Hi, I did an online search and found this article for you. (To find this article, put the title into a search engine, click on the PubMed link result and read the free full text.):

Zondervan, R.L., Vaux, J.J., Blackmer, M.J. et al. Improved outcomes in patients with positive metal sensitivity following revision total knee arthroplasty. J Orthop Surg Res 14, 182 (2019).
The purpose of this study was to determine whether patients presenting with a painful total knee arthroplasty with a positive metal sensitivity have improved outcomes following revision to a hypoallergenic implant. The good news is that following a revision procedure to a hypoallergenic implant, these patients had improved pain scores, walking function, and range of motion.

As best as I could find, the authors of this study now have these medical affiliations:
- Jonathan J. Vaux, Joint Preservation and Reconstruction Clinic at St Alphonsus Medical Center in Boise, Idaho. Phone: 208-302-3500
- Michael J. Blackmer, Hip, Knee and Shoulder Joint Replacement Specialist in Foley, Alabama. Phone: 251-476-5050
- Brett G. Brazier, Orthopedic Surgery Specialist at CHRISTUS Santa Rosa Hospital in Santa Rosa, California. Phone: 877-465-1856
- Charles J. Taunt Jr, Michigan Orthopedic Center in Lansing, Michigan. Phone: 517-267-0200

I hope this information is helpful and wish you all the best with getting successful treatment.