摘要
目的 探讨外侧盘状半月板的MRI分型特征及不同类型盘状半月板撕裂的发生率。资料与方法 将 89例MRI表现典型的外侧盘状半月板分作两组 ,即未成年组和成年组 ,其中未成年组 35例 (36膝 ) ,4～ 17岁 (平均13.2岁 ) ;成年组 5 4例 (5 7膝 ) ,18～ 74岁 (平均 4 2 .0岁 )。将盘状半月板分作板型、楔型、肥角型。分析不同类型的盘状半月板合并半月板撕裂的发生率。结果 未成年组板型 2 6膝、楔型 4膝、肥角型 6膝 ;成年组板型 36膝、楔形 15膝、肥角型 6膝。两组盘状半月板类型的发生比率无显著性差异 (P >0 .10 )。无论未成年组或成年组均以板型常见。不同类型盘状半月板发生撕裂的比率有显著性差异 (P <0 .0 0 5 ) ,肥角型全部显示半月板撕裂 ,板型盘状半月板撕裂比率高于楔型。结论 无论成年组或未成年组的盘状半月板多见于外侧 ,其盘状半月板类型的分布两组间无显著差异。而不同类型的盘状半月板合并半月板撕裂的概率是有差异的 ,因此 。
Objective To discuss MRI features and types of lateral discoid meniscus of the knee joint and its incidence of laceration in different types.Materials and Methods Eighty nine patients with typical MRI manifestations of lateral discoid meniscus were divided into impuberal group (n=35, 36 knees, aged 4～17) and adult group (n=54, 57 knees, aged 18～74). The discoid meniscuses were classified as slab type, wedge type and hypertrophied horn type according to their shape. The incidence of laceration in each type was analyzed. Results In impuberal group, slab type was seen in 26, wedge type in 6 and hypertrophied horn type in 6 knees. In adult group, the slab, wedge and hypertrophied horn type was seen in 36, 15 and 6 knees, respectively. No significant difference in the incidence of each type existed between two groups (P>0.10). Slab type was most commonly seen in both groups, while a significant difference in the incidence of laceration existed between different types. All meniscuses of hypertrophied horn type showed laceration, and meniscuses of slab type had a higher laceration rate than the meniscuses of wedge type. Conclusion The discoid meniscus occurs most commonly at the lateral meniscus in both adult and impuberal group. The incidence of each type shows no significant difference between two groups. The occurrence of laceration is different in different types of discoid meniscus. MRI is of great help for the selection of therapy.
出处
《临床放射学杂志》
CSCD
北大核心
2004年第1期66-69,共4页
Journal of Clinical Radiology
