Feasibility of Magnetic Resonance Imaging Monitoring of Postoperative Total Knee Arthroplasty without Metal Artifacts: A Preliminary Study of a Novel Implant Model

Figure 3

Postoperative magnetic resonance imaging illustrating the prosthesis with a low signal intensity without artifacts and marrow and soft tissue with a continuous signal intensity without artifact interruption. The hyperintense signal around the cement on the T2-weighted magnetic resonance imaging scans may represent water and proteins adsorbed on the cement surface or soft tissue edema and inflammation in the early stage of healing (the yellow triangles indicate the hyperintense signals around the cement). The fine metal wires inserted into the polyetheretherketone (PEEK) and highly cross-linked polyethylene (HXLPE) components do not produce obvious metal artifacts.