Patellar Tendonitis Exercises: A Gentle Loading Plan

The best patellar tendonitis exercises load the tendon gradually instead of resting it completely. Start with isometric holds like wall sits or a held leg extension to calm pain, then progress to slow, heavier squats and leg presses, and only later add jumping. Most people need about 12 weeks of steady work.

Patellar tendonitis, often called jumper’s knee or patellar tendinopathy, is pain in the tendon just below the kneecap. It usually builds up over time from repeated jumping, running or squatting, and it tends to respond best to patient, progressive loading.

What Patellar Tendonitis Usually Feels Like

Pain from the patellar tendon is usually very local. You can often point to one spot just below the kneecap. It tends to hurt when you start an activity, may ease once you’re warm, then comes back worse afterward or the next morning.

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Jumping, landing, going downstairs, squatting and sitting for long stretches with bent knees are common triggers. Many people notice it after a jump in training volume, like adding a jump class, more stairs, or a new running block.

Although tendonitis is the common name, research suggests that long-standing tendon pain usually isn’t mainly about inflammation. The tendon has been asked to handle more than it currently can, so the goal is to gradually build its capacity again.

Why Loading Works Better than Rest

Tendons respond to the forces placed on them. When you rest a sore tendon completely, it gets less able to cope with load, and the pain often returns as soon as you go back to activity.

Progressive loading does the opposite. Over weeks, controlled exercise helps the tendon tolerate more force. As a NASM corrective exercise and performance enhancement specialist, I think of it as rebuilding a foundation before putting the roof back on.

The Tendon Pain Rule

Tendon exercise is allowed to be a little uncomfortable. The key is how the tendon responds over the next 24 hours.

1. During exercise: Pain up to about 3 out of 10 is usually acceptable.
2. The next morning: Test with a simple single-leg squat or a few steps on the stairs. It should feel no worse than the day before.
3. If it’s worse: Drop the load, reps or depth at your next session rather than stopping altogether.
4. If it’s steady or better: Hold that level for a few sessions, then progress slightly.

Stage 1: Patellar Tendonitis Isometric Exercises

Isometric exercises mean holding a position without moving. They’re a common starting point because they often reduce tendon pain for a while afterward. Do them daily, or even twice a day, during a flare.

1. Wall Sit Holds (5 Holds of 30 to 45 Seconds)

Lean against a wall and slide down to a depth that feels like a strong effort but stays in your pain rule. Rest about two minutes between holds.

Wall sits are the easiest of the patellar tendonitis exercises at home because they need nothing but a wall. Push your weight through your heels and keep your knees over your toes.

2. Spanish Squat Holds (5 Holds of 30 to 45 Seconds)

Loop a strong band around a sturdy post at knee height, step inside it so it sits behind both knees, then sit back with your shins upright. The band takes the strain so your quads work hard.

This position loads the patellar tendon with very little stress on the kneecap joint. Hold steady and breathe normally the whole time.

3. Seated Leg Extension Hold (5 Holds of 30 to 45 Seconds Each Side)

Sit on a chair with an ankle weight or band around one ankle. Straighten the knee about two thirds of the way and hold it there.

If you train at a gym, a leg extension machine works well for this with a moderate weight. Keep the hold strong but within your pain rule.

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Stage 2: Slow, Heavy Strength Work

Once isometrics feel comfortable and the tendon is calmer, you add slow movement. This stage builds most of the strength, so give it several weeks. Train three times a week with a rest day in between.

4. Slow Tempo Squats (3 Sets of 8)

Lower for 3 seconds and rise for 3 seconds. Start with bodyweight or a light weight at a depth that feels okay, then add load slowly week by week.

The slow tempo keeps the tendon under steady tension without sudden jolts. My guide to knee pain when squatting explains how to adjust depth.

5. Leg Press or Split Squats (3 Sets of 8 Each Side)

Use a leg press at the gym, or do split squats at home with a slow 3-second lower and 3-second rise. Go only as deep as the tendon tolerates.

Single-leg work helps if one side is sorer than the other. My Bulgarian split squat guide shows a harder progression for later.

6. Decline Squats (3 Sets of 10 to 15)

Stand on a slant board or a firm wedge with your heels raised. Squat down slowly on both legs, then progress to lowering on one leg and rising on two.

These are the classic eccentric exercises for patellar tendonitis. The slope puts more load on the tendon, so introduce them once the earlier moves feel easy.

Stage 3 and 4: Spring Work and Return to Sport

Once you can squat and press with slow, heavy loads without next-day flares, you can reintroduce springier movements. Many people reach this point somewhere around weeks 6 to 9.

7. Fast Step-Ups (3 Sets of 10 Each Side)

Step up onto a low step briskly, then step down with control. This is a gentle bridge between slow strength work and jumping.

8. Low Pogo Hops (3 Sets of 10 to 20)

Stand tall and make small, quick hops on the balls of your feet, staying light. Start with both feet, and only move to single-leg hops when that feels easy.

These jumper’s knee exercises rebuild the tendon’s spring. Add them on alternate days at first, and return gradually to running, jumping or sport after that.

The Stages at a Glance

Use this table as a rough guide. Move forward based on how your tendon responds, not the calendar.

Patellar Tendonitis Exercises to Avoid for Now

Very little is off limits forever. These moves tend to aggravate a sensitive patellar tendon in the early stages.

1. Jumping and plyometrics. Box jumps, jump squats and skipping put fast, heavy loads through the tendon. Save them for the final stage.
2. Deep squats under heavy load. Keep depth moderate until the tendon handles slow work comfortably.
3. Lots of downhill running or stairs. Both load the tendon hard. Reduce them for now.
4. Stretching the tendon hard. Aggressive quad stretching usually doesn’t help a tendon and can irritate it.
5. Frequent big swings in training. Keep your weekly load steady rather than doing nothing for days then a lot at once.

Quick Questions

When to See a Doctor

Pain below the kneecap can come from several sources, so it’s worth getting it properly diagnosed by a doctor or physical therapist before you start a long plan.

Seek care right away if you felt a sudden pop, can’t straighten your leg, notice rapid swelling, or have locking, catching or the knee giving way. The same goes for pain after a fall or twist, a hot or red knee, fever, pain at night, numbness, or being unable to put weight on the leg.

Your This-Week Plan

1. Day 1: Do 5 wall sit holds and note your pain level during and the next morning.
2. Day 2: Repeat the isometric holds and take a flat 15 to 20 minute walk.
3. Day 3: Do 5 Spanish squat or leg extension holds. Check the morning test again.
4. Day 4: Rest from holds or do a short, easy set if your tendon feels better after them.
5. Day 5: Repeat the holds and add 2 sets of slow tempo squats if your morning test is calm.
6. Days 6 and 7: One more isometric session, a walk, and plan next week’s slow strength days.

This guide is part of my knee pain and knee-friendly workouts guide. If your pain is more around or behind the kneecap than below it, my guide to runner’s knee exercises may be a better fit.

The Bottom Line

Patellar tendonitis exercises work best as a steady progression. Start with isometric holds to calm the tendon, move to slow, heavier loading, and bring back jumping last.

Follow the 24-hour pain rule and be patient. Tendons change slowly, but most people who stick with progressive loading for about three months get back to the activities they love.

This article is for general education and isn’t medical advice. Pain below the kneecap can have several causes, so get a diagnosis from your doctor or a physical therapist, especially if you felt a pop, can’t straighten your leg, or have swelling, locking, giving way, redness, fever or night pain, and stop any move that causes sharp pain.