Ankle Cartilage Injury

Ankle cartilage injury occurs when the smooth, protective tissue cushioning the joint between the tibia, fibula, and talus is damaged. This specialised tissue allows fluid movement during walking, running, and other activities. Because cartilage does not heal effectively, damage can lead to persistent pain, swelling, and reduced mobility, affecting daily function and physical performance.

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Dr. Chok Aik Yong
MBBS | MRCS (UK) | MMed (Surgery) | FRCS (UK)

Symptoms of Ankle Cartilage Injury

Ankle cartilage injuries can cause symptoms that develop suddenly after an injury or gradually over time.

Pain During Movement

Discomfort occurs while walking, running, or moving the ankle joint, particularly when bearing weight or during push-off movements.

Joint Stiffness

The ankle becomes rigid and restricted, especially in the morning or after periods of inactivity.

Swelling

The ankle joint develops noticeable swelling that may worsen with activity and improve with rest.

Clicking or Catching

Irregular cartilage surfaces can cause audible or noticeable mechanical sensations during movement.

Reduced Range of Motion

The ankle’s movement capacity becomes limited, affecting standard walking patterns.

Instability

The ankle feels unsteady or gives way, mainly when walking on uneven surfaces.

Causes and Risk Factors

Several factors can contribute to ankle cartilage injuries, ranging from acute trauma to chronic conditions.

  • Acute Trauma

    Direct impact, severe sprains, or fractures can damage the cartilage surface during sports or accidents.

  • Repetitive Stress

    Regular high-impact activities place continuous stress on the ankle joint, gradually wearing down the cartilage.

  • Previous Ankle Injuries

    Prior ankle sprains or fractures increase the risk of developing cartilage damage in the affected joint.

  • Athletic Activities

    Sports involving jumping, rapid direction changes, or frequent ankle loading affect cartilage health over time.

  • Anatomical Factors

    Misalignment of the ankle joint or differences in leg length can cause uneven cartilage wear.

Types of Ankle Cartilage Injuries

Chondral Injuries

Damage is limited to the cartilage layer without affecting the underlying bone. Injuries range from small cracks to complete cartilage loss, exposing the bone beneath. These often result from direct trauma and can worsen without treatment.

Osteochondral Injuries

Both cartilage and the underlying bone are affected. This may lead to a cartilage fragment and bone becoming partially or fully detached. Severe sprains or high-impact trauma are common causes of these injuries, which can result in loose fragments within the joint.

Degenerative Cartilage Wear

Cartilage gradually thins and deteriorates, often affecting multiple joint areas. Age, previous injuries, and mechanical stress contribute to this progressive wear.

Diagnostic Methods

  • Physical Examination: The ankle’s mobility, stability, and pain response are evaluated through specific movement tests. These include checking for joint tenderness, measuring range of motion, and assessing gait.
  • MRI Scan: Magnetic Resonance Imaging provides detailed views of cartilage and underlying bone. It helps determine the size, depth, and location of cartilage damage. Specialised MRI sequences can enhance cartilage visualisation.
  • CT Scan: Computed tomography captures cross-sectional images of the joint, helping assess associated bone injuries. CT arthrography, which involves injecting contrast dye, provides additional detail on cartilage surface irregularities
  • Arthroscopy: This minimally invasive procedure allows direct visualisation of the cartilage through small incisions. While primarily used for treatment, it can also assess the extent and condition of cartilage damage.

Treatment Options

The treatment approach for ankle cartilage injuries depends on injury type, size, location, and patient activity level.

Non-Surgical Treatment

  • Activity Modification: Reducing high-impact activities relieves joint stress and allows recovery. Low-impact alternatives such as swimming or cycling help maintain fitness without aggravating symptoms.
  • Physical Therapy: Structured exercise programmes focus on strengthening ankle muscles and improving joint stability. Rehabilitation focuses on restoring movement while minimising further cartilage damage.
  • Bracing and Support: External supports help stabilise the ankle during daily activities. These devices reduce stress on damaged cartilage areas while allowing controlled movement.

Surgical Treatment

  • Cartilage Repair: Small, isolated defects may be treated with microfracture or drilling techniques, which stimulate repair tissue formation by creating small holes in the bone beneath the damaged cartilage.
  • Osteochondral Grafting: This technique replaces damaged cartilage and bone with healthy tissue from a less weight-bearing area or a donor. The procedure restores the joint surface in cases of more profound osteochondral injuries.
  • Cartilage Regeneration: Biological treatments use tissue engineering techniques to grow new cartilage. This involves harvesting and reimplanting the patient’s cartilage cells or using synthetic scaffolds.

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Prevention and Management

Strengthening exercises improve joint stability, while proper footwear provides support and cushioning. Following rehabilitation and gradually resuming activity after injury lowers the risk of re-injury. Managing weight minimises joint stress, and maintaining adequate alignment protects cartilage. Correct technique in sports and exercise helps distribute forces evenly across the ankle.

Frequently Asked Questions (FAQ)

How long does recovery take after cartilage surgery?

Recovery typically spans 3-6 months, depending on the surgical procedure and extent of injury. The initial 6-8 weeks focus on protecting the repair site, followed by progressive rehabilitation to restore strength and function.

Can I continue playing sports with ankle cartilage damage?

Return to sports depends on injury severity and chosen treatment. Many athletes return to their sport after appropriate treatment and rehabilitation, though some may need to modify their activity level or technique.

What happens if cartilage damage is left untreated?

Untreated cartilage injuries often progress, potentially leading to more widespread joint damage and early osteoarthritis. The irregular joint surface can cause additional wear on surrounding cartilage areas.

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Dr. Chok Aik Yong

MBBS|MRCS (UK)|MMed (Surgery)|FRCS (UK)

Expertise lies in managing colorectal diseases, particularly advanced colorectal cancer and inflammatory bowel disease.

  • Dr Chok graduated with degrees in Bachelor of Medicine and Surgery from the National University of Singapore. He was conferred the Master of Medicine (Surgery) in Edinburgh (UK) and a member of the Royal College of Surgeons, UK. He subsequently completed his specialist training in colorectal surgery and became a Fellow of the royal college of Surgeons in Edinburgh in 2016.
  • Dr Chok was awarded the Health Manpower Development Plan (HMDP) award in 2019 to further advance his colorectal training at Royal Marsden Hospital, one of the top 5 cancer centres in the world. While in London, Dr Chok trained with pioneers in the surgical management of advanced colorectal cancer and inflammatory bowel disease (IBD) and gained extensive experience while appraising the latest clinical and research evidence.
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