Welcome to HCM,
As you have got problem in your spinal vertebrae, do not go for any exercise or using any trainer without advise of orthopedic surgeon as it might give more damage to your vertebral
At this age there are all chances to have osteoporosis
in your skelaten system.
So go for branded high dose of Calcium, vitamin D and A.
Go for slow walking, swimming and Quadriceps exercise.
Take more milk.
Ok and bye.