Koutserimpas Christos, Karaiskos Ilias, Piagkou Maria
Department of Orthopaedics and Traumatology, "251" Hellenic Air Force General Hospital, Athens, GRC.
Anatomy/Oral Surgery, National and Kapodistrian University of Athens, Athens, GRC.
Cureus. 2023 Dec 20;15(12):e50824. doi: 10.7759/cureus.50824. eCollection 2023 Dec.
New-generation threaded acetabulum components have been used in total hip arthroplasty (THA) with good outcomes. We have extensively used the EcoFit® SC cup (Implantcast, Buxtehude, Germany) in our practice. In this report, we present some major complications related to the use of this implant, as well as insights regarding the surgical technique to avoid such adverse effects. Furthermore, we attempt to describe certain contraindications for using threaded cups in THA, taking into account specific patient anatomy and intraoperative acetabulum preparation. We have observed acetabulum roof and posterior wall fractures, as well as incomplete placement of the component. Ensuring the meticulous preparation of the peripheral rim of the acetabulum is crucial to prevent incomplete placement since threaded components have a larger diameter than that of the reamers used to prepare the acetabulum. Additionally, when dealing with the acetabula where the posterior or anterior walls have thinned, it is advisable to refrain from using a threaded cup to avoid the risk of intraoperative fractures caused by the torque forces exerted during implant insertion.
新一代带螺纹髋臼组件已应用于全髋关节置换术（THA），效果良好。我们在临床实践中广泛使用了EcoFit® SC髋臼杯（德国布克斯泰胡德的Implantcast公司生产）。在本报告中，我们介绍了与使用该植入物相关的一些主要并发症，以及关于避免此类不良反应的手术技术见解。此外，考虑到特定患者的解剖结构和术中髋臼准备情况，我们试图描述在THA中使用带螺纹髋臼杯的某些禁忌症。我们观察到髋臼顶和后壁骨折以及组件放置不完全的情况。由于带螺纹组件的直径大于用于准备髋臼的扩孔钻，因此确保髋臼周边边缘的细致准备对于防止放置不完全至关重要。此外，当处理后壁或前壁变薄的髋臼时，建议避免使用带螺纹髋臼杯，以避免在植入过程中因扭矩力导致术中骨折的风险。
