Specialista in Ortopedia Pediatrica
Anterior knee pain / patellofemoral syndrome
Home Exercise Program
Not every exercise listed here is suitable for every child: the selection is individual and is defined during the consultation.
1.Gluteus medius strengthening (clamshell and side-steps)
Gluteus medius controls the knee - strengthening it reduces patellar pain
CLAMSHELL: Lying on side, knees bent 90°, feet together. Open knees like a clamshell keeping feet together. Movement comes from hip, not back! SIDE-STEPS: With band above knees, walk sideways in small steps keeping knees slightly bent. 10 steps each direction.
Clamshell: 3 × 15 each side. Side-steps: 2 × 10 steps each direction
2.Glute bridge
Strengthens glutes and hamstrings, essential for the knee
Lying on back, knees bent, feet hip-width on floor. Squeeze glutes and lift pelvis from floor until forming straight line from shoulders to knees. Hold 2 seconds at top squeezing glutes, then lower slowly. Don't arch back! PROGRESSION: when 20 reps become easy, try single leg.
3 × 15-20 reps. Progression: 3 × 10-12 single leg
3.Controlled step-down
Key exercise to learn knee control during movement
Standing on low step (10-15 cm), leg to train on step, other leg hanging. SLOWLY lower bending leg on step until touching floor with other heel. IMPORTANT: knee must stay ALIGNED with foot, must not "collapse" inward! Rise up. If knee collapses, use mirror to correct or reduce step height.
3 × 10 per leg, slowly (3-4 seconds to lower)
4.Wall sit / wall squat
Isometric quadriceps strengthening in safe position
Back completely against wall. Slide down until thighs form 45-60° angle (NOT 90° - may hurt!). Feet far enough forward that knees don't pass toe tips. Hold position. If knee hurts, don't go as low.
3 × 30-45 seconds. Alternative: chair sit-to-stand 3 × 10
5.Quadriceps and hip flexor stretch
Tight muscles contribute to patellar pain - stretching is important
QUADRICEPS: Standing (supported for balance), bend knee and pull heel toward buttock with hand. Keep knees together, don't spread. HIP FLEXORS: Lunge with back knee on cushion. Push hips forward feeling stretch in front of back leg's hip.
3 × 30 seconds each side, per muscle
6.Dynamic valgus control
Learning not to let knee "collapse" inward during movements
In front of mirror, do squat or step-down. OBSERVE knees: must stay aligned over 2nd-3rd toe, not collapse inward. Video recording can help see any errors. Actively correct using glutes to "push" knees outward.
10 reps with visual feedback, 1-2 times daily
7.Side-lying hip abduction
Isolated gluteus medius strengthening: the muscle most associated with patellofemoral pain
Lie on your side, bottom leg bent. Lift the straight top leg about 30-40 cm, toes slightly turned down, pelvis still (do not roll back). Up in 2 seconds, hold 1 second, down in 3 seconds. International guidelines recommend combining hip and knee exercises: the hip component gives faster relief in the first weeks.
3 × 12-15 each side, 3 times a week (then with 0.5-1 kg ankle weight)
8.Single-leg glute bridge
Bridge progression: strengthens glutes and hamstrings and stabilises the pelvis
Lying on your back, one foot on the floor, the other leg extended or hip flexed to 90°. Lift the pelvis using only the support leg, keeping the pelvis perfectly level. Hold 2 seconds, lower in 3 seconds. If the pelvis tilts, go back to the double-leg bridge.
3 × 8-12 each side
9.Ankle mobility (knee-to-wall)
A stiff ankle increases patellar load during squats, stairs and landings
Foot about 10 cm from the wall, heel firmly down. Bend the knee trying to touch the wall with the kneecap, keeping the knee aligned over the 2nd-3rd toe. If easy, move the foot back 1 cm at a time. Compare both sides: a large difference is often linked to the knee collapsing inward.
10-15 reps each side, daily
10.Load management and low-impact activity
Patellofemoral pain improves by modulating load, not with complete rest
Use the pain rule: during and after exercise pain must stay at or below 5/10 and return to usual levels within 24 hours. If the knee is more painful the next morning, the previous day's load was too much. Temporarily reduce downhill walking, stairs, jumping and deep squats, while keeping swimming, cycling (high saddle) or elliptical. Increase load by 10-20% per week. Complete rest is not advised: it reduces strength and delays recovery.
Daily pain monitoring (0-10 scale); weekly progression
RED FLAGS - When to stop and contact the doctor immediately
Stop the exercises immediately and contact the specialist (or go to the emergency department if severe) if any of the following occur:
- Acute or sudden pain during exercise
- Significant swelling after exercises
- Pain that progressively worsens over days
- Fever or general malaise
- Difficulty walking or using the limb after exercises
- Any neurological symptoms (tingling, numbness, sudden weakness)
- Fever, redness or warmth of the joint, or inability to bear weight
In case of doubt, always prefer a check-up over continuing the exercises.
Dott. Daniele Priano
Ortopedia Pediatrica - ASST Gaetano Pini-CTO
ortopediaevolutiva.com • 26/08/2026
Versione Web
Google
MioDottoreBefore You Start
Who is this guide for?
Adolescents with anterior knee pain (patellofemoral syndrome). Quadriceps strengthening and movement control are essential.
What you need
Clear floor space, mat or soft surface, comfortable clothing. Some exercises may require resistance bands or supports.
Suggested frequency
Usually 1-2 times daily, as directed during the visit. Consistency is more important than intensity.
