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🦵Knee Exercises — Quad Strength and Movement Control

Knee · The knee is the body's largest joint and one of its most frequently injured, relying on ligaments and surrounding muscles rather than bony shape for stability.

OverviewAnatomyCommon problemsTests & assessmentExercise menuLoad progressionPrecautionsRecovery & return
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Quick answers

What is patellofemoral pain syndrome?

Patellofemoral pain syndrome describes pain around or behind the kneecap, often related to how the kneecap tracks in its groove during bending movements, and is common among runners and young active individuals.

What is the difference between the meniscus and the ACL?

The menisci are C-shaped cartilage cushions that absorb shock between the thigh and shin bones, while the anterior cruciate ligament (ACL) is one of several ligaments that control the knee's stability during rotation and forward sliding of the shin bone.

Does every meniscus tear need surgery?

Many meniscus tears, particularly smaller or degenerative tears in middle-aged and older adults, are managed successfully with exercise-based rehabilitation, while larger or mechanically unstable tears may be considered for surgical repair.

Is running bad for the knees?

Current evidence generally does not support the idea that recreational running increases the risk of knee osteoarthritis, and moderate running is often considered compatible with long-term joint health for most people.

What does a 'locked knee' mean?

A locked knee refers to an inability to fully bend or straighten the joint, often due to a displaced piece of torn meniscus or loose cartilage fragment, and typically warrants prompt evaluation.

How common is knee osteoarthritis?

Knee osteoarthritis is among the most common joint conditions affecting older adults, with prevalence increasing steadily with age and additional risk associated with prior injury and higher body weight.

Start with this section - Exercise menu

Knee exercise programs typically emphasize quadriceps and hip strengthening, since these muscle groups play a central role in absorbing load and controlling alignment during walking, running, and jumping.

For conditions such as patellofemoral pain and osteoarthritis, exercise-based approaches are consistently recommended as a first-line management strategy in clinical guidelines rather than rest alone.

Typical exercise menu

Simple picture of a move already published on this page — not a prescription or medical advice.

Follow the movementQuad set3 × 10, held 5s
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  1. 1 Start
  2. 2 Mid
  3. 3 End
Person performing an isometric quadriceps set exercise

Quad set

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3 × 10, held 5s

Sitting with the leg straight, gently tighten the thigh muscle to press the back of the knee down, without moving the leg.

Follow the movementStraight leg raise3 × 12
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  1. 1 Start
  2. 2 Mid
  3. 3 End
Person performing a straight leg raise exercise

Straight leg raise

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3 × 12

Lying on the back with one knee bent, lift the straight leg to hip height with control, then lower slowly.

Follow the movementHeel slide2 × 10
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  1. 1 Start
  2. 2 Mid
  3. 3 End
Person performing a heel slide exercise for knee mobility

Heel slide

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2 × 10

Lying on the back, slide the heel toward the buttock to bend the knee, then slide it back out.

Follow the movementClamshell3 × 12 each side
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  1. 1 Start
  2. 2 Mid
  3. 3 End
Person performing a clamshell exercise for hip and knee control

Clamshell

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3 × 12 each side

Lying on the side with knees bent, lift the top knee while keeping the feet together and the pelvis still.

Follow the movementMini squat3 × 12
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  1. 1 Start
  2. 2 Mid
  3. 3 End

Mini squat

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3 × 12

Lower the hips a short distance while keeping the knees tracking over the feet, then return to standing.

Follow the movementStep-down3 × 10 each side
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  1. 1 Start
  2. 2 Mid
  3. 3 End

Step-down

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3 × 10 each side

Standing on a low step, slowly lower the other foot toward the ground with control, keeping the knee aligned over the foot.

Follow the movementBodyweight squat3 × 12
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  1. 1 Start
  2. 2 Mid
  3. 3 End

Bodyweight squat

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3 × 12

Lower the hips back and down while keeping the knees tracking over the feet, then return to standing.

Follow the movementSingle-leg balance with reach3 × 8 each side
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  1. 1 Start
  2. 2 Mid
  3. 3 End

Single-leg balance with reach

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3 × 8 each side

Balancing on one leg, reach the opposite hand toward the floor with control while maintaining knee alignment.

Exercise progression generally moves from isolated quadriceps and hip activation toward functional, weight-bearing movements that mirror the demands of daily activity and sport.

Keep exploring

Anatomy

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Common problems

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Tests & assessment

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Load progression

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Precautions

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Recovery & return

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Neighbouring regions

Neighbouring topics share region literacy — not a severity ranking.

Hip

The hip is a deep, stable ball-and-socket joint that bears several times body weight during walking and running, making it a common site of both overuse pain and degenerative change.

Pain frequency 55 Same body region

ACL

The anterior cruciate ligament stabilizes the knee against pivoting and forward-sliding forces, and its rupture is one of the most studied and rehabilitation-intensive sports injuries.

Pain frequency 50 Same body region

Ankle & Foot

The ankle and foot absorb and redirect the full force of body weight with every step, making sprains and overuse injuries among the most common in sport and daily life.

Pain frequency 70 Same body region