<s>[INST] my polio effected leg was operated at my age of 6 years, in result there is a difference of 1/2 in length betwwen two leg. that s why there is a limbing in my walking. My question is that which kind of trouble may I face in my future ? can it be paralised in my old age ? Now I am 42 years old. [/INST] helloLimb length discrepancy shortening is generally compensated with wearing raise shoe on shortened side to maintain gait and avoid limp. Also polio orthotic bracing  or caliper is worn on affected eg.I would suggest you to see orthopedic surgeon and a limb rehabilitation expert for the same.Usually the polio is self limiting, while regular exercises are done to maintain tone of muscles. the power lossin childhood remains stationary and damage of nerves already done doesnt  increase with age, so no chance for paralysis further, continue massage and physiotherapy exercise and wear polio brace and raised shoebest wishes </s>