+ Count the number of septocutaneous perforators MX1, MX2, MX3, MX4... + Distance from the deltoid muscle attachment point to the septocutaneous perforators MX1, MX2, MX3, MX4... + Distance from humerus lateral epicondylitis to MX1, MX2, MX3, MX4... 8 + Measure the flattended diameter of the artery, veins of the pedicle at the origin.