The definitions of torsional malalignment may vary. In thestudy of Jeanmart et al., 15 or greater degrees of difference from thenormal side was considered significant [19]. This value was used inthis study: torsional malalignment with a 15-degree or greatertorsion difference was observed in 25.7% of the subjects. Thisincidence rate is lower than the 40% reported in the study ofRamanoudjame et al., but is similar to the 20–30% in usual femoraldiaphysis fractures. An anteversion was observed in 68% oftorsional malalignment cases and the majority cases were unstablefractures. This may be due to the excessive internal rotation of legto reduct in unstable fracture. In typical stable trochantericfracture cases, the fracture gap is anteriorly open in the axial viewdue to the muscle power of gluteus medius and short externalrotators. So fracture gap can be easily closed through the internalrotation of the distal fragment because the posterior cortex plays arole as a intact hinge. However, in unstable trochanteric fracturecases such as intersubtrochanteric fracture, four-part fracture