Harish Srinivasan, Jan Edgar, Finlay Karen, Petrisor Brad, Popowich Terry, Friedman Lawrence, Wainman Bruce, Jurriaans Erik
Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.
Skeletal Radiol. 2007 Mar;36(3):221-8. doi: 10.1007/s00256-006-0229-7. Epub 2006 Nov 30.
To evaluate the ability of high-resolution sonography for assessing the thickness and echogenicity of the superomedial part of the normal spring ligament in the foot in cadavers and asymptomatic volunteers.
The superomedial part of the normal spring ligament of four cadaveric feet was imaged with a high-resolution linear array transducer. Upon localization, the ligament was injected with 0.1% methylene blue with sonographic guidance. A posteromedial approach was used to dissect the feet immediately following injection to confirm accurate identification of the ligament. The bilateral ligaments in 40 asymptomatic adult volunteers were subsequently imaged.
Surgical dissection confirmed the accurate injection of methylene blue into all four cadaveric ligaments. The superomedial part of the normal spring ligament was identified bilaterally in all of the 40 asymptomatic volunteers, with a mean thickness of 3 mm in longitudinal short axes. The ligament was echogenic relative to surrounding fat, and it was thinner in women. Differences in ligament measurements with respect to age, sex, side (left vs. right) and foot dominance were not significant. The volunteers' height, weight and body mass index had a weakly positive correlation with ligament thickness.
High-resolution ultrasound can be used to identify and measure the thickness of the superomedial part of the normal spring ligament. The provided baseline measurements for the normal ligament could prove valuable when assessing the abnormal ligament.
评估高分辨率超声在尸体和无症状志愿者中评估足部正常弹簧韧带超内侧部分厚度和回声性的能力。
使用高分辨率线性阵列换能器对四只尸体足的正常弹簧韧带超内侧部分进行成像。定位后，在超声引导下向韧带注射0.1%亚甲蓝。注射后立即采用后内侧入路对足部进行解剖，以确认韧带的准确识别。随后对40名无症状成年志愿者的双侧韧带进行成像。
手术解剖证实所有四只尸体韧带均准确注射了亚甲蓝。在所有40名无症状志愿者中均双侧识别出正常弹簧韧带的超内侧部分，纵向短轴平均厚度为3mm。相对于周围脂肪，韧带呈高回声，且女性的韧带更薄。韧带测量在年龄、性别、侧别（左与右）和足优势方面的差异不显著。志愿者的身高、体重和体重指数与韧带厚度呈弱正相关。
高分辨率超声可用于识别和测量正常弹簧韧带超内侧部分的厚度。在评估异常韧带时，所提供的正常韧带基线测量值可能具有重要价值。
