Metal-on-Metal Testing to Salvage a Device Disaster: Commentary on an article by Gulraj S. Matharu, BSc(Hons), MBChB, MRCS, MRes, et al.: "The Effectiveness of Blood Metal Ions in Identifying Patients with Unilateral Birmingham Hip Resurfacing and Corail-Pinnacle Metal-on-Metal Hip Implants at Risk of Adverse Reactions to Metal Debris".