Weak Knees: Causes, Signs & Tips To Keep Them Healthy

Weak knees can also be caused due to a sedentary lifestyle, muscle injury, or mechanical problems like muscle imbalance or knee injuries.

Sushmita Sharma
Written by: Sushmita SharmaUpdated at: Feb 03, 2023 15:26 IST
Weak Knees: Causes, Signs & Tips To Keep Them Healthy

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Knee pain is quite common and can occur to anyone or people of any age group. Your knees become weaker as you age or when you overuse them. It can also be caused due to a sedentary lifestyle, muscle injury, or mechanical problems like muscle imbalance or knee injuries. Keep reading to learn common causes and signs of weak knees so you can take the necessary measures to treat them.

Common Causes Of Weak Knees

Some of the common causes of weak knees are as follows:

  • Fatigue
  • Muscle weakness
  • Overuse of knees
  • Obesity
  • Post-menopause effects
  • Strains and pains
  • Sedentary lifestyle or lack of physical activity
  • Ligament tear or torn cartilage
  • Degeneration caused by ageing

Serious Causes That Indicate You Have Weak Knees

  • Arthritis
  • Nerve disorders
  • Fractures in bones
  • Spinal degeneration or spinal stenosis
  • Spinal cord injury
  • Tendinitis

Signs Of Weak Knees

Severe Knee Pain

If you have been experiencing severe knee pain for a long time, it may indicate that you have weak knees. You may have pain in one joint or in both joints depending upon the cause of your pain. 

Stiff Knees

Stiff knees are a common health issue that is prevalent in many people. It is caused by injuries, extra weight, or mechanical problems. Arthritis is one of the most common health conditions for stiff knees. 

Also Read: Expert Talk: Persistent Knee Pain Which Could Be A Sign Of Osteoarthritis. How To Manage

Cracking Sound

Have you ever heard the cracking sound while bending or moving your knees? This may be due to weak knees, which occur when your knees are unstable or in the condition that they may break or deform easily. You should visit your doctor immediately if your knees freeze or get stuck often.

Difficulty Straightening Your Knees

You may have weak knees if you often face difficulty straightening your knees. One of the most common reasons for this cause is osteoarthritis. In addition, sports persons or marathoners are also prone to this.

Swelling Of Knees

Another sign of weak knees can be swelling of your joints. It can occur on one or both knees and cause pain or stiffness in your knees. This occurs typically when excess fluids get collected in or around the areas of your joints. 


There may be redness of the joints due to knee injury or the surrounding areas. This is another indication of weak knees that you should get checked by the doctor.

Also Read: 5 Daily Habits That May Damage Your Joints

Tips To Keep Your Knees Healthy

Taking care of your knees is essential to avoid knee pain or problems that may cause serious complications. Here are some tips that you should follow.

Manage Weight

You should eat healthy and maintain a healthy weight to avoid putting strain on your knees. 

Stay Active

A sedentary lifestyle can weaken your knees; therefore, it is essential to stay active. Go walking or biking to strengthen your knees and rebuild your joints. 

Listen To Your Body

It is important to listen to your body and visit your doctor when you have pain or any problems in your knees.