Suggest Treatment For Tingling Sensations And Stiffness In The Left Leg
I read your question carefully and I understand your concern.
Recovery times after spinal surgery may vary depending on the damage already done to the nerve and the spinal cord. Most patients need physical therapy and I think that would be the case here as well considering that stiffness and weakness you describe (usually a manifestation of spinal cord compression, not only nerve root).
While the healing process after the procedure takes about one month, rehabilitation times range from 3-12 months, can go even further on. In this case given that he is already able to walk there is reason to be optimistic that he will be able to resume most of his everyday activities by 3 months. He should be allowed to move more freely already by the end of the first month.
I remain at your disposal for other questions.