A different situation, but I have used biofeedback for regaining muscle strength and movement after surgery. It did help - I all but lost the function of my VMO (one of the quadriceps) after my knee surgery, which created a lot of patella tracking problems, a lot of pain and was leading me towards more surgery. A biofeedback-trained physio taught me how to use it to control just my VMO to be able to exercise that muscle.
All the best with your appointment :)
CRPS since 1999, diagnosed in 2005 and since spread to full body, spasms, dystonia & contractures, gastroparesis, orthostatic hypotension,bradycardia/tachycardia, bone spurs, bursitis, carpal tunnel syndrome.
On Oxycontin/Endone, Topamax, Mobic, Magnesium, Florinef, Midodrine, Somac, Cipramil. Have a spinal cord stimulator, intrathecal pump with baclofen & bupivacaine and doing physio.