Patellar Tracking Disorder: Symptoms, Exercises and UK Treatment Options

Patellar tracking disorder is a common musculoskeletal condition where the patella (kneecap) does not glide smoothly within the trochlear groove of the femur (thigh bone). Instead of moving straight up and down, it may shift toward the outside of the knee. This misalignment leads to uneven pressure on the cartilage behind the kneecap, resulting in inflammation and pain.

In the UK, this is often discussed alongside Patellofemoral Pain Syndrome (PFPS). It is particularly common among runners, cyclists, and those who have recently increased their physical activity levels. While it is rarely a medical emergency, chronic tracking issues can lead to long-term wear and tear of the knee joint if left unaddressed.

Patients in the UK typically describe a range of sensations that point toward tracking issues. Recognizing these early can help prevent the condition from worsening. Key symptoms include:

• Anterior knee pain: A dull, aching pain felt specifically at the front of the knee or behind the kneecap.
• Pain during activity: Symptoms often flare up when walking down stairs, squatting, or sitting for long periods (sometimes called 'theatre sign').
• Popping or grinding: A sensation known as crepitus, where the knee feels 'crunchy' or makes noise during extension.
• Sensation of instability: A feeling that the knee might 'give way' or buckle, though it rarely does so completely.

Because these symptoms can overlap with other conditions like bursitis or meniscus tears, a structured clinical assessment is essential.

Why does the kneecap stop tracking correctly? For most British patients, it is a combination of anatomical factors and lifestyle habits. Common causes include:

1. Muscle Imbalance

The most frequent cause is a weakness in the Vastus Medialis Obliquus (VMO), the teardrop-shaped muscle on the inner thigh. If this muscle is weak compared to the outer thigh muscles (the Vastus Lateralis), the kneecap is pulled laterally out of its groove.

2. Sudden Increase in Activity

Moving from a sedentary lifestyle to intense training—such as starting a 'Couch to 5K' programme—can overload the joint before the supporting tissues have time to adapt.

3. Anatomical Variations

Some individuals have a naturally shallow trochlear groove or a higher-than-normal kneecap (patella alta). Additionally, excessive 'pronation' (flat feet) can cause the leg to rotate inwards, forcing the kneecap out of alignment.

4. Poor Footwear

Worn-out trainers or high heels that do not provide adequate arch support can disrupt the kinetic chain from the ankle to the knee.

NICE (National Institute for Health and Care Excellence) guidelines suggest a conservative approach for managing patellofemoral issues. Most patients will not require surgery. Treatment usually involves:

• PEACE & LOVE Protocol: The modern replacement for RICE, focusing on protection, elevation, avoiding anti-inflammatories for the first 48 hours, and later, loading the joint progressively.
• Physiotherapy: The 'gold standard' for tracking issues. A specialist can provide exercises to strengthen the VMO and stretch tight IT bands.
• Orthotics: Supportive insoles can correct overpronation and improve the angle of the knee during walking.
• Taping and Bracing: Kinesiology tape or a patellar stabilising brace can help hold the kneecap in place during sport.
• Pain Management: Paracetamol or topical NSAIDs (like ibuprofen gel) may be recommended for short-term relief.

Rehabilitation focuses on 'quadriceps retraining'. These exercises are often recommended by NHS physiotherapists:

1. Straight Leg Raises

Lying on your back with one leg bent, lift the other leg straight up to the height of the opposite knee. This builds the quadriceps without putting pressure through the joint.

2. Wall Squats with a Ball

Place a small exercise ball between your knees while performing a shallow wall squat. Squeezing the ball activates the VMO muscle effectively.

3. Clamshells

Lying on your side with hips stacked, lift your top knee while keeping your feet together. This strengthens the gluteus medius, which controls the rotation of the thigh.

4. Terminal Knee Extensions (TKEs)

Using a resistance band looped behind the knee, move from a slight bend to a fully straight leg to engage the final degrees of muscle contraction.

If you are struggling with persistent knee pain, you may wonder when is the right time to speak to a GP online. An online consultation is a convenient way to discuss your symptoms, especially if they are affecting your work or daily life.

An online doctor can:

• Assess your history to differentiate tracking issues from ligament injuries.
• Provide clinical advice on the best over-the-counter treatments.
• Issue a private referral letter for a UK physiotherapist or orthopaedic specialist.
• Provide a sick note (MED3) if your knee pain prevents you from performing your job (for example, if you work in a manual or standing role).
• Recommend specific imaging, like an X-ray or MRI, if they suspect a more complex underlying issue.