Left leg hamstring tendonopathy and arthritic knee

I’ve been cycling for seven years and was injury-free until last summer.

After a bike fit on a new Specialized Aethos (54 cm), I switched to 165 mm cranks due to limited hip internal rotation. I’m 46, and my fitter noted very tight hips.

A few months later, I developed hamstring discomfort and am now having physiotherapy. My fitter believes this is linked to poor hip mobility.

Two months ago, I also developed pain in my left knee, which has been diagnosed as osteoarthritis.

At a recent fit, it was found that my left leg is slightly longer than my right. My fitter thinks this imbalance may be causing me to compensate and contributing to my issues.

Previously, wedges were added under my cleat, but he now recommends adjusting cleat setback to reduce hamstring strain and help knee pain.

Any advice on whether the fit changes sound correct and any ideas on whether the hip stiffness could be the real issue?

Thanks

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