Jasinkiewicz Noah,  Newman Christopher

Final Pr. ID: Poster #: EDU-063

Cruciate ligament developmental variations are frequently encountered in pediatric musculoskeletal imaging. Some of these variations represent normal anatomic variants, whereas others result from pathological development and can result in pain and instability and may be associated with other abnormalities. The purpose of this educational poster is to review developmental variations in cruciate ligament anatomy that result in normal variants as well as congenital disease.

The normal prenatal and postnatal development of the cruciate ligaments is reviewed along with the associated stabilizing structures of the joint capsule. Several examples of normal anatomical variants are reviewed and demonstrated (e.g., triple bundle anterior cruciate ligament, variations in origin and insertion). Examples of the most common congenital anomalies are also presented (e.g., isolated absence, combined absence of both cruciate ligaments, hypoplasia, dysplasia of the intercondylar eminence) along with several associated developmental syndromes (e.g., nail-patella syndrome, tibial and fibular hemimelia, congenital knee dislocation). Several critical differential diagnoses (e.g., bucket handle meniscus tears) will be discussed given their impact on patient management.

A systematic approach is provided to help differentiate the various causes of abnormal cruciate ligament development using multimodality imaging. When available, longitudinal imaging, physical examination, and arthroscopic correlations are provided for clinical correlation. Possible complications are discussed to provide additional insight into patient care. Guidelines for reporting are provided to support patient care alongside referring providers. After viewing this module, readers will be able to better understand and differentiate cruciate ligament variants and congenital anomalies and better evaluate their impact on the patients for whom they care. Read More

Authors:  Jasinkiewicz Noah , Newman Christopher

Keywords:  Knee, Knee MRI, Congenital

Nguyen Jie,  Bram Joshua,  Ganley Theodore,  Lawrence John,  Patel Maya,  Ho-fung Victor

Final Pr. ID: Paper #: 051

Mensicocapsular injury (ramp lesion) occurs in 9-17% of ACL tears. These injuries are a risk factor for instability and failure following ACL reconstruction. The far peripheral location has contributed to under-diagnosis during routine anterior-approach arthroscopy. While there has been increasing interest in the identification and treatment of these lesions in adults, there is a paucity of published data on children and the proposed MRI features lack specificity. Therefore, the purpose of this study was to investigate the performance of MRI criteria for identifying ramp lesions in children. Read More

Authors:  Nguyen Jie , Bram Joshua , Ganley Theodore , Lawrence John , Patel Maya , Ho-fung Victor

Keywords:  Knee, MRI, ramp

Nadim Bardia,  Samet Jonathan

Final Pr. ID: Poster #: SCI-027

The prevalence, imaging features, and etiologies of pediatric intra-articular soft tissue masses are not well described in the literature. Therefore, intra-articular masses can present diagnostic dilemmas for pediatric radiologists. The purpose of this study was to further evaluate pediatric intra-articular soft tissue masses. Our hypothesis was that intra-articular masses have a limited differential diagnosis and are mostly benign. Read More

Authors:  Nadim Bardia , Samet Jonathan

Keywords:  intra-articular mass, PVNS, knee MRI

Oneill Sean,  Carl Rebecca,  Labella Cynthia,  Samet Jonathan

Final Pr. ID: Poster #: SCI-062

Depending on the age of the patient, knee MRI may be a daunting exam. Physicians may have a higher threshold to order MRI in the pediatric setting compared to the adult setting. Few if any studies are available which attempt to predict the prevalence of MRI findings based on the patient’s presenting history in the sports medicine setting. Our objective was to determine the prevalence of knee pathology using MRI in two groups of pediatric patients: those with an acute event, and those with knee pain without history of acute event. Read More

Authors:  Oneill Sean , Carl Rebecca , Labella Cynthia , Samet Jonathan

Keywords:  knee MRI, knee pain, patellofemoral instability, sports medicine