A surprisingly large percentage of the population has a Leg Length Discrepancy (LLD) – I’ve seen estimates, probably conservative, that 70% of the population exhibit LLD. It’s normally not noticeable when the difference is less than 1/2 inch or so. But when it’s greater than that, the asymmetric loading on the pelvis under a squat or deadlift can be enough to cause problems that should be addressed with corrective measures. We use a shim under the foot.
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