Beneficial effect of a zirconium-nitride-coated implant in total knee arthroplasty revision for suspected metal hypersensitivity

• Published in: Orthopaedics & traumatology, surgery & research surgery & research, 2022-09, Vol.108 (5), p.103320-103320, Article 103320
• Main Authors: Bulaïd, Yassine, Djebara, Az-Eddine, Belhaouane, Ramy, Havet, Eric, Dehl, Massinissa, Mertl, Patrice
• Format: Article
• Language: English
• Subjects: Human health and pathology; Life Sciences; Metal hypersensitivity; Multilayer; Revision; TKA; Total knee arthroplasty
• ISSN: 1877-0568; 1877-0568
• DOI: 10.1016/j.otsr.2022.103320

Revision of total knee arthroplasty (rTKA) for suspicion of metal hypersensitivity (MHS) may require hypoallergenic implants. Results for coated implants have not been reported. The aim of the present study was to assess short-term results and survival of rTKA for MHS using a multilayer implant coating. Multilayer implant coating improves functional results in rTKA, with survival comparable to primary coated implants. A single-center retrospective observational study included 28 patients (30 knees) undergoing rTKA for MHS using a coated implant between May 2011 and November 2016. Exclusion criteria comprised implant malpositioning and history of infection in the affected knee. Clinical and radiological results were assessed on the International Knee Society (IKS) and SF-36 functional scores and Ewald radiological score. Survival was calculated on Kaplan-Meier estimation. Mean follow-up was 3.8 years. Mean IKS score increased by 40.2 points (40%) [range, 28.1–52.3] (p