Fracture stability
femoral neck fractures, pertrochanteric fractures, fracture, Fracture, fractures, non-union
In the treatment of pertrochanteric fractures a stable internal fixation accomplished with dynamic compression of the fracture sites is important to achieve stability and healing. Van Embden et al. described a mean shortening of 7.1 mm (range 4.6–10.7) after 6 weeks in 4 pertrochanteric fractures treated with a SHS [The biomechanical aspects of rotational stability have been debated for several years in patients with pertrochanteric fractures [Fracture reposition to anatomical position is attempted during surgery but can be difficult. Ragnarsson et al. studied RSA measured migration of displaced femoral neck fractures and found that intermediate fragments increased fracture instability due to poor bony contact, and that ad latum displacement of more or equal to 1 mm on either AP or LAT radiographic projection increased the risk for non-union [