical Council requirements. Individual decisions require clinical assessment and should follow current Singapore regulations and professional guidance.

References

1. Singapore Civil Defence Force. Emergency Medical Services.
2. Martin RL, Davenport TE, Fraser JJ, et al. Ankle Stability and Movement Coordination Impairments: Lateral Ankle Ligament Sprains Revision 2021. Journal of Orthopaedic & Sports Physical Therapy. 2021;51(4):CPG1–CPG80.
3. American College of Radiology. ACR Appropriateness Criteria: Chronic Ankle Pain.
4. Allied Health Professions Council Singapore. Search the register.

Disclaimer: This information is provided for general reference only and should be used in consultation with your licensed medical doctor. It is not a diagnosis or a substitute for personalised medical advice. Seek urgent care for severe, rapidly worsening or warning-feature symptoms.

Reviewed by Dr Terence Tan — 13 September 2026