Why Does My Knee Hurt When I Jump? Causes and Solutions

Jumping sports—basketball, volleyball, track and field—place tremendous demands on the knees. When jumping causes pain, it can sideline athletes and affect anyone who needs explosive lower body movement.

Common Causes of Knee Pain When Jumping

Patellar Tendinitis (Jumper's Knee)

The most common cause—inflammation of the tendon connecting your kneecap to your shinbone.

What it feels like:

• Pain just below the kneecap
• Worse with jumping and landing
• Tender when pressing the tendon
• Stiff in the morning, loosens up, then hurts with activity

What causes it:

• Repetitive jumping and landing
• Sudden increase in training
• Tight quadriceps
• Weak quadriceps (especially eccentric)

Patellofemoral Pain Syndrome

Irritation under the kneecap from the high forces of jumping and landing.

What it feels like:

• Pain around or behind kneecap
• Worse with deep knee bending
• Also hurts with stairs
• May feel grinding

What causes it:

• High impact forces
• Weak quadriceps
• Poor landing mechanics
• Tight surrounding muscles

Osgood-Schlatter Disease (in young athletes)

Growth plate irritation common in adolescent jumpers.

What it feels like:

• Pain and bump below kneecap
• Tender to touch
• Worse with activity
• Common in growing athletes

What causes it:

• Growth spurts
• Repetitive stress on growth plate
• High activity levels
• Tight quadriceps

Meniscus Issues

The cartilage pads can be stressed by landing forces.

What it feels like:

• Pain along joint line
• Catching or locking
• Swelling after activity
• Worse with twisting movements

What causes it:

• High impact landing
• Twisting on landing
• Existing wear
• Previous injury

Poor Landing Mechanics

How you land determines how much stress your knee absorbs.

Problematic mechanics:

• Landing with straight knees
• Knees caving inward
• Landing on one leg when not intended
• Hard, loud landings

How to Fix Knee Pain from Jumping

1. Strengthen with Eccentric Exercises

Eccentric training is the gold standard for jumper's knee.

Key exercises:

• Decline eccentric squats: Stand on decline board, lower slowly over 3-4 seconds, use other leg to return. 3 sets of 15, twice daily for tendinitis.
• Single-leg eccentric leg press: Lower slowly, push up with both legs. 3 sets of 12 each leg.
• Step-down eccentrics: Stand on step, lower slowly. 3 sets of 12 each leg.

2. Build Overall Quad Strength

Strong quadriceps handle jumping demands better.

Key exercises:

• Squats: Full depth if pain-free. 3 sets of 12-15.
• Bulgarian split squats: Rear foot elevated. 3 sets of 10 each leg.
• Leg press: Controlled through full range. 3 sets of 12.
• Wall sits: Isometric strengthening. 3 sets of 45-60 seconds.

3. Strengthen Hips and Glutes

Hip stability prevents knee collapse during landing.

Key exercises:

• Single-leg bridges: Build glute strength. 3 sets of 12 each side.
• Clamshells: Hip external rotator strength. 3 sets of 15 each side.
• Single-leg squats: Control through range. 3 sets of 8-10 each leg.
• Lateral band walks: Hip abductor strength. 3 sets of 20 each direction.

4. Improve Landing Mechanics

Land soft and controlled to reduce knee stress.

Key principles:

• Land on balls of feet, roll to heels
• Bend knees and hips to absorb force
• Keep knees tracking over toes (no caving)
• Land quietly—noise means impact
• Use arms for balance and deceleration

Landing drills:

• Box drops with soft landing
• Two-foot landings progressing to single-leg
• Land and stick (hold position)
• Progress from low to higher heights

5. Stretch Tight Muscles

Flexibility reduces tendon strain.

Key stretches:

• Quad stretch: Pull foot to glutes. Hold 30 seconds each side.
• Hip flexor stretch: Half-kneeling position. Hold 30 seconds each side.
• Calf stretch: Wall stretch. Hold 30 seconds each side.
• Hamstring stretch: Reach toward toes. Hold 30 seconds each side.

6. Progress Jumping Gradually

Build back to full jumping systematically.

Progression:

1. Pain-free squatting
2. Mini hops in place
3. Bilateral jumps, soft landing
4. Single-leg hops
5. Sport-specific jumping
6. Full return to play

7. Manage Training Load

Avoid the overuse that causes most jumping knee pain.

Strategies:

• Limit jumping repetitions
• Include rest days
• Cross-train with low-impact activities
• Periodize training (not max effort all the time)
• Track jumping volume

8. Consider Patellar Straps

Straps can reduce tendon stress during activity.

Guidelines:

• Position just below kneecap
• Should be snug but not tight
• Use during activity, not at rest
• Not a substitute for strengthening

When to See a Doctor

Seek professional evaluation if:

• Pain is severe or worsening
• Knee swells significantly
• You can't jump at all
• Pain persists despite 4-6 weeks of treatment
• Knee gives way or locks
• Pain affects walking

Prevention Strategies

Build habits:

1. Maintain quad and hip strength year-round
2. Practice proper landing mechanics
3. Progress training gradually
4. Stretch after activity
5. Monitor and limit jumping volume
6. Address pain early

The Bottom Line

Knee pain from jumping usually stems from patellar tendinitis, patellofemoral issues, or poor landing mechanics. The fix combines eccentric strengthening (especially for tendinitis), building overall leg strength, improving landing technique, and managing training load.

Start with eccentric exercises—they're specifically effective for jumper's knee. Add landing mechanics work for injury prevention. Most jumping-related knee pain improves within 6-12 weeks of consistent treatment, though tendon issues can take longer.

If pain is severe or not responding to these strategies, see a sports medicine provider for proper evaluation.