Implant Failure After Motec Wrist Joint Prosthesis Due  to Failure of Ball and Socket-Type Articulation—Two Patients With Adverse Reaction to Metal Debris and Polyether Ether Ketone

We describe 2 cases of articulation-related failures resulting in revision surgery after a Motec total wrist arthroplasty: one with an adverse reaction to metal debris and the other with an adverse reaction to polyether ether ketone. In the first patient, blood cobalt and chrome levels were elevated and magnetic resonance imaging showed clear signs of a pseudotumor. The other patient had an extensive release of polyether ether ketone particles into the surrounding synovia due to adverse wear conditions in the cup, leading to the formation of a fluid-filled cyst sac with a black lining and diffuse lymphocyte-dominated inflammation in the synovia.

Source: The Journal of Hand Surgery - April 21, 2018 Category: Surgery Authors: Teemu Karjalainen, Konsta Pamilo, Aleksi Reito Tags: Case repository Source Type: research