What is Chondromalacia Patellae?

Chondromalacia patellae is a condition where the cartilage on the underside of the kneecap (patella) softens or breaks down. This leads to pain and irritation at the front of the knee, especially during squatting, climbing stairs, or sitting for long periods.

It is sometimes called ‘runner’s knee’ and is one of the most common causes of anterior knee pain. Although common in young adults and athletes, it can affect anyone, particularly those with muscle imbalances or altered knee alignment.

What Happens in Chondromalacia Patellae?

The patella glides in a groove at the end of the thigh bone when you bend and straighten your knee. When the cartilage under the patella softens or becomes uneven, the movement becomes rough and painful.

This may result from poor tracking of the patella, muscle weakness, or overuse. Over time, the irritation can lead to inflammation and swelling around the joint.

Common Causes of Chondromalacia Patellae

  • Overuse from running, jumping, or climbing
  • Poor tracking of the patella due to weak quadriceps or tight lateral muscles
  • Flat feet or altered lower limb alignment
  • Muscle imbalance between the quadriceps and glutes
  • Direct trauma to the kneecap
  • Previous knee injury or surgery

Who is Most Affected?

  • Young adults and adolescents involved in sport
  • Runners, cyclists, and gym users
  • Women, due to differences in pelvic width and knee alignment
  • People with flat feet or knock-knees
  • Workers who spend long hours kneeling or squatting

Symptoms of Chondromalacia Patellae

  • Dull ache at the front of the knee
  • Pain when walking upstairs or downhill
  • Discomfort after sitting for long periods (movie sign)
  • Grinding or crunching sound when bending the knee
  • Mild swelling or puffiness around the kneecap
  • Weakness or giving way when standing up

📞 Ongoing kneecap pain or grinding should be assessed at Spinal and Sports Care Bella Vista or Parramatta.

Diagnosis of Chondromalacia Patellae

Clinical Tests

  • Observation of patella tracking during knee bend
  • Pain on kneecap compression (Clarke’s test)
  • Palpation for tenderness under or around the patella
  • Assessment of muscle strength and flexibility

Imaging

  • X-ray: helps identify bone alignment and exclude arthritis.
  • MRI: shows cartilage softening, swelling, and early degeneration.
  • Ultrasound: may be used for detecting inflammation or bursitis.

📞 Spinal and Sports Care can refer for imaging and provide a detailed knee assessment.

Treatment Options

Treatment aims to reduce pain, restore patella tracking, and improve strength.

Non-Surgical Management

  • Physiotherapy: targeted strengthening of the quadriceps and hip muscles.
  • Chiropractic care: joint mobilisation and soft tissue therapy to restore movement.
  • Patella taping or bracing for stability.
  • Corrective exercise for alignment and posture.
  • Ice and anti-inflammatory medication for pain control.
  • Activity modification and structured exercise progression.

Surgical Management

  • Arthroscopy: smoothing damaged cartilage or correcting patella alignment.
  • Realignment surgery: reserved for severe or recurrent tracking problems.

📞 Considering surgery? Spinal and Sports Care can guide your prehabilitation and post-surgical rehabilitation.

Role of Physiotherapy and Chiropractic Care

  • Improve patella tracking through muscle strengthening.
  • Correct lower limb alignment.
  • Release tight muscles affecting knee movement.
  • Educate on load management and return to activity.
  • Support recovery with joint mobilisation and taping.

Recovery Timeline

  • Mild cases: improvement in 4–6 weeks with exercise therapy.
  • Moderate to severe cases: 8–12 weeks or longer, depending on cartilage health.

Prevention of Chondromalacia Patellae

  • Maintain balanced leg strength.
  • Avoid deep repetitive squatting or kneeling.
  • Use correct footwear for sport.
  • Warm up properly and include stretching.
  • Address early knee discomfort to prevent chronic pain.

📞 Spinal and Sports Care offers prevention and strengthening programs tailored for runners, athletes, and active individuals.

Frequently Asked Questions

It is a softening or breakdown of cartilage under the kneecap, causing pain at the front of the knee.

It is caused by poor patella tracking, overuse, or muscle imbalance around the knee.

They are related. Chondromalacia is a structural change; patellofemoral pain may occur before visible cartilage damage.

Yes. Low-impact exercise, such as cycling, swimming, and walking, is safe.

Yes. Targeted strengthening and taping are very effective for recovery.

Yes. Mobilisation and muscle release can restore balance and relieve joint pressure.

Most people recover with conservative care. Surgery is only for severe or unresponsive cases.

Most cases improve within 6–12 weeks of structured rehabilitation.

Yes, if weakness or poor movement patterns return. Ongoing exercise is key.

If front knee pain lasts more than a few weeks or affects sports, work, or daily activity, it may require further investigation.