My mom is unable to walk on her own. What could be the reason?

Hi,

Welcome to icliniq.com. Well, difficulty to walk could be due to many conditions. Weakness of bones or fracture in her hip bones. Considering her age she can have weakness of bones due to calcium or vitamin D deficiency or due to disease like osteoporosis. This weak bones leads to whole leg weakness causing inability to walk. Another reason can be nerve weakness. It can happen due to vitamin B12 deficiency or due to nerve compression at her low back level or disc prolapse or due to problems in her spinal cord. She requires evaluation for the cause of her problem. I recommend her to get the tests done for serum calcium, serum vitamin D3, DEXA scan (dual x-ray absorptiometry) of her lumbar spine and femur and serum vitamin B12 levels.