Humerus interlocking intramedullary nail - multidimensional locking. Made of titanium alloy material, it consists of main nails (divided into left and right type), multi-dimensional lock nails and lock nails. There are a variety of screw lengths to choose from, and the main screw is available in 7.0 and 8.0mm sizes to address simple and complex fractures of the proximal humerus and humeral shaft. Unique internal screw thread design for improved stability. The bicortical screw design increases the stability of transverse and short oblique fractures. This product is favored by the majority of orthopedic surgeons.