I Have Knee Pain When I Play Tennis and My Knee Swells Up

Knee pain when you play tennis and your knee swells up can happen when repeated lunges, stops, and turns irritate the area and cause swelling to build during play.

When your knee starts hurting and swelling during tennis, you may notice the change after repeated rallies, quick stops, or a series of wide lunges. The knee has to bend, straighten, and support your weight over and over, and that repeated demand can irritate the patellar tendon, muscles, and other tissues around the joint.

As irritation increases, extra fluid can collect around the knee and make normal movement harder. That swelling can change how easily you bend your knee for a low shot or straighten your leg as you push back toward the center of the court.

Your Knee Takes More Stress With Every Lunge

Repeated lunges make your knee absorb and control your body weight again and again.

When you reach for a wide ball, your knee bends deeply while the muscles around it work to control the movement and help you push back up. If the area is already irritated, repeating that motion can increase the stress around the knee and contribute to swelling. The more often you have to drop low and push back up, the harder it can become to move comfortably.

The Swelling Builds As You Keep Playing

Continued court movement can make the swelling more noticeable as the session goes on.

Quick stops, changes of direction, and repeated push-offs keep asking the knee to work without much interruption. As the surrounding tissues become fatigued, continued movement can aggravate the area and cause swelling to increase. You may start the match with manageable pain and then notice your knee becoming more swollen and uncomfortable later in the session.

Why Your Knee Swelling Keeps Returning During Tennis

Your knee has a hard time healing when blood flow and circulation are limited.

Tendons, ligaments, and other soft tissues naturally receive less blood supply than many other parts of the body. Because of this, they often take longer to heal after repeated stress or injury, leaving you more vulnerable to lingering pain and a cycle of reinjury.

When circulation through the area remains limited, injured tissues have a harder time receiving the vital oxygen and nutrients they need to repair and heal. This can leave your knee feeling stiff, tight, weak, or painful during everyday movement and activity.

What Can Help Your Knee Feel Better

Your knee starts feeling better when blood flow and circulation improve.

Chinese herbs have been used for centuries to promote healthy blood flow and circulation. Their medicinal properties help break up stagnant blood and fluids that remain trapped around injured tissues, interfering with circulation. As circulation improves, blood flows more freely through the area, allowing those tissues to receive the oxygen and nutrients they need to heal properly.

Topical herbal remedies made with these Chinese herbs can help relieve pain while improving blood flow and circulation to injured tissues. The right product depends on your symptoms and whether you're in the acute or chronic stage of recovery.

If you have pain, swelling, inflammation, or bruising, Acute Sinew Liniment helps relieve these symptoms by increasing circulation and dispersing stagnant blood and fluids around the injured area to speed recovery. During the acute stage of healing, getting circulation moving early allows injured tissues to receive the fresh blood, oxygen, and nutrients they need to repair and heal.

If your injured area is especially swollen, red, or warm to the touch after a recent injury or flare-up, Sinew Herbal Ice is also used to reduce swelling and inflammation while restoring normal circulation so you can quickly regain range of motion. While traditional ice is commonly used to reduce swelling, Sinew Herbal Ice acts as an ice alternative to reduce swelling and inflammation while also dispersing accumulated blood and fluids to speed the healing process.

If you no longer have swelling or inflammation, but still have pain, stiffness, weakness, or sensitivity in cold and damp weather, Chronic Sinew Liniment helps relieve these symptoms by strongly stimulating circulation and increasing blood supply to injured tendons and ligaments to promote their healing. This is especially important because tendons and ligaments naturally receive less blood supply, which is why chronic injuries can take longer to heal.

If you have residual pain and stiffness, or the area becomes more painful in cold weather, Sinew Injury Poultice is also used to significantly stimulate circulation to injured tendons and ligaments to further promote their healing. By strongly increasing circulation, it counteracts the reduced blood flow caused by cold weather that commonly aggravates chronic tendon and ligament injuries.

If you exercise, play sports, or do other strenuous activities, Sinew Sports Massage Oil warms and stimulates muscles for exertion and relieves muscle tightness and soreness after activity. Warming and preparing your muscles before activity can improve flexibility, enhance performance, and reduce the risk of injury.

Frequently Asked Questions

You may also find these commonly asked questions helpful.

Why does my knee hurt and swell when I play tennis?

Repeated lunges, stops, turns, and push-offs can irritate your knee and contribute to swelling as you continue playing.

Why does my knee swell more the longer I play tennis?

Continued court movement repeatedly stresses the knee, which can increase irritation and make swelling more noticeable later in your session.

Why does my knee swell after playing tennis?

Your knee may swell after tennis when repeated movement has irritated the area enough to trigger a buildup of fluid around the joint.

Can tennis make knee swelling worse?

Yes. Continuing to lunge, stop, turn, and push off while your knee is irritated can increase the stress on the area and worsen swelling.

When should I have knee pain and swelling checked?

Persistent, severe, or worsening knee pain and swelling should be evaluated by a qualified healthcare professional.

The information provided here is intended to help you better understand your symptoms and recovery, but it is not a substitute for professional medical advice, diagnosis, or treatment.

Persistent, severe, or worsening symptoms should be evaluated by a qualified healthcare professional.