What is patellar tendinopathy?
Patellar tendinopathy - sometimes called jumper's knee - is degeneration and pain in the patellar tendon, the structure that connects the kneecap (patella) to the shin bone (tibia). The patellar tendon transmits the force of the quadriceps muscle group into knee extension, making it central to running, jumping, landing, squatting, and any sport involving explosive leg power.
When the patellar tendon is repeatedly loaded beyond its capacity to recover, the tendon structure begins to degenerate at a cellular level: tendon cells die off, the collagen matrix becomes disorganised, and small areas of the tendon develop a poor blood supply that impairs healing. The result is a tendon that is weaker, less elastic, and chronically painful under load.
Unlike a simple tendon inflammation, tendinopathy does not respond well to rest alone. The tendon needs progressive mechanical loading to stimulate the collagen remodelling that restores its structure. Complete rest actually makes the tendon worse over time.
Understanding patellar tendinopathy
Causes and contributing factors
- High-volume jumping, sprinting, or squatting that repeatedly exceeds the tendon's recovery capacity
- A sudden spike in training load - the most common trigger for tendinopathy onset
- Sport surfaces that are hard and inflexible (indoor courts, astroturf, gym floors), amplifying tendon load on every contact
- Weak quadriceps or glutes transferring excessive stress to the patellar tendon during lower limb loading
- Tight hip flexors altering anterior pelvic tilt and increasing patellar tendon strain during deep knee flexion
- Returning to high-load sport too quickly after injury or a training break
Symptoms to recognise
- Pain directly at the bottom of the kneecap (inferior pole of the patella), which is precisely located and tender to press
- Pain that is present at the start of activity, often eases during warm-up, then returns after exercise - the characteristic "warm-up and return" pattern
- Pain with loading in deep knee flexion: squatting, lunging, going downstairs, sitting for long periods
- Stiffness after rest, particularly the morning after a hard training session
- Gradual onset over weeks or months, rather than a single acute injury event
How Bearhug helps
The Bearhug knee support provides graduated compression to the patellar tendon and the soft tissue around the inferior pole of the patella. This compression reduces the mechanical stress on the tendon during loading by distributing force more evenly across the structure, and provides warmth that improves circulation and reduces the stiffness that drives the characteristic early-session pain pattern.
Wearing the knee support during activity allows continued training at a managed load while the underlying tendon rehabilitation takes place. Between sessions, compression maintains circulation to the relatively poorly vascularised tendon tissue and reduces inflammatory reactivity. For athletes who cannot fully reduce their training volume, consistent compression is an important tool for keeping the tendon as calm as possible between sessions.
The most evidence-supported treatment for patellar tendinopathy is a progressive tendon loading programme: isometric holds initially (e.g. wall sits and Spanish squats), progressing to heavy slow resistance work (slow leg press and slow decline squats), and eventually to reactive loading. This remodels the disorganised tendon collagen and restores structural integrity over a 3-6 month programme.
The information on this page is provided for general guidance only and does not constitute medical advice. If you are experiencing pain or injury, please consult a qualified healthcare professional for a proper diagnosis and treatment plan. Bearhug products are Class 1 medical devices designed to support - not replace - medical treatment.