Patellar tendinopathy is one of the most common overuse injuries in sport - and one of the most frustrating to manage. It rarely forces you to stop training entirely, but ignoring it makes it significantly worse. Here is what is actually happening in the tendon, what helps and how to keep training without making it worse.
First - an important note. This article is for educational purposes only and is not a substitute for professional medical advice. If you are experiencing persistent, severe or worsening knee pain, see a physiotherapist or sports medicine professional before continuing to load through it.
With that said - here is a practical, honest breakdown of patellar tendinopathy and how athletes manage it.
What Is Patellar Tendinopathy?
Patellar tendinopathy - sometimes called patellar tendinitis or jumper's knee - is a condition affecting the patellar tendon, the thick band of connective tissue that runs from the bottom of the kneecap down to the shinbone.
The patellar tendon's job is to transmit the force generated by the quadriceps muscles through the knee and into the lower leg. Every time you squat, jump, run, lunge or climb stairs, the patellar tendon is under load. When that load exceeds the tendon's capacity to absorb and recover from it - repeatedly, over time - the tendon begins to break down at a cellular level.
The result is pain, typically felt just below the kneecap at the top of the tendon where it attaches to the patella. In some cases the pain is felt lower down, at the point where the tendon attaches to the shinbone.
Crucially - patellar tendinopathy is not an inflammatory condition in the traditional sense. Research over the last two decades has shown that the primary issue is tendon degeneration rather than acute inflammation. This is an important distinction because it affects how the condition should be managed and what treatments actually help.
What Causes It?
Patellar tendinopathy is an overuse injury. It develops when load accumulates faster than the tendon can adapt and recover. The most common triggers include:
- A sudden increase in training volume or intensity - starting a new squat programme, increasing weekly mileage quickly or adding new high-impact activities
- High volumes of jumping, landing and repeated knee flexion under load - common in CrossFit, basketball, volleyball and running sports
- Insufficient recovery between heavy loading sessions
- Weakness in the quadriceps, hamstrings or glutes that causes the patellar tendon to absorb forces it would otherwise share with surrounding musculature
- Training on hard surfaces without adequate footwear or preparation
It is particularly common in athletes who train hard and recover insufficiently - which, frankly, describes a large proportion of serious amateur athletes.
How to Know If It Is Patellar Tendinopathy
The classic presentation of patellar tendinopathy is recognisable:
- Pain localised to the bottom of the kneecap or along the patellar tendon
- Pain that is worst at the start of activity, eases as the tendon warms up during exercise and returns after training or the following morning
- Tenderness when you press directly on the patellar tendon just below the kneecap
- Pain that worsens with squatting, jumping, running downstairs or any repeated loading of the knee
- Stiffness in the tendon after prolonged sitting or first thing in the morning
If the pain is severe, accompanied by swelling, came on after a specific incident or is getting progressively worse rather than fluctuating with load, see a physiotherapist. Those presentations suggest something other than straightforward tendinopathy.
What Actually Helps - and What Does Not
What helps
Load management - reducing the volume and intensity of the activities that are most aggravating while keeping the tendon loaded through less provocative exercises. Complete rest is rarely the answer for tendinopathy and often makes things worse by further reducing the tendon's load tolerance.
Isometric exercise - holding a static squat or leg extension position at around 60 degrees of knee flexion for 30-45 seconds has been shown in research to provide immediate pain relief and is a well-supported early management strategy for patellar tendinopathy.
Heavy slow resistance training - progressive loading of the quadriceps and patellar tendon through controlled, slow tempo exercises. Leg press, squats and step-ups performed slowly with progressive load over weeks have the strongest evidence base for long-term tendon remodelling and recovery.
Patella straps - a patella strap worn just below the kneecap applies focused compression to the patellar tendon during activity, altering the forces transmitted through the tendon and reducing pain during loading. For many athletes, a quality patella strap is the difference between being able to train through a tendinopathy flare and being sidelined by it.
Sleep and nutrition - tendons are slow to heal relative to muscle tissue. Adequate sleep and sufficient protein intake are not optional extras during tendon rehabilitation - they are the raw materials the body needs to rebuild tendon structure.
What does not help
Complete rest - removing all load from the tendon reduces its capacity to handle load further, which makes returning to training harder and increases the risk of re-aggravation. Relative rest - reducing load without eliminating it - is almost always more effective.
Stretching the tendon aggressively - contrary to what many athletes assume, aggressive stretching of an already irritated tendon can worsen symptoms. Gentle range of motion work is fine but deep, sustained stretches directly on the tendon are not recommended during a flare.
Anti-inflammatories as a long-term solution - because patellar tendinopathy is primarily degenerative rather than inflammatory, anti-inflammatory medication addresses the symptom rather than the underlying issue. Short-term use for pain management is reasonable but it does not treat the tendon.
Ignoring it and hoping it resolves - the most common mistake. Patellar tendinopathy that is not managed appropriately becomes chronic. Chronic tendinopathy is significantly harder to treat than early-stage tendinopathy. The earlier you address it, the better the outcome.
How to Keep Training with Patellar Tendinopathy
The goal is to keep the tendon loaded at a level it can handle while reducing the activities that are most provocative - and to build load tolerance progressively over time.
Modify rather than stop
If heavy squats are aggravating, replace them temporarily with leg press - same muscle groups, less tendon stress. If running is painful, substitute cycling or swimming. The aim is to maintain fitness and muscle mass while giving the tendon the relative rest it needs.
Monitor with the Victorian Institute of Sport Assessment scale
Rate your tendon pain on a scale of 0-10 before, during and after training. Keeping pain below 3 out of 10 during training and ensuring it returns to baseline within 24 hours of a session is a widely used and practical guideline for training through tendinopathy safely.
Use a patella strap during training
A well-fitted patella strap reduces the peak load on the tendon during activity by applying compression just below the kneecap. This allows many athletes to train at higher intensity than they could manage unstrapped - which is important for maintaining load tolerance and preventing the deconditioning that makes tendinopathy worse.
The Mammal Knee Patella Support Straps are designed specifically for this purpose - targeted patellar tendon compression through an adjustable strap and focused compression pad. Lightweight, low-profile and built for regular training use across running, strength work and functional fitness.
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Be patient
Tendon tissue remodels slowly. Meaningful improvement in patellar tendinopathy typically takes 6-12 weeks of consistent, well-managed loading. Progress is rarely linear - there will be flare-ups. The key is not to panic when they happen and not to drastically change what you are doing based on a single bad day.
When to See a Professional
See a physiotherapist if:
- Pain is severe, getting progressively worse or not responding to load management after 4-6 weeks
- The knee is swollen or hot
- Pain came on after a specific incident rather than gradually over time
- You are unsure whether it is the patellar tendon or something else causing the pain
- You have a competition or event coming up and need to manage the condition under time pressure
A good physiotherapist will confirm the diagnosis, assess the contributing factors specific to you and build a rehabilitation plan around your training goals rather than just telling you to rest.
The Right Support Makes a Real Difference
Managing patellar tendinopathy does not mean stopping training. It means training smarter - with the right load management, the right exercises and the right support for the tendon during activity.
A patella strap is one of the most practical and accessible tools for keeping athletes training through a tendinopathy flare. The Mammal Knee Patella Support Straps provide targeted compression to the patellar tendon through an adjustable, low-profile design built for daily training use.
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