Foot/ankle position

Foot/ankle position is one of those quiet influences that has huge knock-on effects up the chain, especially in riders who are “doing everything else right” but still feel crooked, unstable or blocked. I see this all the time, the rider loses a large area of contact on the ball of their foot, massively reducing the info your brain needs to stay vertical and balanced.

Supination in the Stirrup: Why Your Foot Position Shapes Your Whole Riding Posture

When we talk about rider alignment, we often start at the pelvis or core.

But functionally, everything begins at the foot.

One common pattern I see is supination in the stirrup – where the foot rolls to the outside edge, loading the little toe side of the foot.

This might look subtle… but its effects travel all the way up the body.

What is Supination in the Stirrup?

Supination is when:

The weight sits on the outside border of the foot

The ankle appears more rigid or “braced”

The heel may look down, but without true shock absorption

In riders, this often shows up as:

Pressure into the outside of the stirrup

A foot/ankle that feels “locked” rather than responsive

The Chain Reaction Up the Body

Because the body works as an integrated system, supination doesn’t stay at the foot.

Foot & Ankle

Reduced ankle mobility or even pain.

Poor ability to adapt to the horse’s movement

Less elastic shock absorption, the ankle is the first joint to absorb movement between the rider and the stirrup. The more it absorbs here, the less travels up the chain to be dissipated.

 Lower Leg

Tibia tends to externally rotate

Calf over-activity, reduced subtle control

Lower leg feels unstable or swings

 Hip

Femur follows into external rotation

Hip loses its ability to internally rotate when needed

Rider may grip or brace with the thigh

 Pelvis

Pelvis often shifts or rotates asymmetrically or if both feet affected then the pelvis rotates posteriorly into a chair seat.

One seat bone may load more than the other

Neutral pelvis becomes harder to maintain

 Spine

Compensatory rotation or side-bending

Loss of independent seat

Increased effort to “sit straight”

Why This Matters for the Horse

A supinated foot doesn’t just affect the rider:

A braced leg transmits tension to the saddle

Asymmetrical pelvic loading influences the horse’s back

Clear, quiet aids become harder to deliver

In other words:

The horse feels what the foot can’t absorb.

Key Takeaway

If you’re working hard on:

seat stability

pelvic neutrality

straightness

symmetry

…but still feel blocked or crooked —

look at the foot first.

Because alignment doesn’t start at the saddle…

it starts in the stirrup.