Comparison Of Fault Anatomy Of Sinus Tarsi With Imagings

ObjectiveTo observe details of sinus tarsi external aperture,relations and course character of cervical ligament, and measure the volume of sinus tarsi. Describe the appearance of simus tarsi and adjacent relations compare with MRI imagings in natural positions; discuss the best deck on MRI to display cervical ligament.Materials and methodsDiscover a case of sinus tarsi which was in natural positions and observe the external aperture of the sinus tarsi and MPR imagings cervical ligament with contrast to identify the start of it and the best display deck, and measured the volume of 18 cases of sinus tarsi after the CT scanning. MRI imagings were used on 18 bodies and were made different specimens(anteroposterior axes 5 cases,coronal 5 cases,abcissa axis 4 cases,siope coronal 4 cases) . Described the appearance of simus tarsi and adjacent relations compare with MRI imagings in natural positions, and MRI FSE GE STIR sequences of 40 cases health adults'sinus tarsis. Measured the length, width, thickness of the cervical ligament and the angle of coronal,sagittal with horizontal plane.Results(1) Sinus tarsi external aperture located under external malleolus, tilt quad, and surrounded by muscle,anadesma,blood vessel,nerves and fatty tissues。(2)The best display deck of cervical liagment on CT MPR rebulid imagings was oblique coronal with anterior tilt 40°~50°,the volume of sinus tarsi was 4.7965±0.56ml。(3)Fault specimen of sinus tarsi were coincident with MRI imagings on morphology, p>0.05. (4)The length,width,thickness of health adults'cervical ligament was 20.04±2.15mm,5.15±2.17mm,2.07±0.75mm,angle of sagittal with horizontal plane was 47.55±3.52°,angle of coronal plane with horizontal plane was 35.14±2.25°.Cervical ligament showed uneven hypo-signal and could be well disclosed on many deck, p<0.05. ConclusionPart tissue eltment of sinus tarsi were numerous and complicated on anatomic structure ,3D reconstructions could disclose shapes of sinus tarsi directly, we could describe siuns tarsi and the anntomic structure well by compare fault dissection with MRI imagings on anteroposterion axes coronal position axial view and oblique coronal positison. The best imaging on MRI to display cervical ligament was oblique coronal positison.