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目的：研究跖板在MRI和超声中形态学特征，以提高对跖板临床诊断价值的认识与水平。方法采用新鲜足标本19足（76例跖板)以MRI及超声扫描，观察跖板的形态并测量跖板长、宽、中间及旁侧厚度。结果 MRI显示中，跖板在质子密度（PD）像显示最为清晰，表现为光滑圆弧结构。超声在动态及灵活性更具优势，呈现等回声带。足第2~5跖板影像学各项数值中，MRI测量长度依次为（18.36±1.30）、（17.88±0.89）、（16.67±1.22）、（14.26±1.11）mm；宽度为（10.98±0.71）、（10.10±2.21）、（10.07±0.52）、（9.07±0.65）mm；旁侧厚度为（2.07±0.13）、（2.05±0.12）、（1.87±0.22）、（1.79±0.24）mm；中间厚度为（1.34±0.16）、（1.32±0.14）、（1.13±0.14）、（1.05±0.13）mm。超声测量长度依次为（17.24±1.25）、（16.98±1.12）、（15.77±1.80）、（12.18±1.38）mm；宽度为（12.19±0.74）、（11.63±0.79）、（11.08±0.77）、（10.44±0.86） mm；旁侧厚度为（1.83±0.17）、（1.76±0.21）、（1.61±0.27）、（1.48±0.21）mm；中间厚度为（1.14±0.14）、（1.06±0.15）、（1.04±0.15）、（0.94±0.12）mm。MRI的各项测量指标结果与超声扫描对比显示两者存在差异,参数差异比较有统计学意义（P<0.05）。结论 MRI与超声都可清晰地显示跖板，对跖板损伤的诊断有重要意义。“,”Objective To study and measure morphological feature of less plantar plates by MRI and ultrasound, and improve the understanding of its value on clinical diagnosis. Methods Nineteen fresh-frozen human cadaveric foot specimens (seventy-six less plantar plates) were scaned by MRI and ultrasound. The imaging morphology of less plantar plates was observed;the length, width, central thickness and lateral thickness of less plantar plate were measured. Results The planter plate was showed distinctly with Proton density and was smooth and curvilinear in MRI images. In addition, the planter plate was scanned dynamically and flexibly in ultrasound, showing slightly echoic band. The length of the less plantar plates in MRI was (18.36±1.30) mm,(17.88±0.89) mm, (16.67±1.22) mm,and (14.26±1.11) mm;The width in MRI was (10.98± 0.71) mm,(10.10±2.21) mm,(10.07±0.52) mm,and (9.07±0.65) mm;The lateral thickness in MRI was (2.07± 0.13) mm,(2.05±0.12) mm,(1.87±0.22) mm,and (1.79±0.24) mm;The central thickness in MRI was (1.34± 0.16) mm,(1.32 ± 0.14) mm,(1.13 ± 0.14) mm, and (1.05 ± 0.13) mm. The less plantar plates of length in ultrasound was (17.05 ± 1.31) mm, (16.98 ± 1.12) mm, (15.77 ± 1.80) mm,and (12.18 ± 1.38) mm;The width in ultrasound was (12.19 ± 0.74) mm,(11.63 ± 0.79) mm, (11.08 ± 0.77) mm,and (10.44 ± 0.86) mm;The lateral thickness in MRI was (1.83 ± 0.17) mm, (1.76 ± 0.21) mm, (1.61 ± 0.27) mm, and (1.48 ± 0.21) mm;The central thickness in MRI was (1.14 ± 0.14) mm,(1.06 ± 0.15) mm, (1.04 ± 0.15) mm, and (0.94 ± 0.12) mm. The measuring results of less plantar plates in MRI and ultrasound were different and the parameter differences were statistically significant (P<0.05). Conclusions Both MRI and ultrasound can show the planter plates distinctly and they play an important role for examination of plantar plates.