The most common reason for not being able to stand up with strength in the thighs is potassium deficiency or related to improper activities, calcium deficiency, compression symptoms of lumbar spine problems, myotonic dystrophy, and muscle atrophy. You should go to the hospital and have the relevant tests done to determine the cause before you can treat the cause. If it is caused by potassium deficiency, it can be treated with potassium chloride infusion as prescribed by the doctor, or take potassium orally, eat more potassium-rich foods such as oranges and oranges, and pay attention to the meat and vegetables in the diet, if you take diuretics, take potassium-protecting diuretics, if it is related to calcium deficiency, take appropriate calcium supplements, and if it is caused by trauma, you should do causal treatment.