Yeramosu Teja, Ahmad Waleed, Solanki Sanam, Satpathy Jibanananda
Virginia Commonwealth University School of Medicine, Richmond, VA, USA.
Department of Orthopaedic Surgery, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA, USA.
Arthroplast Today. 2022 Nov 1;18:143-148. doi: 10.1016/j.artd.2022.09.011. eCollection 2022 Dec.
Modular components allow for the precise adjustment of sizing and balancing in knee replacement and are widely used in revision total knee arthroplasty. While they have a significant advantage over monoblock implants, these components may be associated with fretting and corrosion at modular junctions. We report the case of a fracture of a morse taper adapter bolt in a 65-year-old female with a history of multiple revision knee arthroplasties. Only a few cases of fracture of the taper adapter bolt have been previously reported. We reinforce 2 learning points in this report: the utility of magnetic resonance imaging as an aid in diagnosing total knee failure when initial radiographs are unremarkable and the use of techniques such as anterior quadrangular femoral osteotomy when an implant is unable to be removed via conventional techniques.
模块化组件可实现膝关节置换术中尺寸的精确调整和平衡，在翻修全膝关节置换术中广泛应用。虽然它们比整体式植入物具有显著优势，但这些组件可能在模块化连接处出现微动和腐蚀。我们报告了一例65岁有多次膝关节置换翻修史的女性患者，其莫氏锥度适配器螺栓发生骨折的病例。此前仅报道过少数几例锥度适配器螺栓骨折的病例。我们在本报告中强化了两个学习要点：当初始X线片无明显异常时，磁共振成像在诊断全膝关节失败中的辅助作用；以及当无法通过传统技术取出植入物时，使用如股四头肌前四边形截骨术等技术。
