Mohankumar Rakesh, Palisch Andrew, Khan Waseem, White Lawrence M, Morrison William B
1 Department of Musculoskeletal Imaging, Mount Sinai Hospital and University Health Network, Toronto, Toronto, ON, Canada.
AJR Am J Roentgenol. 2014 Nov;203(5):1040-6. doi: 10.2214/AJR.13.11821.
The purpose of this study was to characterize meniscal ossicles and their association with meniscal root tears.
A two-center retrospective assessment of 65 knee MRI studies with meniscal ossicles was performed. The relationship of the ossicle to the meniscal root and horn was assessed along with other findings of internal derangement of the knee.
Meniscal ossicles were identified in patients ranging from 23 to 80 years old. The ossicles were located within the posterior horn and root of the medial meniscus in 57 of 65 (88%) examinations. Associated meniscal tears were seen at the site or adjacent to the ossicle in all but one examination (98%). Meniscal extrusion was present in 52% (34/65) of examinations. Associated findings included articular cartilage loss, which was severe in 51% (33/65) of examinations. Anterior cruciate ligament injury or prior anterior cruciate ligament reconstruction surgery was also identified in 58% (38/65) of examinations.
Our findings show that the vast majority of meniscal ossicles are associated with posterior horn or meniscal root tears and a high incidence of focal articular cartilage loss as well as anterior cruciate ligament tears.
本研究旨在描述半月板小骨及其与半月板根部撕裂的关联。
对65例有半月板小骨的膝关节MRI研究进行了双中心回顾性评估。评估了小骨与半月板根部及角部的关系，以及膝关节内部紊乱的其他表现。
在年龄从23岁至80岁的患者中发现了半月板小骨。在65例检查中的57例（88%）中，小骨位于内侧半月板后角和根部。除1例检查外，在所有检查（98%）中，在小骨所在部位或其附近可见相关的半月板撕裂。52%（34/65）的检查存在半月板挤压。相关表现包括关节软骨损伤，在51%（33/65）的检查中损伤严重。在58%（38/65）的检查中还发现了前交叉韧带损伤或既往前交叉韧带重建手术。
我们的研究结果表明，绝大多数半月板小骨与后角或半月板根部撕裂相关，且局灶性关节软骨损伤以及前交叉韧带撕裂的发生率较高。
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