期刊
KOREAN JOURNAL OF RADIOLOGY
卷 23, 期 6, 页码 674-687出版社
KOREAN SOCIETY OF RADIOLOGY
DOI: 10.3348/kjr.2021.0577
关键词
Patellofemoral instability; Children; MRI
Patellofemoral instability (PFI) is a common issue in pediatric knee injuries, resulting from an imbalance in the dynamic relationship between the patella and the femoral trochlear groove. Various factors, such as anatomical variants and altered biomechanics, contribute to PFI. Treatment aims to restore normal patellofemoral dynamics and prevent persistent PFI.
Patellofemoral instability (PFI) is common in pediatric knee injuries. PFI results from loss of balance in the dynamic relationship of the patella in the femoral trochlear groove. Patellar lateral dislocation, which is at the extreme of the PFI, results from medial stabilizer injury and leads to the patella hitting the lateral femoral condyle. Multiple contributing factors to PFI have been described, including anatomical variants and altered biomechanics. Femoral condyle dysplasia is a major risk factor for PFI. Medial stabilizer injury contributes to PFI by creating an imbalance in dynamic vectors of the patella. Increased Q angle, femoral anteversion, and lateral insertion of the patellar tendon are additional contributing factors that affect dynamic vectors on the patella. An imbalance in the dynamics results in patellofemoral malalignment, which can be recognized by the presence of patella alta, patellar lateral tilt, and lateral subluxation. Dynamic cross-sectional images are useful for in vivo tracking of the patella in patients with PFI. Therapeutic approaches aim to restore normal patellofemoral dynamics and prevent persistent PFI. In this article, the imaging findings of PFI, including risk factors and characteristic findings of acute lateral patellar dislocation, are reviewed. Non-surgical and surgical approaches to PFI in pediatric patients are discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据