Imaging Features of Osteochondritis Dissecans

分割性骨軟骨炎之影像表現

陳良光(Liang-Kuang Chen) ； 羅偉業(Wai-Yip Law) ； 陳旭漪(Hsu-Yi Chen) ； 蘇誠道(Cheng-Tau Su)

《中華放射線醫學雜誌》 34卷3期 (2009/09) Pp. 153-159

摘要

分割性骨軟骨炎是一種發生在局部關節骨頭及其上軟骨的病變，它會造成分割性骨軟骨的分裂或甚至分離，此疾病真正的原因未明，外傷及血流供應不足都是可能的原因，分割性骨軟骨炎最常發生於膝關節，有時也會發生在腳踝和手肘。典型的症狀是青少年或青年的不明原因關節腫痛，特別是在運動過後，我們收集了本院11位經由傳統X光和磁振造影診斷的病人，其臨床症狀，素位影像，核磁影像特徵及分期比較並列表。本篇文章將討論並呈現分割性骨軟骨炎的影像學特徵以及臨床的表現。

並列摘要

Osteochondritis dissecans (OCD) is defined as a focal lesion of subarticular bone in which articular cartilage is characterized by fragmentation and possible separation in a joint. The etiology is uncertain, although trauma and ischemia have been implicated. It most commonly affects the knee joint, followed by the elbow and the ankle joints. OCD typically occurs during adolescence or early adulthood, with joint pain and swelling that worsens with activity. From January 2001 to December 2008, 11 patients with OCD were diagnosed using conventional radiographs and magnetic resonance imaging (MRI). There were seven lesions affecting the knee joint, two lesions in the elbow and two lesions in the ankle, respectively. According to MRI results, two cases were classified as stage I; two cases were classified as stage II; three cases were classified as stage III; and four cases were classified as stage IV. All lesions were confirmed by arthroscopy and pathology.