踝关节泪滴征(Teardrop Sign):踝关节积在侧位平片上的x线征象,正常踝关节关节囊前壁和后壁表现出脂肪样密度,当踝关节积液时,关节囊肿胀,并表现出液体样密度,呈泪滴样改变。 Causes
Carke等报道:外伤病人踝关节肿胀>=13mm(d1+d2)预示骨折的阳性率为82%;进行进一步影像学检查的合理阈值。 Carke et al (2) reported that 'An ankle effusion of 13 mm (d1 + d2) or greater in total capsular distension has a positive predictive value of 82% for occult fracture and is a reasonable threshold to prompt additional imaging.' |
|