I’m also allergic to latex and had my left hip replaced 4 months ago. I don’t think I was exposed during surgery but 2 months later my right knee felt swollen and I was in excruciating pain with a swollen meniscus! I had a cortisone shot 3 weeks ago with no relief so last week I had an MRI. With muscle spasms and knee pain I was miserable. I tried some healthy suggestions. Amish muscle spasm remedy from Amazon, turmeric, E, & D and magnesium. Pain in knee is gone! Go natural it seems to work!