Dorsay T A, Youngberg R A, Orr F E, Mulrean J
Department of Radiology, Madigan Army Medical Center, Tacoma, WA 98431, USA.
J Comput Assist Tomogr. 1995 Sep-Oct;19(5):800-3. doi: 10.1097/00004728-199509000-00019.
Proplast-Teflon (Vitek Inc., Houston, TX, U.S.A.) interpositional implants (PTIPIs) have been removed from the market due to complications that include severe bony destruction of both condyle and fossa as a result of exuberant foreign body giant cell reaction. As per Food and Drug Administration recommendations, the radiologist will often be called to evaluate the status of these implants in the large population that received them. We present a case of bilateral PTIPIs with nonreducing anterior displacement of the meniscal prosthesis made more apparent by cine MRI. Extensive granulomatous reaction in the temporal bone exhibited mobility with cine.
普普罗司特-特氟龙（美国得克萨斯州休斯顿市Vitek公司）植入物（PTIPIs）已退出市场，原因是出现了包括由于过度异物巨细胞反应导致髁突和关节窝严重骨质破坏等并发症。根据美国食品药品监督管理局的建议，放射科医生经常需要对大量接受过此类植入物的患者进行评估。我们报告一例双侧PTIPIs病例，通过电影磁共振成像（cine MRI）更清晰地显示出半月板假体的不可复位性前移位。颞骨广泛的肉芽肿反应在电影成像中显示出可动性。
