Lima Fernando M, Debieux Pedro, Aihara André Y, Cardoso Fabiano N, Franciozi Carlos Eduardo, Grimberg Alexandre, Fernandes Artur R C
Department of Diagnostic Radiology, Universidade Federal de São Paulo (UNIFESP-EPM), São Paulo, Brazil; Laboratório Delboni Auriemo, DASA, Brazil.
Department of Orthopedics and Traumatology, Universidade Federal de São Paulo (UNIFESP-EPM), São Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, Brazil; Hospital Beneficiência Portuguesa de São Paulo, São Paulo, Brazil.
Knee. 2020 Jun;27(3):747-754. doi: 10.1016/j.knee.2020.04.020. Epub 2020 May 29.
Anterior cruciate ligament (ACL) repair is increasing in frequency in younger children. Recognition of the normal development of the intercondylar notch is important for successful ACL graft placement, allowing surgeons to better understand the anatomy and risk factors related to ACL tears and its reconstruction. The purpose of this study was to compile normative data on the intercondylar notch in the pediatric population with magnetic resonance imaging (MRI), emphasizing the differences between males and females.
In this retrospective study, musculoskeletal radiologists evaluated intercondylar notch width, bicondylar distance and notch width index (NWI). A total of 253 MRI examinations (130 males and 123 females between six and 18 years of age) were included. The association between measurements, sex and age was considered. Linear and fractional polynomial regression models were used to evaluate the relationships between measurements.
Intercondylar notch width increased up to 10 years of age in females and 11 years of age in males, with relative stabilization up to 13 years in girls and 14 years in boys and a slight reduction in values at subsequent ages. Bicondylar distance showed significant progressive growth with age in both sexes. NWI showed a discrete and homogenous reduction with age in both sexes.
Intercondylar notch width interrupts its growth around 10-11 years of age, with relative stabilization up to 13-14 years and a slight reduction in dimensions in subsequent ages. This growth pattern resembles the development of the ACL area observed in recent studies.
前交叉韧带（ACL）修复术在年幼儿童中的实施频率正在增加。认识髁间切迹的正常发育对于成功进行ACL移植物植入很重要，这能让外科医生更好地了解与ACL撕裂及其重建相关的解剖结构和风险因素。本研究的目的是利用磁共振成像（MRI）汇编儿科人群髁间切迹的规范数据，重点强调男性和女性之间的差异。
在这项回顾性研究中，肌肉骨骼放射科医生评估了髁间切迹宽度、双髁间距和切迹宽度指数（NWI）。共纳入253例MRI检查（年龄在6至18岁之间的130名男性和123名女性）。考虑了测量值、性别和年龄之间的关联。使用线性和分数多项式回归模型来评估测量值之间的关系。
女性髁间切迹宽度在10岁时达到最大值，男性在11岁时达到最大值，女孩在13岁前、男孩在14岁前相对稳定，随后年龄时数值略有下降。双髁间距在两性中均随年龄显著增长。NWI在两性中均随年龄呈离散且均匀的下降。
髁间切迹宽度在10 - 11岁左右停止生长，在13 - 14岁前相对稳定，随后尺寸略有减小。这种生长模式类似于近期研究中观察到的ACL区域的发育情况。
