Edgar Jan

Publications (2)3.08 Total impact

• Article: Sonography of the superomedial part of the spring ligament complex of the foot: a study of cadavers and asymptomatic volunteers.

  Srinivasan Harish, Edgar Jan, Karen Finlay, Brad Petrisor, Terry Popowich, Lawrence Friedman, Bruce Wainman, Erik Jurriaans
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  ABSTRACT: 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.
  Skeletal Radiology 04/2007; 36(3):221-8. · 1.54 Impact Factor
• Article: Pseudotumoral appearance of a ruptured epidermal cyst in the foot.

  Srinivasan Harish, Edgar Jan, Michelle Ghert, Salem Alowami, Karen Finlay
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  ABSTRACT: We present a case of keratin granuloma due to a ruptured epidermal cyst, occurring in the foot, in a 52-year-old woman. The patient presented with a history of a slow-growing lump in the web space of the foot that had been present for over a year. Imaging appearances suggested a soft tissue neoplasm. Clinical presentation, radiological features and histopathological findings are described, and the relevant literature is reviewed.
  Skeletal Radiology 12/2006; 35(11):867-71. · 1.54 Impact Factor