Why Your Knees Hurt When Squatting (And How to Fix It)

The Mechanics of Knee Pain in the Squat

Many lifters accept knee discomfort as an unavoidable byproduct of heavy training. However, joint pain during deep knee flexion is almost always a sign of mechanical error, poor tissue tracking, or inadequate localized warmth. When you descend under a heavy load, your patella (kneecap) needs to glide smoothly along the femoral groove. If your muscles are firing unevenly, it pulls the kneecap out of alignment, causing friction and inflammation.

Focusing on retaining joint mobility through targeted warm-ups and keeping the joint physically warm is vital to preventing long-term cartilage wear.

Step 1: Fix Your Hip Tracking

If your knees cave inward (valgus collapse) when you try to push out of the bottom of a squat, your glutes are not firing correctly. This structural collapse places immense lateral torque on your knee ligaments. To fix this, you must spend time activating your lateral hip stabilizers. Running through a quick 15 minute resistance band glute workout before touching an unweighted barbell will force your hips to track outward, immediately relieving pressure from your kneecaps.

Step 2: Utilize Compression and Heat

When structural form is sound, lingering dull aches are often caused by poor blood flow. Tendons naturally receive far less blood supply than muscle tissue, meaning they take longer to warm up and heal. Wearing an anatomically designed compression sleeve retains therapeutic heat around the joint capsule, increasing the volume of synovial fluid—the body’s natural lubricant—and providing reassuring physical feedback as you hit your depth targets.

Stop letting joint discomfort stall your progress under the barbell. Keep your knees stabilized and warm by grabbing a pair of our high-quality Compression Knee Support Sleeves on Bolt & Bound.