关节镜术后膝关节：基础影像学概念与新兴技术
简介
该综述聚焦关节镜术后膝关节的MRI评估，系统阐述了ACL重建、半月板修复及软骨修复术后的正常影像演变与并发症鉴别要点。通过整合手术背景与时间依赖性MRI表现，为临床医生区分术后预期改变与失败征象提供了实用框架。
英文摘要
MRI is central to evaluation of the post-operative knee, providing a comprehensive assessment of reconstructions, repairs, and cartilage restoration procedures. Accurate interpretation requires familiarity with operative techniques, graft biology, and the expected temporal evolution of post-operative imaging findings. This review presents a practical, imaging-based approach to contemporary knee surgery. Emphasis is placed on anterior cruciate ligament reconstruction, the renewed interest in primary repair, and common mechanisms of failure. Meniscal surgery, including repair, root repair, centralization, and transplantation, is discussed with attention to expected post-operative MRI appearances and findings suggestive of recurrent or failed repair. Finally, cartilage resurfacing and restoration techniques are reviewed using a systematic framework to assess graft infill, integration, surface congruity, and subchondral bone response. By integrating surgical context with time-dependent MRI findings, this review aims to provide radiologists with a practical framework to distinguish expected post-operative changes from complications, improving diagnostic confidence and clinical relevance of post-operative knee MRI interpretation.