Pain & Musculoskeletal

Patellar Tendonitis (Jumper’s Knee): Treatment and Recovery in the UK

6 min readLast reviewed 7 July 2026

Educational information — not medical advice.

This article was prepared by the OnlineDoctor24 editorial team and reviewed for factual accuracy against UK clinical guidance (NHS and NICE). It is not written by a doctor and does not replace personal medical advice. For symptoms specific to you, book an online doctor consultation.

Key points

  • Patellar tendonitis is an overuse injury causing pain in the tendon connecting the kneecap to the shinbone.
  • It is most common in athletes involved in jumping sports like basketball, volleyball, or netball.
  • Early management focuses on the 'POLICE' method and activity modification rather than total rest.
  • Physiotherapy and progressive loading exercises are the gold standard for long-term recovery in the UK.
  • Most cases can be managed at home, but persistent pain should be assessed to rule out more serious tears.
  • Online GP services can provide initial advice, prescribe pain relief, and issue referral letters if needed.

What is Patellar Tendonitis?

Patellar tendonitis, often referred to as 'jumper’s knee', is an inflammation or injury of the patellar tendon. This crucial band of tissue connects the bottom of your kneecap (patella) to your shinbone (tibia). It works with the muscles at the front of your thigh to extend your knee so you can kick, run, and jump.

In the UK, this condition is formally known in medical settings as patellar tendinopathy. The term 'tendinopathy' is increasingly preferred because many cases involve long-term wear and tear (degeneration) rather than just acute inflammation. While it is synonymous with high-impact sports, it can affect anyone who suddenly increases their physical activity levels or spends a lot of time walking on hard surfaces.

Recognising the Symptoms of Jumper's Knee

The primary symptom is pain directly over the patellar tendon, which is the area just below the kneecap. Patients often describe the pain as a dull ache that becomes sharp during specific movements.

  • Pain during activity: Sharp pain when jumping, running, or even walking.
  • Stiffness: Particularly in the morning or after sitting for long periods.
  • Swelling: You might notice slight puffiness or thickening around the tendon.
  • Tenderness: The area feels sore to the touch, especially at the point where the tendon meets the kneecap.

According to NHS clinical pathways, the pain often follows a pattern: it may start only after exercise, progress to pain during exercise, and eventually interfere with daily activities like climbing stairs or sitting in a car.

Common Causes and Risk Factors

The main cause of patellar tendonitis is repetitive stress. When the tendon is repeatedly overloaded—typical during jumping and landing—tiny tears occur. If the body cannot repair these tears fast enough, the tendon becomes painful and weakened.

Risk factors for UK patients include:

  • Hard surfaces: Playing sports on concrete or old indoor courts with poor shock absorption.
  • Footwear: Using worn-out trainers that do not provide adequate support.
  • Muscle imbalances: Having tight quadriceps or hamstrings can increase the tension on the patellar tendon.
  • Sudden increase in intensity: Rapidly increasing the duration or frequency of workouts without a proper 'lead-in' period.

NHS-Aligned Treatment Options

Treatment for jumper's knee follows a conservative approach initially, as recommended by NICE (National Institute for Health and Care Excellence) guidelines. Surgery is rarely required and is only considered after 6–12 months of unsuccessful rehabilitation.

Self-Care and POLICE

The traditional RICE method has been updated to POLICE (Protection, Optimal Loading, Ice, Compression, Elevation). 'Optimal Loading' is the most critical part; rather than complete bed rest, you should engage in pain-free activity to keep the tendon resilient.

Physiotherapy

This is the cornerstone of recovery in the UK. A physiotherapist will focus on eccentric exercises—slowly lowering a weight—which have been proven to help the tendon heal and thicken. Common exercises include 'decline squats' or heavy slow resistance training.

Medication

Over-the-counter pain relief such as paracetamol can help. Non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen may be used in the short term, though some clinicians advise caution as they might interfere with the long-term healing process of the tendon.

When to Speak to an Online Doctor in the UK

If you are experiencing persistent knee pain that does not improve with two weeks of self-care, it is advisable to seek medical advice. Speaking to an online GP can be an efficient way to start your recovery journey without waiting for an in-person appointment.

An online consultation allows you to discuss your symptoms, activity levels, and medical history. The doctor can assess the likelihood of patellar tendonitis and rule out other conditions like bursitis or osteoarthritis. They can also:

  • Provide a clinical diagnosis based on the history of your injury.
  • Prescribe stronger anti-inflammatories or topical gels if appropriate.
  • Advise on the best private or NHS physiotherapy pathways in your local area.
  • Issue a sick note if your job involves heavy lifting or standing that is aggravating the injury.
  • Write a referral letter if you require a secondary scan, such as an ultrasound or MRI, to check for significant tendon tears.

Long-Term Prevention and Recovery

Recovery times vary. Mild cases may resolve in a few weeks, while chronic tendinopathy can take 3 to 6 months of dedicated rehab. To prevent recurrence, ensure you always warm up before exercise and invest in high-quality footwear suited to your gait. Regular stretching of the quadriceps and calves is also vital to reduce the load on the knee joint.

Red flags — when to seek urgent help

Call 999 or go to A&E if you experience any of the following:

  • Sudden, severe pain accompanied by a 'popping' sound.
  • The kneecap appears shifted out of place or you cannot straighten your leg.
  • Severe swelling, redness, and a high temperature (fever).
  • The knee 'gives way' or feels completely unstable when you try to stand.

Frequently asked questions

Common questions UK patients ask about patellar tendonitis (jumper's knee).

How an online doctor can help

This article is for general information only and does not replace personal medical advice from a qualified doctor. Content is reviewed against UK NHS and NICE guidance by the OnlineDoctor24 editorial team and is not authored by a medical doctor. If your symptoms worsen or you are unsure, please book a consultation with a GMC-registered GP.

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