Minimally invasive components separation (MICS) is believed to decrease wound complications by reducing local tissue damage and eliminating the interruption of blood supply to the overlying skin and soft tissue. One drawback to the MICS technique is the difficulty with identifying the correct location for entry into the anterior abdominal wall. We believe that ultrasound can be used to visually assist identification of the correct surgical entry site (the avascular space between the external and internal abdominal oblique muscles, lateral to the linea semilunaris).
The purpose of this study was to assess if novices can readily learn an ultrasound technique for identifying abdominal wall myofascial components via a video education tool.
This research was an institutional review board-approved, prospective, observational study. Ten surgical residents were asked to watch a 1-min training video containing basic instructions on ultrasound technique for identifying the myofascial anatomy of the anterior abdominal wall. After watching the educational video, the subjects were asked to identify the linea semilunaris first by external anatomy, then by ultrasound. A grader, blinded to the identification of the subject, recorded if the subject correctly identified the location of the linea semilunaris by each method (external anatomy only versus ultrasound guided).
Ten subjects were evaluated. Nine of ten (90 %) subjects correctly identified the linea semilunaris with ultrasound. Only three of ten (30 %) subjects correctly identified the linea semilunaris by physical exam.
Ultrasound technology can aid in identification of the abdominal wall musculofascial units in MICS and be easily taught via short video instruction to novices with excellent results. Further studies will be necessary to prove that ultrasound use can decrease complications associated with entry into the appropriate avascular space between the external and internal abdominal oblique muscles, lateral to the linea semilunaris.
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Drs. Sucher, Lyons, Salas, Sherman, and Dunkin have no conflicts of interest or financial ties to disclose.
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Sucher, J.F., Lyons, C., Salas, N. et al. Evaluation of Ultrasound for Identification of Abdominal Wall Myofascial Components by Novice Learners. Surg Endosc 27, 1953–1956 (2013). https://doi.org/10.1007/s00464-012-2693-6
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