Patellar Tendon Repair Exercises: Recovery After Patellar Tendon Surgery

A patellar tendon rupture is a serious knee injury that destroys your ability to straighten your knee against resistance. The tendon connects the kneecap (patella) to the shinbone (tibia) and is essential for walking, climbing stairs, and all activities requiring knee extension. Surgical repair is almost always necessary, and rehabilitation is lengthy but crucial for full recovery.

Understanding Patellar Tendon Rupture

The Injury

The patellar tendon is part of the "extensor mechanism" that straightens the knee:

• Quadriceps muscle → Quadriceps tendon → Patella → Patellar tendon → Tibia

Rupture typically occurs:

• During forceful contraction against resistance
• Landing from a jump
• Direct trauma
• More common with prior tendinitis or steroid injections

Signs of Rupture

• Inability to straighten knee or perform straight leg raise
• Gap felt below kneecap
• Kneecap sits higher than normal
• Significant swelling

Surgical Repair

Surgery involves:

• Reattaching tendon to bone
• Often reinforced with wire, suture, or additional tissue
• May include patella protection wire or cable

Recovery Timeline

• Week 0-6: Protected ROM, locked brace
• Week 6-12: Progressive ROM and weight-bearing
• Week 12-20: Strengthening progression
• Month 5-9: Advanced strengthening, return to activity

Recovery is slow—the tendon must heal to bone.

Phase 1: Protection Phase (Week 0-6)

Brace Management

• Knee locked in extension for walking
• Brace worn at all times except exercises
• Some protocols allow limited flexion during exercises
• Follow surgeon's specific restrictions

Goals

• Protect surgical repair
• Maintain quadriceps activation
• Prevent complications
• Begin safe ROM (if allowed)

Quad Sets (Critical)

Maintain quad activation from day 1:

1. Sit or lie with leg straight
2. Push back of knee down
3. Tighten quadriceps
4. Hold 5-10 seconds
5. Relax completely

Perform: 20-30 reps, every 1-2 hours

Straight Leg Raises

In locked brace:

1. Lock brace in full extension
2. Lie on back
3. Lift entire leg 6-12 inches
4. Hold 3-5 seconds
5. Lower slowly

Perform: 10-15 reps, 4-5 times daily

Ankle Pumps

Prevent blood clots:

1. Pump ankles up and down
2. Circle ankles
3. Do frequently

Perform: 20-30 reps, every hour

Passive ROM (If Allowed)

Some protocols allow early passive flexion:

1. Sit on bed edge or use CPM machine
2. Allow gravity or machine to bend knee
3. Stay within allowed range (often 30-60 degrees initially)
4. No active flexion against resistance

Follow your specific protocol—some have no early flexion.

Upper Body and Core

Maintain fitness:

• Upper body exercises
• Core work without knee stress
• Non-affected leg exercises

Phase 2: Early ROM (Week 6-12)

Goals

• Progressive knee flexion
• Begin weight-bearing
• Progress quad strengthening
• Maintain patellar mobility

ROM Progression

Typical Progression (varies by surgeon):

• Week 6: 0-60 degrees
• Week 8: 0-90 degrees
• Week 10: 0-110 degrees
• Week 12: Full ROM

Passive and Active-Assisted Flexion

Heel Slides:

1. Lie on back
2. Slide heel toward buttocks
3. Go to limit allowed
4. Slide back

Sitting Flexion:

1. Sit on bed edge
2. Let gravity bend knee
3. Use other leg to assist if needed

Perform: 15-20 reps, 4-5 times daily

Weight-Bearing Progression

Typical Progression:

• Week 6: Partial weight-bearing in locked brace
• Week 8: Progress weight-bearing
• Week 10: Full weight-bearing in brace
• Week 12: Wean from brace

Patellar Mobilization

Keep patella mobile:

1. Gently push patella up, down, side to side
2. Don't force—gentle pressure
3. Helps prevent scar adhesions

Perform: 2-3 minutes, 2-3 times daily

Quad Strengthening (Protected)

Short Arc Quads (When Allowed):

1. Towel roll under knee
2. Straighten knee from this position
3. Squeeze quad at top
4. Lower slowly

Perform: 15-20 reps, 3-4 sets

Stationary Bike

When ROM allows:

1. High seat initially
2. Rock back and forth first
3. Progress to full rotation
4. No resistance

Perform: 10-20 minutes

Phase 3: Strengthening (Week 12-24)

