Department of Advanced Biomedical Sciences, Università degli Studi Federico II, Naples, Italy.
Unit of Diagnostic and Interventional Radiology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Milano, Italy.
J Biol Regul Homeost Agents. 2018 Nov-Dec;32(6 Suppl. 1):77-81.
Hoffa's fat pad (HFP) is part of the knee structure interposed between the joint capsule and the synovium. Recent studies have classified infrapatellar fat pad (IFP) disorders on a pathogenesis-based classification: traumatic disorders, post-traumatic disorders, lesions secondary to adjacent disorders. Masses or pseudo-masses may also be found within the IFP, however these alterations are much less frequent. Diagnostic imaging plays an important role in the diagnosis of masses and pseudo-masses of IFP and the first choice exam is a dynamic ultrasound study. We presented a rare case of Hoffa's fat pad herniation through the joint capsule, in a young child without history of knee injuries that has never been described before in the literature.
Hoffa 脂肪垫（HFP）是膝关节结构的一部分，位于关节囊和滑膜之间。最近的研究根据发病机制对髌下脂肪垫（IFP）疾病进行了分类：创伤性疾病、创伤后疾病、邻近疾病的继发病变。IFP 内也可能发现肿块或假性肿块，但这些改变要少见得多。影像学诊断在 IFP 肿块和假性肿块的诊断中起着重要作用，首选的检查是动态超声检查。我们报告了一例罕见的 Hoffa 脂肪垫通过关节囊疝出的病例，发生于一名无膝关节损伤史的幼儿，文献中从未描述过这种情况。
