Patellar Tendonitis (Jumper's Knee)
Patellar Tendon · Masters Runners

Patellar Tendonitis (Jumper's Knee) in Masters Runners

A focused guide to patellar tendon for masters runners (40+) — what causes it, the early warning signs, what to do today, and how to prevent it from coming back.

Why masters runners (40+) Get Patellar Tendon

Repeated high-load knee extension from jumping, sprinting, or sudden hill work overloads the patellar tendon.

In masters runners (40+) specifically, the risk is amplified by lifetime-load training with longer recovery requirements. Specific to 40+ runners whose recovery and tissue tolerance shift with age.

Early Warning Signs

These are the signs to act on — before the injury becomes a multi-week problem.

  • Soreness below the kneecap after sessions
  • Morning stiffness in the front of the knee
  • Discomfort going down stairs

When to Stop and Get Checked

These signs mean you're past self-care territory — see a sports medicine provider.

  • Pain during every jump or sprint
  • Pain at rest
  • Visible thickening of the tendon

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What to Do This Week

If you caught it early, here's the self-care protocol most masters runners (40+) respond to.

  • Cut jumping, sprinting, and hill work
  • Heavy slow squats (focus on eccentric)
  • Spanish squats (isometric loading)
  • Manage training spikes

Prevention: Stop the Cycle

Patellar Tendon is rarely a one-time event — it returns when the underlying causes aren't addressed. Build these into your weekly routine.

  • Quad strength 2-3x/week year-round
  • Progress jumping and sprint volume gradually
  • Address calf mobility
  • Strength through full range

The Bottom Line for Masters Runners

Patellar Tendon in masters runners (40+) is preventable, treatable, and survivable — if caught early. The mistake most runners make is normalizing the early signs and pushing through. Don't. The cost of one week off now is far less than four weeks off later.

Catch it earlier next time

Stridely flags injury risk before it becomes injury.

Daily monitoring of training load, sleep, and recovery — so masters runners (40+) can train hard without breaking down.

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