Common mistakes to avoid
- •Exercises that increase patella load (deep squats, lunges)
- •Neglecting hip stabilizer strengthening
- •Not following gradual progression
⚠️ Red flags — when to stop and contact the doctor immediately
Stop exercises immediately and contact the specialist if any of the following occur:
- Acute or sudden pain during exercise
- Significant swelling after exercises
- Pain that progressively worsens over days
- Fever or general malaise
- Difficulty walking or using the limb after exercises
- Any neurological symptoms (tingling, numbness, sudden weakness)
Detailed Exercises
- 1
Gluteus medius strengthening (clamshell and side-steps)
Gluteus medius controls the knee - strengthening it reduces patellar pain
CLAMSHELL: Lying on side, knees bent 90°, feet together. Open knees like a clamshell keeping feet together. Movement comes from hip, not back! SIDE-STEPS: With band above knees, walk sideways in small steps keeping knees slightly bent. 10 steps each direction.
Clamshell: 3 × 15 each side. Side-steps: 2 × 10 steps each direction - 2
Glute bridge
Strengthens glutes and hamstrings, essential for the knee
Lying on back, knees bent, feet hip-width on floor. Squeeze glutes and lift pelvis from floor until forming straight line from shoulders to knees. Hold 2 seconds at top squeezing glutes, then lower slowly. Don't arch back! PROGRESSION: when 20 reps become easy, try single leg.
3 × 15-20 reps. Progression: 3 × 10-12 single leg - 3
Controlled step-down
Key exercise to learn knee control during movement
Standing on low step (10-15 cm), leg to train on step, other leg hanging. SLOWLY lower bending leg on step until touching floor with other heel. IMPORTANT: knee must stay ALIGNED with foot, must not "collapse" inward! Rise up. If knee collapses, use mirror to correct or reduce step height.
3 × 10 per leg, slowly (3-4 seconds to lower) - 4
Wall sit / wall squat
Isometric quadriceps strengthening in safe position
Back completely against wall. Slide down until thighs form 45-60° angle (NOT 90° - may hurt!). Feet far enough forward that knees don't pass toe tips. Hold position. If knee hurts, don't go as low.
3 × 30-45 seconds. Alternative: chair sit-to-stand 3 × 10 - 5
Quadriceps and hip flexor stretch
Tight muscles contribute to patellar pain - stretching is important
QUADRICEPS: Standing (supported for balance), bend knee and pull heel toward buttock with hand. Keep knees together, don't spread. HIP FLEXORS: Lunge with back knee on cushion. Push hips forward feeling stretch in front of back leg's hip.
3 × 30 seconds each side, per muscle - 6
Dynamic valgus control
Learning not to let knee "collapse" inward during movements
In front of mirror, do squat or step-down. OBSERVE knees: must stay aligned over 2nd-3rd toe, not collapse inward. Video recording can help see any errors. Actively correct using glutes to "push" knees outward.
10 reps with visual feedback, 1-2 times daily - 7
Side-lying hip abduction
Isolated gluteus medius strengthening: the muscle most associated with patellofemoral pain
Lie on your side, bottom leg bent. Lift the straight top leg about 30-40 cm, toes slightly turned down, pelvis still (do not roll back). Up in 2 seconds, hold 1 second, down in 3 seconds. International guidelines recommend combining hip and knee exercises: the hip component gives faster relief in the first weeks.
3 × 12-15 each side, 3 times a week (then with 0.5-1 kg ankle weight) - 8
Single-leg glute bridge
Bridge progression: strengthens glutes and hamstrings and stabilises the pelvis
Lying on your back, one foot on the floor, the other leg extended or hip flexed to 90°. Lift the pelvis using only the support leg, keeping the pelvis perfectly level. Hold 2 seconds, lower in 3 seconds. If the pelvis tilts, go back to the double-leg bridge.
3 × 8-12 each side - 9
Ankle mobility (knee-to-wall)
A stiff ankle increases patellar load during squats, stairs and landings
Foot about 10 cm from the wall, heel firmly down. Bend the knee trying to touch the wall with the kneecap, keeping the knee aligned over the 2nd-3rd toe. If easy, move the foot back 1 cm at a time. Compare both sides: a large difference is often linked to the knee collapsing inward.
10-15 reps each side, daily - 10
Load management and low-impact activity
Patellofemoral pain improves by modulating load, not with complete rest
Use the pain rule: during and after exercise pain must stay at or below 5/10 and return to usual levels within 24 hours. If the knee is more painful the next morning, the previous day's load was too much. Temporarily reduce downhill walking, stairs, jumping and deep squats, while keeping swimming, cycling (high saddle) or elliptical. Increase load by 10-20% per week. Complete rest is not advised: it reduces strength and delays recovery.
Daily pain monitoring (0-10 scale); weekly progression
Frequently Asked Questions
Does anterior knee pain go away on its own?
In most cases yes, especially in adolescence. However, without adequate muscle strengthening (glutes, quadriceps, core), pain may persist or recur. An exercise program speeds recovery and prevents relapses.
Which sports to avoid with anterior knee pain?
In the acute phase, limit activities with repetitive load on the patella: jumping, downhill running, stairs, deep squats. Prefer swimming, cycling and low-impact activities. Sport is not forbidden, but should be adapted to pain intensity.
My knee "cracks" when I bend: is it serious?
Joint noises (crepitus) without pain are very common and generally harmless, especially in adolescence. They become relevant only if associated with pain, swelling or joint locking. In that case, specialist evaluation is recommended.