Jumper's Knee (Patellar Tendinopathy): Symptoms & Treatment
The stubborn tendon pain below the kneecap — and why rest doesn't fix it
Updated July 20262 minute read
Jumper's knee is an overload injury of the patellar tendon, felt as a pinpoint ache just below the kneecap that warms up during activity and complains afterward. Rest alone rarely fixes it — the evidence-based treatment is progressive tendon loading, which typically takes 8–16 weeks of consistent work.
What is jumper's knee?
The patellar tendon connects your kneecap to your shin and transmits every jump, sprint, and squat. When training load rises faster than the tendon can adapt — more volume, more intensity, less recovery — the tendon's structure gets behind and starts signaling. That's tendinopathy: not inflammation to be iced away, but a capacity problem to be trained away.
It's most common in jumping athletes (volleyball, basketball) and lifters, but anyone who spiked their training can develop it.
Symptoms
- Pinpoint pain just below the kneecap — you can usually press one finger on the exact spot
- Hurts at the start of activity, eases as you warm up, aches after
- Morning stiffness in the tendon after hard days
- Deep squats, jumping, and downhill walking are the usual provokers
Why rest doesn't work
Tendons respond to load the way muscle does: capacity grows when loaded progressively and shrinks when unloaded. Full rest calms symptoms while quietly lowering the tendon's capacity — so the pain returns the week you do. The research consensus is the opposite approach: keep the tendon working at a tolerable level and build up from there.
What treatment actually looks like
A PT's plan for jumper's knee typically runs in stages over 2–4 months:
- Calm it down — trim the load spikes (jump volume, plyometrics), not the sport; isometric holds that reduce pain while maintaining load.
- Build capacity — heavy, slow strength work for the quads and the tendon: think slow squats and leg press, progressed by weight, not by pain bravado.
- Restore spring — gradual reintroduction of faster, springier loading: jumps, landings, sprint work.
- Return and future-proof — back to full sport with a load-management plan so next season's ramp-up doesn't repeat the injury.
The next-day rule keeps everything honest: pain up to mild-moderate during work is acceptable if it settles by the next morning.
When to see someone
If tendon pain has lingered past a couple of weeks of sensible load trimming — or it's altering how you jump, squat, or train — an evaluation will save you months of the rest-flare-rest cycle. A PT can also rule out the look-alikes (fat pad irritation, runner's knee, growth-plate issues in teens). Unsure where your pain fits? Start with knee pain on stairs and squats or when to see a PT for knee pain.
Frequently asked questions
Sources (1)
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.