Why Does My Knee Hurt When I Squat or Stand Up From a Chair?

Why Does My Knee Hurt When I Squat or Stand Up From a Chair? A Physical Therapist Answers

By Nova Physical Therapy | North Hollywood, CA

Patient Question

“Why does my knee hurt when I squat, get up from a chair, or bend my knee, and can physical therapy help?”

The Short Answer

Knee pain during squatting, sitting down, or standing up from a chair is a common musculoskeletal complaint. These activities require coordinated movement and muscle performance from the hips, knees, ankles, and trunk while the knee manages progressively changing loads.

Symptoms may be influenced by factors such as changes in activity, reduced quadriceps or hip muscle performance, mobility limitations, previous injuries, movement coordination, repetitive loading, or the body's current tolerance to physical activity.

Pain during a squat does not automatically mean that you are damaging your knee, cartilage, or meniscus.

A licensed physical therapist can evaluate strength, mobility, balance, movement patterns, and functional limitations to determine whether physical therapy is appropriate and develop an individualized rehabilitation program.

Why Does My Knee Hurt When I Squat?

Squatting is a normal human movement.

We perform variations of a squat when we:

• Sit in a chair
• Stand up
• Use the toilet
• Pick something up
• Exercise
• Garden
• Perform household activities
• Participate in sports

As the knee bends during a squat, the physical demands on the knee and surrounding muscles change.

Several factors may influence symptoms, including:

• Quadriceps muscle performance
• Hip muscle performance
• Ankle mobility
• Hip mobility
• Movement coordination
• Previous knee injuries
• Sudden increases in exercise
• Repetitive loading
• Physical conditioning

A physical therapy evaluation can help identify which factors are relevant to your individual presentation.

Why Does My Knee Hurt When I Stand Up From a Chair?

Standing from a chair requires the lower-extremity muscles to generate enough force to raise your body against gravity.

The quadriceps, gluteal muscles, calf muscles, and trunk all contribute to the movement.

Symptoms may become more noticeable when:

• Getting up from a low chair
• Standing after prolonged sitting
• Getting out of a car
• Rising from a couch
• Repeatedly sitting and standing
• Standing while carrying something

Reduced lower-extremity strength or activity tolerance may make these activities more challenging for some individuals.

Does Knee Pain During Squatting Mean I Have Arthritis?

Not necessarily.

Knee osteoarthritis is one possible cause of knee symptoms, particularly as people age, but pain during squatting alone cannot establish a diagnosis.

Knee symptoms may occur with many different musculoskeletal presentations.

Research has also demonstrated that structural changes seen on imaging do not always correlate directly with pain severity or functional limitations.

A physical therapist evaluates the patient's symptoms, movement, muscle performance, medical history, and functional limitations rather than relying on one symptom alone.

Does Knee Pain Mean My Cartilage Is Wearing Away?

Pain does not provide a direct measurement of cartilage health.

Knee pain is influenced by multiple factors and should not automatically be interpreted as evidence that the joint is being damaged every time it moves.

This distinction is important because fear of movement can sometimes lead people to unnecessarily avoid activities such as:

• Walking
• Squatting
• Exercising
• Climbing stairs
• Recreational activities

When medically appropriate, rehabilitation may focus on gradually improving the body's capacity to perform these activities.

What About Clicking or Cracking in My Knee?

Knee noises are common.

People may notice:

• Clicking
• Popping
• Cracking
• Grinding sensations

These sounds are sometimes described as crepitus.

Knee noises without pain, swelling, instability, or functional limitation do not automatically indicate an injury.

However, new mechanical symptoms following an injury, particularly when accompanied by significant pain, swelling, locking, or loss of function, should be appropriately evaluated.

Are Squats Bad for Your Knees?

Squatting is not inherently bad for the knees.

It is a normal movement used throughout daily life and is commonly incorporated into rehabilitation and exercise programs.

The appropriate squat:

• Depth
• Resistance
• Volume
• Speed
• Frequency

depends on the individual's current abilities, symptoms, goals, and clinical presentation.

For one person, a partial body-weight squat may be appropriate. Another individual may eventually tolerate deeper or externally loaded squats.

Exercise should be progressed based on the individual rather than applying one universal rule.

Should My Knees Never Go Over My Toes?

The idea that the knees must never move beyond the toes during a squat is an oversimplification.

Normal movements such as stair climbing, kneeling, sitting, and squatting can naturally involve forward movement of the knee.

Restricting knee movement may also shift physical demands to other areas of the body.

Instead of focusing on a rigid rule, a physical therapist can evaluate how the entire movement is performed and determine whether modifications are appropriate for your symptoms and goals.

Can Strengthening Help Knee Pain?

For many common knee conditions, exercise and progressive strengthening are important components of rehabilitation.

Depending on examination findings, exercises may address:

• Quadriceps
• Hip abductors
• Hip extensors
• Hamstrings
• Calf muscles
• Trunk musculature
• Overall lower-extremity endurance

Exercise selection and progression should be individualized.

The goal is not simply to make one muscle stronger. It is to improve the physical capacity needed for walking, stairs, squatting, work, exercise, and everyday activities.

Can Physical Therapy Help Knee Pain?

Current clinical practice guidelines strongly support exercise-based rehabilitation for several common knee conditions, including patellofemoral pain and knee osteoarthritis.

