Determination of entry point
The nail insertion site lies on the axis of the humeral shaft. It is located at the bone-cartilage junction of the humeral head. It is not more lateral on the greater tuberosity. Therefore, a supraspinatus split is necessary.
It is slightly anterior to the center of the greater tuberosity.
Be aware, that the correct entry point depends on the type and design of nail used.
Note: For simplicity, the following illustrations are shown without sutures inserted at the margins of the supraspinatus split.