Adductor Canal Block Ultrasound Anatomy in Volunteers

"Several reference points will be marked by anatomical landmarks and/or ultrasound: the anterior superior iliac spine; base of patella; apex of the femoral triangle A measuring tape will be used to measure the anterior superior iliac spine (landmark); the base of the patella (landmark); apex of femoral triangle (ultrasound); and distal most portion of adductor canal (Point B described earlier; ultrasound). We will then measure the ASIS to: 1) base of patella; 2) apex of femoral triangle; and 3) Point B. We will repeat the same procedure on the opposite leg. Once complete, the volunteer will be allowed to dress and leave. The procedure should take approximately 10-20 minutes for each volunteer. The following things will be recorded for each subject:~* Age~* Gender~* Weight~* Height~* BMI~* Distance of ASIS to base of patella~* Distance of Point A to base of patella~* Distance of Point B to base of patella~* Distance of apex of femoral triangle to base of patella"