Depending on examination findings, physical therapy may include:

• Therapeutic exercise
• Progressive strengthening
• Hip and knee strengthening
• Mobility exercises
• Balance training
• Functional movement training
• Squat progression
• Sit-to-stand training
• Stair training
• Walking progression
• Activity modification education
• Home exercise programs
• Manual therapy when clinically indicated

Physical therapy focuses on improving movement, physical capacity, and function rather than treating every patient with the same exercise program.

What Does Research Say?

Clinical practice guidelines for patellofemoral pain support exercise therapy targeting the hip and knee musculature.

Exercise is also strongly recommended as part of conservative management for knee osteoarthritis.

Contemporary rehabilitation emphasizes progressively exposing the body to appropriate physical demands rather than assuming that normal movements such as squatting should always be avoided.

Treatment decisions should be based on the patient's clinical presentation, functional limitations, response to activity, and goals.

What Happens During a Physical Therapy Evaluation?

At Nova Physical Therapy, every patient receives an individualized evaluation that may include:

• Medical history review
• Symptom behavior assessment
• Knee mobility assessment
• Hip and ankle mobility assessment
• Strength testing
• Lower-extremity muscle performance assessment
• Balance assessment
• Walking assessment
• Squatting assessment when appropriate
• Sit-to-stand assessment
• Stair assessment when appropriate
• Activity limitation assessment
• Review of work or sports demands
• Goal setting

Your physical therapist also screens for findings that may require additional medical evaluation.

Following the evaluation, an individualized plan of care is developed based on your examination findings and personal goals.

When Should You Seek Medical Attention?

Although many cases of knee pain are musculoskeletal, medical evaluation may be necessary if symptoms include:

• Significant trauma
• Inability to bear weight
• Significant or rapidly increasing swelling
• Visible deformity
• A hot, markedly swollen joint associated with fever
• Persistent locking of the knee
• Significant instability following an injury
• Progressive weakness
• Rapidly worsening symptoms

Seek appropriate medical attention if these or other concerning symptoms occur.

Why Patients Choose Nova Physical Therapy

At Nova Physical Therapy, our mission is simple:

We Care.

We believe patients should understand their symptoms without becoming unnecessarily afraid of normal movement.

Our treatment philosophy emphasizes:

• Evidence-based care
• Individualized treatment plans
• Patient education
• Functional outcomes
• Progressive strengthening
• Movement optimization
• Appropriate activity progression
• Long-term health and wellness

Our goal is not simply to make your knee feel better while you are in the clinic. We want to help improve your ability to stand from a chair, squat, walk, climb stairs, work, exercise, and participate in the activities that matter to you.

Frequently Asked Questions

Why does my knee hurt when I squat but not when I walk?

Squatting generally requires greater knee bending and places different demands on the muscles and joints than level walking. Your current strength, mobility, activity tolerance, and movement strategy may influence symptoms.

Are squats bad if I have knee pain?

Not automatically. Squats can often be modified in depth, resistance, or volume based on the individual's symptoms and examination findings.

Does knee pain during squatting mean I tore my meniscus?

No. Pain during a squat alone cannot establish a meniscal injury. An appropriate clinical evaluation is needed.

Is knee cracking during squats dangerous?

Knee noises are common and do not automatically indicate joint damage. Painful clicking, swelling, locking, instability, or symptoms following significant trauma warrant appropriate evaluation.

Can physical therapy help me squat again?

Physical therapy may help address relevant strength, mobility, balance, movement-control, and activity-tolerance impairments and progressively restore squatting when appropriate.

Can I strengthen my knees if I have arthritis?

Exercise and strengthening are strongly supported for many individuals with knee osteoarthritis. The program should be individualized based on your health, symptoms, examination findings, and functional goals.

Schedule an Evaluation

If knee pain is affecting your ability to squat, stand from a chair, climb stairs, walk, exercise, work, or participate in everyday activities, Nova Physical Therapy can help.

Our licensed physical therapists provide comprehensive evaluations and individualized rehabilitation programs focused on improving movement, strength, physical capacity, and function.

Contact Nova Physical Therapy today to schedule your comprehensive physical therapy evaluation.

Disclaimer

The information provided in this article is intended for educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. Reading this article does not establish a physical therapist-patient relationship with Nova Physical Therapy or any of its providers.

Knee pain can have multiple causes. Pain during squatting, bending the knee, or standing from a chair does not establish a specific diagnosis. Treatment and exercise recommendations should be individualized based on a licensed physical therapist's examination, clinical judgment, medical history, patient presentation, current evidence, and applicable scope-of-practice requirements.

Physical therapists screen patients and refer to physicians or other appropriate healthcare professionals when findings require additional medical evaluation.

If you experience significant trauma, inability to bear weight, substantial swelling, visible deformity, fever associated with a hot or swollen knee, persistent locking, significant instability, or other concerning symptoms, seek appropriate medical attention.

Individual results may vary. Nova Physical Therapy does not guarantee specific outcomes from physical therapy, exercise, or any healthcare intervention discussed in this article.

References

1. Willy RW, et al. Patellofemoral Pain: Clinical Practice Guidelines Linked to the International Classification of Functioning, Disability and Health. Journal of Orthopaedic & Sports Physical Therapy. 2019.
2. American Academy of Orthopaedic Surgeons. Management of Osteoarthritis of the Knee (Non-Arthroplasty) Clinical Practice Guideline.
3. Kolasinski SL, et al. American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care & Research.
4. American Physical Therapy Association (APTA). Guide to Physical Therapist Practice.
5. World Health Organization (WHO). Musculoskeletal Health.
6. Physical Therapy Board of California (PTBC). Physical Therapy Practice Act.

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