I regret not getting clearer pictures to zoom in and see the words on the instruments but I felt the need to be discreet as I was just walking by, these ocean-front home garages are rarely/NEVER left open unattended. What is this mystery chamber?
One more different angle picture in the comments, you can see the seating bench in the chamber.
My wife had to have her knee replaced a year ago, and she's only in her 30s. The recovery was slow, and she complains about the range of motion she lost, but it's a lot more stable than her old knee at least.
But her case was also one-of-a-kind complicated, because she has a rare genetic condition where her kneecaps basically never worked in the first place. In any case, she got through it.
Anyway, I hope everything goes well for your wife.