Hi, considering your age and previous medical history of sciatica, I would require to take a detailed case of yours to prescribe homeopathic medicine. As this sliming of leg can be due to various reasons 1) Muscular wasting Or 2) Muscular Atrophy or dystrophy. I would suggest to come and visit my clinic or if possible consult me on Practo one on one for further consultation for details of past medical history or family history and for complete general and physical examination and to suggest if any laboratory work up is required.