![]() The potential for femoral nerve stretch and avoiding hip extension should be considered when positioning a patient in lithotomy for surgical procedures. Birthing in a water pool or in a lateral position has been linked to more optimal. ![]() The legs are secured in leg supports such as the candy cane, knee. lithotomy position is linked to multiple negative maternal outcomes. Hip extension between 10 and 20 degrees consistently stretches the femoral nerve greater than 5%. The lithotomy position is a variation of the supine position in which the hips are flexed, the legs abducted, and knees flexed. There was not a significant relation between degree of extension and stretch (Pearson r, P < 0.05). For all other positions, most showed a decrease of nerve length. For extended position, all nerves showed some degree of stretch with the mean percent change in nerve length being 10.35%. We were able to assess nerve stretch using photo-editing software. The average distance for each set of images was then used to calculate the percent change from supine for each position. Lithotomy position For patients undergoing gynaecological and urological surgery, the lithotomy position is required. Distances were calculated using the ratio of pixels to millimeter specific for each image. The nerve was marked, and digital images of the nerve were obtained in the supine position and lithotomy position in both flexion and extension. ![]() In 6 cadaveric subjects, femoral nerve near the inguinal ligament was dissected in each cadaveric subject. The objective of our study was to design a method to measure nerve stretch in cadaveric subjects and then use the method to assess femoral nerve stretch in the lithotomy position with varying degrees of flexion and extension.Ī university-based, cadaveric observational study of femoral nerve stretch was conducted. ![]()
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