Knee pain is one of the most common complaints among aging adults. Many people notice that their knees seem to protest more as they age.
It can be a dull ache after a long day or sharp discomfort during physical activity. But why does this happen—and more importantly, what can you do about it?
Why Knee Joint Pain Increases with Age
Here’s a detailed look at some of the common causes of knee pain causes:
1. Wear and Tear (Osteoarthritis)
The most common culprit for knee pain is osteoarthritis. This is a degenerative joint condition that results from the gradual breakdown of cartilage. Cartilage acts as a cushion between bones. Over time, repeated use and age-related degeneration can wear it down, leading to inflammation, stiffness, and pain.
When you have knee osteoarthritis, your knee might hurt when you put pressure on it. It may feel stiff when you first get up in the morning, or when you stand after sitting for a long time.
In more severe cases, your knee may also become swollen or feel puffy, and you may hear a cracking noise when you move it. It can feel wobbly, lock up or feel stuck when you try to move it.
2. Decreased Muscle Mass
Age-related muscle loss is a natural process where muscle mass and strength decline with age. This is known by the medical term, “sacropenia.” It typically begins around the age of 30 to 40 and accelerates after the age of 60.
This decline in muscle mass is particularly noticeable in the quadriceps and hamstrings, which support the knee.
Weaker muscles can’t absorb as much shock or stabilize the knee joint as effectively, putting more strain on the joint itself. This can exacerbate pain and potentially accelerate the progression of osteoarthritis.
3. Reduced Joint Fluid
Our freely moving joints, including the knees, are called synovial joints. Each of these joints has a cavity filled with synovial fluid. This acts as a lubricant, reducing friction between cartilage surfaces during movement. It also provides nutrients to the cartilage.
Our synovial fluid tends to decrease with age. As we age, the synovial membrane, which is responsible for producing synovial fluid, may change. This, in turn, leads to a decline in the amount of fluid produced. Less fluid means more friction and discomfort during movement.
4. Weight Gain
Many people gain weight as they age, which adds extra pressure to weight-bearing joints, such as the knees. This excess weight has a significant impact on knee biomechanics.
For every extra pound of body weight you carry, your knees experience four to six pounds of additional pressure.
For instance, carrying an extra 25 pounds can make your knee joints feel as if they’re under an additional 100 to 150 pounds of pressure.
This added wear and tear on your joints can be significant.
Individuals with obesity are 20 times more likely to need a knee replacement than those who are not overweight.
5. Past Injuries
Past knee injuries, including minor ones, can significantly increase the risk of future chronic knee issues later in life.
Ligament tears, meniscus injuries, or fractures can predispose your knee to degeneration or recurring pain. They can cause scar tissue, joint instability, and changes in cartilage or bone structure.
What You Can Do About It
Suffering through knee aches and pain isn’t inevitable. Here are some of the actions that you can take to minimize or even avoid knee ache and pain issues for knee pain relief:
1. Strengthen Supporting Muscles
Engage in strength training. You should particularly focus on exercises that target the quadriceps, hamstrings, and glutes. This can help stabilize and protect the knee joint.
Resistance bands, squats, and leg lifts are all great options.
If you are unsure of how to exercise correctly, consider consulting an athletic trainer. They can help you with injury prevention when exercising and assist you in getting the most out of your routines while maintaining safety.
2. Maintain a Healthy Weight
Maintaining a healthy body weight significantly reduces pressure on your knees and lowers your risk of developing osteoarthritis.
It’s a delicate balance, however, as you don’t want to be underweight either. Low body weight, particularly for older adults, also increases the risk of osteoporosis.
3. Low-Impact Exercise
Low-impact exercises are beneficial for individuals with knee issues. These kinds of exercises reduce joint stress while still offering an effective workout.
Swimming, cycling, and walking are excellent activities for staying active without putting undue stress on the knees. Avoid high-impact sports that involve running and jumping if your knees are already sensitive.
4. Use Proper Footwear
Supportive, cushioned shoes can help align your legs and reduce the stress on your knees. Avoid high heels or worn-out shoes.
Running or athletic shoes with a thick midsole and supportive heels can make a big difference. Consider shoes with a neutral or mild-stability design.
If you have specific foot issues like flat feet, consider consulting an expert to help you choose shoes that meet your needs.
5. Apply Ice or Heat
Ice helps reduce inflammation after activity, while heat can loosen stiff joints before movement.
Ice is usually suggested for new injuries and swelling. On the other hand, heat is often more beneficial for muscle stiffness and ongoing pain.
Alternating between ice and heat can be beneficial for reducing pain and swelling, but use them appropriately.
6. Consider Physical Therapy
A physical therapist can help with knee therapy for pain relief.
They can design a personalized exercise and stretching plan to improve knee function and reduce pain over time.
This approach can improve movement and strengthen the muscles surrounding the knee, helping to support the joint and reducing the risk of future injuries.
7. Talk to Your Doctor
If your pain persists or worsens, it may be time to consult a healthcare provider for knee pain treatment.
A doctor may discuss options like corticosteroid injections, viscosupplementation (injections to improve joint lubrication), or knee braces. In severe cases, peripheral nerve stimulation and even joint replacement surgery may be considered.
The Bottom Line
Aching knees aren’t an inevitable part of aging, but they are common.
Focus on understanding what causes joint issues. Take proactive measures to support joint health. By being proactive, you can alleviate pain, maintain mobility, and enhance your quality of life well into your senior years.
Early action is key. Your knees will thank you for it.