Hello, may be your doctor is trying to tel you in lay terms about the weakness caused to your husband due to disc herniation. Discs are cushions between two vertebra( back bone) which slip out from their places due to various reasons, ( e.g like lifting heavy weights, strain) and press on the nerves which are running just behind the disc and which give strength to our legs. So, as per the MRI
its a neurological problem and not a stroke
. You should get him physically checked from a orthopedic or a neurosurgeon and let them take a call whether he can be managed by conservative methods, ( like medications, physiotherapy
) or if he needs a surgery. Take care.