Hello,
Sorry to hear about the condition of you mother.
It would had been good if you would have mentioned the type of surgery done.
However here are some exercise that will help her in reducing the swelling and pain.
1)liedown on the back with knees bend and press the back on the bed with the help of stomach muscles and hold for 10 seconds and release.
2)While on you back lift the leg up without bending at knee slightly above the bed(30 degrees)and take it down
3)while in above position (leg up)rotate the foot outwards,bend the knee and turn the whole leg inward (toward the other leg) and straighten the leg
4)while standing place one foot on a stool(2 feet height, suppose it's the right foot)extend backwards and bend toward the left side and come back to starting position.
5)while sitting do ankle toe movements (1000 times throughout the day I.e40 times every hour in 12 hours approximately)
6)In sitting extend the knee and take it back to normal
7)Apart from this activities like walking,jogging,
yoga (avoid back bending positions) will help in recovery.
These are only some of the exercise,each needs to be done 2 times daily with 10 repetations each time.All need to be done alternatively on both legs.
For further help or suggestions you can contact up
You can also refer to a physiotherapist in your locality for further treatment.
Hope this helps you and your mother gets well soon
thank you