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Rehabilitation2026-03-09•6 min read

Jumper's Knee Exercises: Patellar Tendinopathy Treatment

What Is Jumper's Knee?

Jumper's knee (patellar tendinopathy) is pain at the patellar tendon — the tendon connecting your kneecap to your shinbone.

Symptoms:

  • Pain at bottom of kneecap
  • Worse with jumping, landing, stairs
  • Stiffness after rest
  • Pain with deep squatting
  • May feel better once warmed up

    • Who gets it: Athletes in jumping sports (volleyball, basketball, track and field), but also runners and recreational athletes.

    Why It Happens

    The Mechanism

    Repetitive loading exceeds tendon's capacity to recover. The tendon breaks down faster than it can repair.

    Risk Factors

  • Sudden increase in training
  • High volume of jumping/running
  • Inadequate recovery
  • Training on hard surfaces
  • Poor landing mechanics
  • Weak quadriceps

    • The Evidence-Based Treatment

    Heavy slow resistance (HSR) and eccentric exercises are the proven treatments for patellar tendinopathy.

    Phase 1: Isometric Loading (Week 1-2)

    Isometric Leg Extension

  • Leg extension machine or band
  • Hold at 60° knee flexion
  • 45 seconds x 5 sets
  • Reduces pain acutely

    • Spanish Squat Isometric

  • Band around knees, anchored behind
  • Squat to 60-70°, hold
  • 45 seconds x 5 sets

    • Why isometrics:

  • Reduce pain
  • Maintain strength
  • Load tendon safely

    • Phase 2: Heavy Slow Resistance (Week 2-8)

    Squat (Slow Tempo)

  • 3 seconds down, 3 seconds up
  • Progress weight gradually
  • 4 x 8-12 reps
  • 3x weekly

    • Leg Press (Slow Tempo)

  • Same tempo
  • Full available range
  • 4 x 8-12 reps

    • Single Leg Squat (Progress to)

  • When double leg is easy
  • Same slow tempo
  • 3 x 8 each leg

    • Phase 3: Eccentric Decline Squats (Alternative/Addition)

    Decline Squat (Single Leg)

  • Stand on decline board (25°)
  • Lower on injured leg (3 seconds)
  • Return with both legs or good leg
  • 3 x 15, twice daily
  • Classic protocol for patellar tendinopathy

    • Phase 4: Return to Sport (Week 8+)

    Plyometric Progression:

    1. Double leg jumping in place

    2. Single leg hopping in place

    3. Box jumps (small)

    4. Drop landings

    5. Sport-specific drills

    Progress when:

  • Pain-free during exercise
  • No increase in pain for 24 hours after
  • Strength restored

    • Loading Program Details

    Frequency

  • Heavy slow resistance: 3x weekly
  • Decline eccentrics (if used): Daily

    • Pain Rule

    0-3/10 pain during exercise: Acceptable

    4-5/10: Reduce load

    6+/10: Stop, modify approach

    Pain should not increase 24 hours after exercise.

    Progression

  • Add weight when current load feels moderate
  • Progress 5-10% per week
  • Maintain good form

    • Sample Weekly Program

    Week 1-2

    Daily:

  • Isometric leg extension: 45 sec x 5
  • Ice after if needed

    • 3x Weekly:

  • Isometric Spanish squats: 45 sec x 4

    • Week 3-8

    3x Weekly:

    1. Squat (slow): 4 x 10

    2. Leg press (slow): 4 x 10

    3. Single leg squat (when ready): 3 x 8 each

    4. Calf raises: 3 x 15

    Daily (Optional):

  • Decline eccentrics: 3 x 15

    • Week 8+

  • Continue strengthening 2x weekly
  • Add plyometrics progressively
  • Gradual return to sport

    • Important Considerations

    Don't Rest Completely

    Tendons need load to heal. Complete rest makes them weaker.

    Don't Stretch Aggressively

    Compresses the tendon at kneecap. Avoid deep quad stretching.

    Modify, Don't Stop

    Reduce jumping/running but maintain strength training.

    Be Patient

    Tendons heal slowly. Expect 3-6 months for full recovery.

    Common Mistakes

    1. Too Much Rest

    Problem: Tendon weakens

    Fix: Maintain appropriate loading

    2. Returning Too Soon

    Problem: Re-injury

    Fix: Complete full rehab progression

    3. Only Doing Eccentrics

    Problem: Missing full strength benefits

    Fix: Heavy slow resistance is equally effective

    4. Ignoring Pain Responses

    Problem: Overloading

    Fix: Follow pain rules strictly

    Prevention

  • Gradual training progression
  • Adequate recovery between sessions
  • Strength training for quads and hips
  • Proper landing mechanics
  • Appropriate training surfaces

    • When to Seek Help

  • No improvement after 6-8 weeks
  • Severe pain limiting daily activities
  • Complete inability to jump/run
  • Swelling or warmth at tendon

    • The Bottom Line

    Jumper's knee requires:

    1. Heavy loading — Not rest

    2. Slow controlled movement — HSR protocol

    3. Progressive return — Plyometrics last

    4. Patience — 3-6 months

    5. Maintenance — Ongoing strength work

    The evidence is clear: load the tendon appropriately, and it heals.

    Foundational Rehab provides patellar tendinopathy rehabilitation programs.

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