Since, your father is a diabetic and also a senior citizen, he must take care while walking as fall fractures are very common in advancing age alongwith a history of long standing diabetes. You haven' t mentioned anything about his blood sugar control. How well has his diabetes been in control over the past 15 years? If his blood
glucose control has not been satisfactory, due to long standing
uncontrolled diabetes people develop complications of diabetes like
heart disease and neuropathy. as you say he has suffered from a mild
heart attack, you must
consult a cardiologist to rule out presence of
peripheral vascular disease which might be responsible for weakness in legs. If he is having neuropathy, then that can also be responsible for loss of sensation in feet leading to loss of balance while walking. Is he having the following symptoms?
1. loss of protective sensation in feet.
2. feeling of numbness/tingling/cold feet
3. Any physical changes like skin of the legs or feet, turning dark, scaly, dry, shiny with loss of hair.
If any of these symptoms are present, then it indicates development of neuropathy or
nerve damage. Also poor blood supply to the feet can lead to loss of co-ordination and balance leading to fall fractures.