Tendon Transfer for CMT Foot Drop: Recovery

I'm not a doctor. This guide shares my own experience of a 10-hour CMT foot reconstruction, backed by research I've referenced throughout. Always check with your surgical team before changing your diet, supplements or medication.

Why CMT weakens some muscles faster than others

CMT doesn't damage all nerves equally. The muscles that pull the foot up and out (the peroneal group) tend to fail earlier than the muscles that pull it down and in. That imbalance is what drives the cavovarus deformity and foot drop.

How a tendon transfer rebalances the foot

A tendon transfer takes a working tendon, detaches it from its normal insertion, and re-attaches it to a new position so it performs the job of a paralysed muscle. The goal is to rebalance the forces across the foot rather than simply add strength.

Common transfers: peroneus longus to brevis, tibialis posterior

• Peroneus longus to brevis: reroutes the longus to stop it pulling the foot into inversion and help it everse instead.
• Tibialis posterior transfer: moves the tibialis posterior to the top of the foot to help lift it, addressing foot drop.

Can it fix foot drop? Realistic expectations

A transfer can improve foot drop meaningfully, but it rarely restores normal strength. Think of it as rebalancing and assisting, not a full cure. Some people still benefit from an AFO afterwards.

Protecting the transfer: the first 6 to 12 weeks

The re-routed tendon needs time to heal into its new attachment. For the first 6 to 12 weeks it's protected in a cast or boot with strict limits on movement and weight bearing. Too much load too early can pull the tendon free. My week 8 update covers the transition out of the cast.

Retraining the brain: physio for transferred tendons

The hardest part is neurological. Your brain has to learn to fire a muscle for a new purpose. Physiotherapy uses biofeedback and repeated movement patterns to retrain that pathway. It's slow, deliberate work and it's the part that decides the long-term result.

Will I still need an AFO?

Possibly. Some patients no longer need an AFO after a successful transfer; others use one for longer walks or when fatigued. Your physiotherapist will assess this as your strength returns.

FAQs

How long does a transferred tendon take to heal?

Roughly 6 to 12 weeks to bond to its new attachment, then several months of retraining before it works effectively.

Will I feel the tendon working differently?

Yes, at first. You have to consciously think about the movement until the new pattern becomes automatic, which can take months.

References

• Tendon transfers for foot drop (NCBI)
• CMT foot drop and tendon transfer (CMT UK)
• Tendon transfer rehabilitation principles (BOFAS)