Knee

Smarter Golf Starts With Better Motion

THE KNEES

The knees are the wheels behind your lower body mechanics. When they move correctly and remain stable, everything above them functions more efficiently. Using the SpineAlign Golf App with the Hip Turn function, the app measures your hip turn angle and provides real-time feedback once you reach a minimum of 17° of hip rotation. This gives golfers an immediate benchmark for proper lower-body engagement. Most professional golfers achieve approximately 25° of hip turn during the backswing and maintain strong rotational positioning through impact. That level of rotation is supported by proper knee movement and stability. When your knees are working correctly: Your hips rotate more efficiently Your weight transfer improves Your balance stabilizes Your power output increases Strong, stable knee mechanics make the rest of your lower body perform with greater ease — creating a more repeatable and powerful golf swing.

This stands in contrast to knee mechanics that create stiffness in lower-body movement. One of the most common faults occurs when the trail (right) knee straightens during the backswing. When the right knee locks out, it restricts the pelvis from rotating naturally. Instead of allowing the lower body to coil efficiently, the golfer loses dynamic stability. A straight right knee during the backswing can: Limit proper hip rotation Reduce elastic loading in the lower body Disrupt balance and pressure shift Make the downswing sequencing more difficult When the right knee maintains flex and stability, it supports a natural coiling motion in the backswing and a powerful uncoiling through impact. This allows the hips to rotate freely while maintaining control, producing more consistent speed and improved ball striking. Efficient knee mechanics don’t just improve mobility; they create the foundation for repeatable power.

How to Stop Locking up your Right Knee

Set the Proper Knee Flex at Address

To set yourself up for a consistent, powerful swing, always begin at the correct spine angle using the SpineAlign Golf App. Starting at the proper spine angle: Establishes ideal, athletic posture; makes the correct amount of knee flex easier to feel; promotes balance and stability throughout the swing. What you create at address should feel natural and athletic for your body, not forced or stiff. Aim for slight knee flex — just enough to stay dynamic and ready to move.
Setting up incorrectly at address can cause compensations later — especially changing your right knee flex during the backswing. Using the SpineAlign Golf App helps you establish the correct spine angle first, so your lower body can stay stable and responsive. Key setup reminders: ✅ Start with a slight, athletic knee bend. ❌ Avoid excessive knee flex — too much bend creates tension and movement issues. ❌ Never start with locked knees — this restricts motion and balance. When your spine angle is correct and your knees are softly flexed, your setup will feel natural and athletic. From there, your right knee can maintain its structure throughout the backswing without unnecessary adjustments.

the knees require flexing in a golf swing

Imagine your Right Knee is Tied to the Ball (or the Tee)

Here is a good mental image that you can use in order stop locking your right knee during your backswing.
Imagine that your right knee is attached to the ball (or to the tee under) with a piece of string. Imagine that this string has tension when you set up to the ball.
Now imagine that pulling on that string during the backswing – by locking your right knee and moving away from the ball – will break the string or pull the ball or the tee out of its initial position. 
Focus on keeping the flex in your right knee in such a way that you would not be breaking the string.

Lean in Your Right Knee

To get the feel of the right knee flex mechanic, lean into it a little bit at address. This gives you a feel of what the knee should be doing during the backswing.

As a swing trigger, it cements that position since before the takeaway can proceed. It helps in preventing the knee from moving laterally and it also helps in setting and keeping the angle of the knee, which is what is being sought here.