Patellar Tendinopathy: The Jumper's Knee That Affects Runners Too

What is patellar tendinopathy?

The patellar tendon connects the kneecap (patella) to the shin bone (tibia). Every time you push off the ground, climb stairs, or squat, this tendon is under load. In runners, it takes a beating with every stride.

When the cumulative load exceeds what the tendon can handle, it starts to break down. The result is a localised, often very precise point of pain just below the kneecap.

It's sometimes called jumper's knee because of its prevalence in basketball and volleyball, but runners - especially those doing hill work, speed sessions, or high weekly volume - get it too.

How to recognise it

• Pain precisely at the lower pole of the kneecap
• Pain that warms up during exercise but returns afterwards
• Stiffness after sitting for a long time
• Worse going downstairs than upstairs
• Tender to touch at the tendon insertion

What drives it

• Volume spikes - the most consistent trigger
• Downhill running - increases eccentric quad load significantly
• Hard surfaces - reduces shock absorption
• Weak quads - the tendon absorbs more load when the muscle above it can't
• Tight quads and hip flexors - increases tension on the tendon at rest

What works

1. Isometric wall sit

Back against the wall, thighs parallel to the floor. Hold 30–45 seconds. Repeat 4 times. Reduces tendon pain quickly through sustained muscle contraction.

2. Spanish squat (with band)

Band around a post, sit back into a squat while the band pulls your knees forward. This puts load specifically on the patellar tendon. 4 sets of 8 reps, slow.

3. Leg press (slow eccentric)

Load the leg press, push up with both legs, lower slowly on the affected leg over 3–4 seconds. 4 sets of 8. Progressive loading that drives tendon adaptation.

4. Single-leg decline squat

On a 25-degree decline board (or wedge), squat slowly on one leg. This isolates the patellar tendon more than any other exercise. 3 sets of 15. The gold standard exercise for this injury.

5. Hip strengthening

Weak hips change running mechanics in ways that increase patellar tendon load. Clamshells, lateral band walks, and single-leg bridges are worth adding.

Running modifications

Reduce volume by 30–50% during the rehab phase. Avoid downhills entirely until the tendon is strong. Shorter strides and higher cadence reduce the eccentric demand on the quad and tendon.

Timeline

8–12 weeks for mild to moderate cases with daily loading. More severe or longstanding cases can take 4–6 months. The tendon needs consistent progressive loading to remodel - not rest.

The key principle

Tendons don't like rest, and they don't like sudden high load. They like consistent, progressive loading with adequate recovery between sessions. That principle, applied consistently, is what gets patellar tendons better.