Why Can't I Put Weight On My Knee After Playing Tennis?

Your knee feels too painful or unstable to put weight on after playing tennis because a ligament, meniscus, tendon, or other supporting structure may have been injured during a sudden movement on the court.

You may have finished a point, planted your foot to change direction, or landed after reaching for a shot when your knee suddenly became too painful to stand on. Instead of feeling sore, it feels like the knee simply will not support you, making even a few steps difficult.

This type of pain often develops immediately after a twisting movement or sudden stop. Depending on what was injured, your knee may swell quickly, catch when you try to bend it, or feel like it wants to give way every time you shift your weight onto that leg.

Every Step Feels Like The Knee Might Give Out

You may hesitate to walk because the knee no longer feels stable.

A sprained ligament, particularly the medial collateral ligament (MCL) or anterior cruciate ligament (ACL), can make your knee feel unreliable even if you are standing still. The moment you try to walk, your body may instinctively avoid putting full weight on the injured leg because the joint feels weak or unstable.

Twisting During Tennis Can Trap Something Inside The Joint

You may feel pain deep inside the knee along with catching or locking.

A torn meniscus can make it painful to bear weight because part of the cartilage becomes pinched as the knee moves. You might notice the knee bends only partway, feels stuck during certain movements, or becomes sharply painful whenever you try to straighten your leg fully.

Managing Tissue Stress, Circulation, and Recovery

Pain that keeps returning during movement, after activity, or once the body cools down often means the injured tendons, ligaments, muscles, or nearby connective tissues are still recovering from repeated strain. When an area stays tight, restricted, or painful with normal movement, the tissues may not be moving or recovering as smoothly as they should.

Repeated stress can also leave circulation slower around the injured area, making it harder for oxygen, nutrients, and excess tissue fluids to move normally through the tissues. Over time, this can leave the area feeling stiff, weak, tight, or easier to aggravate during repeated movement and activity.

Topical Recovery Support

For acute injuries with pain, swelling and inflammation, some people apply Acute Sinew Liniment to help relieve pain, reduce swelling and inflammation, and increase blood flow to injured tissues to support faster recovery and a quicker return to activity. Some also use it alongside Sinew Herbal Ice to help speed up the recovery process and restore normal circulation and range of motion.

For ongoing pain, stiffness, or slow-healing areas after swelling and inflammation have subsided, some people apply Chronic Sinew Liniment to help relieve pain, stimulate circulation, and support recovery in overstretched tendons and ligaments. Some also pair it with Sinew Injury Poultice to further stimulate circulation and support deeper tissue recovery in areas with persistent pain and stiffness.

To warm up muscles, reduce tightness, and improve flexibility before or after activity, some people apply Sinew Sports Massage Oil to help increase circulation, prepare muscles for movement, relieve tightness, and support flexibility after activity.

Safety Notes

This article provides general educational information about the topic described above.

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

Frequently Asked Questions

Should I keep walking if I can't put weight on my knee after tennis?

No. If your knee will not support your weight or repeatedly buckles, stop playing and have it evaluated as soon as possible.

Could I have torn a ligament during tennis?

Yes. A sudden twist, pivot, or awkward landing can injure knee ligaments and make weight-bearing difficult almost immediately.

Can a meniscus tear make it hard to stand?

Yes. A meniscus tear may cause sharp pain, locking, or catching that makes standing or walking very uncomfortable.

Is swelling expected after this type of knee injury?

Swelling is common after many knee injuries and may appear within minutes or gradually over the next several hours.

When should I seek medical care?

You should seek prompt medical evaluation if you cannot bear weight, your knee feels unstable, has significant swelling, or you heard a pop when the injury occurred.