Chondromalacia Patella: Causes and Symptoms

Written by Medicover Team and Medically Reviewed by Dr Shashivardhan , Orthopedics

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Chondromalacia patella, also known as runner's knee, occurs when the cartilage underneath the kneecap softens and deteriorates. The main causes of this condition are usually related to overuse, injury, or abnormal alignment of the kneecap. Activities that involve repetitive bending of the knee, such as running, jumping, or squatting, can put excessive stress on the kneecap and worsen the condition over time.

Additionally, factors like poor muscle strength, tight muscles, or structural issues in the knee joint can contribute to the development of chondromalacia patella. Understanding the underlying causes is crucial in managing and preventing further damage to the knee joint. If you experience persistent knee pain or discomfort, seek medical evaluation for timely diagnosis and treatment.

What are the Types of Chondromalacia Patella?

Chondromalacia patella is classified into different grades based on the severity of cartilage damage beneath the kneecap.

Grade I Chondromalacia Patella: Involves softening of the cartilage under the kneecap.
Grade II Chondromalacia Patella: Characterized by blistering and fraying of the cartilage surface.
Grade III Chondromalacia Patella: Involves deep fissures in the cartilage extending toward the subchondral bone.
Grade IV Chondromalacia Patella: The most severe stage, characterized by exposed bone and significant cartilage loss.

What are the Symptoms of Chondromalacia Patella?

Chondromalacia patella commonly causes pain around the kneecap and may interfere with daily activities and physical exercise.

Persistent knee pain, especially during or after physical activity
Swelling or tenderness around the kneecap
Grinding or popping sensation when bending or straightening the knee
Knee stiffness or discomfort after prolonged sitting
Difficulty climbing stairs, squatting, kneeling, or running

What are the Causes of Chondromalacia Patella?

Several mechanical, structural, and lifestyle factors contribute to the development of chondromalacia patella.

Overuse or repetitive stress on the knee joint
Weak quadriceps or muscle imbalance around the knee
Trauma or injury to the kneecap
Poor biomechanics or abnormal patellar tracking
Tight hamstrings or calf muscles
Improper warm-up or exercise technique
Obesity or excess body weight
Genetic factors and age-related cartilage changes

When to see a Doctor for Chondromalacia Patella?

If you have persistent knee pain or symptoms suggestive of chondromalacia patella, consult an Orthopedic specialist promptly. Early diagnosis and treatment can help reduce pain, improve knee function, and prevent further cartilage damage.

If you experience persistent pain around or behind the kneecap, especially while climbing stairs, squatting, or kneeling.
If your knee pain worsens after prolonged sitting or physical activity.
If you notice swelling, stiffness, or tenderness around the knee.
If you hear or feel grinding, clicking, or popping sounds when bending or straightening your knee.
If your knee feels unstable or frequently gives way.
If you have difficulty walking, running, or performing daily activities because of knee pain.
If your symptoms do not improve with rest, ice, pain medications, or physical therapy.
If your symptoms persist or worsen, consult an Orthopedic specialist promptly for comprehensive evaluation, diagnosis, imaging studies if required, and appropriate treatment.

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How is Chondromalacia Patella Diagnosed?

Chondromalacia patella is diagnosed through a combination of medical history, physical examination, and imaging studies to determine the extent of cartilage damage and rule out other causes of knee pain.

Physical examination to assess knee pain, tenderness, patellar alignment, range of motion, and joint stability.
Assessment of symptoms such as pain while climbing stairs, squatting, kneeling, or sitting for prolonged periods.
X-rays to evaluate bone alignment and exclude fractures or arthritis.
MRI scans to visualize cartilage damage beneath the kneecap and surrounding soft tissues.
Arthroscopy for direct visualization of the patellar cartilage in selected cases.
Evaluation of muscle strength, flexibility, and gait abnormalities contributing to patellar maltracking.

What are the Treatment Options for Chondromalacia Patella?

Treatment aims to relieve pain, improve knee function, reduce inflammation, and prevent further cartilage damage. The approach depends on the severity of symptoms and the extent of cartilage injury.

Physical Therapy: Strengthening the quadriceps and hip muscles, improving flexibility, and correcting movement patterns to stabilize the kneecap.
Pain Relief Medications: Nonsteroidal anti-inflammatory drugs (NSAIDs) or other pain relievers may reduce pain and inflammation.
Activity Modification: Avoiding activities such as running, jumping, kneeling, or deep squatting that worsen symptoms.
Knee Braces or Orthotics: Supportive devices may improve patellar alignment and reduce stress on the knee joint.
Weight Management: Maintaining a healthy weight helps decrease pressure on the kneecap.
Surgical Treatment: Arthroscopic surgery or cartilage repair procedures may be considered for severe cases that do not respond to conservative treatment.