Severe L3,4,5 Compression after TKR

I had a LTKR Jan 12, 2023. Approximately 2-3 months in I started having some very weird feelings running through my leg. An MRI ordered by my surgeons office disclosed severe stenosis of L3-S1 vertebrae with my L5 almost 90% compressed. Never having back issues in 75 years I was surprised to say the least. I finally had an appt with a spine specialist who is recommending a laminectomy to relieve pressure as the symptoms have gradually worsened over the past few months. I have a pre op appt August 2nd with surgery scheduled for Aug 14th. Looking forward to decompression. This has affected my knee decovery. Will post again after pre op appt.