Goals

• Full ROM
• Progressive quad strengthening
• Normalize gait
• Build knee stability

Full Active ROM

Active Knee Extension:

1. Sit on chair edge
2. Straighten knee fully
3. Hold 3-5 seconds
4. Lower slowly

Active Flexion:

1. Standing, bend knee
2. Bring heel toward buttocks
3. Lower slowly

Perform: 15-20 reps, 3-4 times daily

Terminal Knee Extensions

Critical exercise:

1. Loop band behind knee
2. Face anchor
3. Straighten knee against resistance
4. Control return

Perform: 15-20 reps, 3-4 sets

Leg Press

1. Start with light resistance
2. Full ROM when comfortable
3. Progress weight gradually
4. Both legs initially, then single-leg

Perform: 12-15 reps, 3 sets

Squats (Progression)

Mini Squats:

1. Hold support
2. Squat to 30-45 degrees
3. Progress depth gradually

Wall Sits:

1. Back against wall
2. Slide to comfortable position
3. Hold 30-60 seconds

Perform: Progress reps, depth, and duration

Step-Ups

1. Start with 4-inch step
2. Step up leading with surgical leg
3. Control descent
4. Progress step height

Perform: 12-15 reps, 3 sets

Hamstring Strengthening

Balance quad work:

• Hamstring curls
• Romanian deadlifts
• Bridges

Perform: 12-15 reps, 3 sets

Balance Training

Single-Leg Stance:

1. Stand on surgical leg
2. Hold 30-60 seconds
3. Progress challenges

Perform: 3-5 reps, 30-60 seconds

Phase 4: Advanced Strengthening (Week 24+)

Goals

• Full strength restoration
• Sport-specific preparation
• Plyometric training
• Return to activity

Single-Leg Exercises

Single-Leg Press:

1. Full ROM
2. Compare to other side
3. Progress resistance

Single-Leg Squat:

1. Partial depth initially
2. Focus on control
3. Progress depth

Step-Downs (Eccentric):

1. Stand on step
2. Lower opposite foot slowly
3. Tap and return

Perform: 10-12 reps each, 3 sets

Eccentric Training

Decline Squats:

1. Stand on decline board
2. Slow, controlled squat
3. 3-second descent

Eccentric Leg Press:

1. Lift with both legs
2. Lower with surgical leg
3. Slow, controlled

Perform: 12-15 reps, 3 sets

Plyometrics (When Cleared)

Double-Leg Jumps:

1. Small hops in place
2. Progress to forward jumps
3. Land softly

Box Jumps:

1. Low box
2. Jump up, step down
3. Progress height

Single-Leg Hops (Later):

1. When strength adequate
2. Start small
3. Progress distance

Perform: 10-15 reps, 2-3 sets

Running Progression

Prerequisites:

• Full ROM
• Strength 80%+ of other side
• No pain with jumping
• Surgeon clearance (often 6+ months)

Progression: Week 1: Walk-jog intervals Week 2: Progress jog duration Week 3: Continuous jogging Week 4: Add speed variations Week 5+: Sport-specific running

Sample Schedule (Week 16)

Daily

• ROM exercises: 3-4 times
• Patellar mobilization: 2-3 times

Monday/Wednesday/Friday

• Terminal knee extensions: 3x15
• Leg press: 3x12
• Squats: 3x15
• Step-ups: 3x12
• Hamstring curls: 3x12
• Single-leg balance: 3x45 sec

Tuesday/Thursday

• Stationary bike: 25-30 min
• Step-downs: 3x10
• Hip strengthening
• Stretching

Precautions

Early Restrictions

• No active knee flexion against resistance early
• No deep squats for months
• No jumping until cleared
• Avoid falls

Long-Term Considerations

• May have permanent quadriceps weakness
• Full strength takes 9-12 months
• Return to sport 6-9+ months
• Some activities may be modified permanently

Warning Signs

Contact surgeon if:

• Sudden loss of extension
• New pop or tear sensation
• Gap felt at tendon
• Significant increase in pain
• Unable to straighten knee

Key Takeaways

Patellar tendon repair recovery is a long journey:

1. Protect the repair - Healing to bone takes months
2. Quad activation is critical - Start immediately
3. ROM progresses slowly - Follow protocol strictly
4. Strength takes time - 9-12 months for full recovery
5. Patience is essential - Rushing causes failure

Patellar tendon repairs can achieve good outcomes, but the rehabilitation is demanding. Full commitment to the exercise program is necessary for the best possible recovery.