Why high school runners Get Patellar Tendon
Repeated high-load knee extension from jumping, sprinting, or sudden hill work overloads the patellar tendon.
In high school runners specifically, the risk is amplified by rapid training progressions, multi-sport schedules, growing tissues. Specific to 14-18 year-old athletes whose bones and tendons are still maturing.
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 high school runners 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 High School Athletes
Patellar Tendon in high school runners 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.
Stridely flags injury risk before it becomes injury.
Daily monitoring of training load, sleep, and recovery — so high school runners can train hard without breaking down.
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