单平面透视检查早期多胫骨错位致聚乙烯断裂1例。

Q4 Medicine JBJS case connector Pub Date : 2025-01-16 eCollection Date: 2025-01-01 DOI:10.2106/JBJS.CC.24.00466

Atsushi Sugimoto, Teruya Ishibashi, Takaharu Yamazaki, Masashi Tamaki, Seiji Okada, Tetsuya Tomita

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引用次数: 0

摘要

病例：一名75岁的女性因术中胫骨平台内侧骨折而行单室关节置换术后膝关节骨坏死，行十字保留全膝关节置换术（TKA）。四年后，她经历了持续的膝盖疼痛。计算机断层扫描显示胫骨有2个平面错位。使用单平面透视进行体内运动学分析，可以看到股胫接触，表明内翻推力与胫骨部件外侧半脱位和股骨部件嵌入聚乙烯插入物。修正TKA确认聚乙烯插入物断裂。结论：不对准可能导致机械故障，体内运动学分析有助于观察TKA的异常运动学。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Detection of Multiple Tibial Malalignment-Induced Early Polyethylene Breakage Using Single Plane Fluoroscopy: A Case Report.

Case: A 75-year-old woman underwent cruciate retaining total knee arthroplasty (TKA) for osteonecrosis of the knee, converted from unicompartmental arthroplasty due to an intraoperative medial tibial plateau fracture. Four years later, she experienced persistent knee pain. Computed tomography revealed tibial malalignments in 2 planes. In vivo kinematic analysis using single-plane fluoroscopy, which can visualize the femorotibial contact, indicated varus thrust with lateral subluxation of the tibial component and the femoral component recessing into the polyethylene insert. Revision TKA affirmed the polyethylene insert breakage.

Conclusion: Malalignment might have caused mechanical failure, and in vivo kinematic analysis was useful to visualize abnormal kinematics in TKA.

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来源期刊

JBJS case connector Medicine-Medicine (all)

CiteScore

0.60

自引率

0.00%

发文量

319

期刊介绍： JBJS Case Connector helps improve patient care by providing the medical community with a journal that harnesses technology to provide information tools for discovery and reporting of unusual musculoskeletal problems, findings, treatment, and outcomes. Co-edited by Thomas W. Bauer, MD, PhD, and Ronald W. Lindsey, MD, JBJS Case Connector assists orthopaedic surgeons in the search for precedents, connections, and trends in their efforts to improve patient care. Using this unique journal, surgeons can find the commonalities between cases, benefit from the experience of their peers, and filter case information by many important variables in order to provide the best possible care for orthopaedic patients. This cross-referenced online journal includes thousands of orthopaedic case reports. It compiles symptoms, conditions, and demographic details to empower surgeons to find cases similar to theirs. Surgeons can mine the database to reveal emerging trends and identify patterns, distinguishing between truly rare cases and repeated, related single instances of a larger problem. The JBJS Case Connector Image Quiz feature provides interactive quizzes based on images from content published by JBJS and includes a discussion area for further exploration of ideas and concepts. The JBJS Image Quiz app for iPad and iPhone is available in the App Store. Contributions to JBJS Case Connector are welcomed from anywhere in the world and are considered on their merits. Articles must be written in English and should be submitted as outlined in the Instructions to Authors. All authors must abide by the JBJS ethics policies and all submissions to JBJS Case Connector are covered by the JBJS embargo policy.