الفهرس 
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Abstract
Trochanteric fractures account for nearly 50% of all fractures of proximal femur. They are more common in old age. Elderly osteoprotic women are at high risk.
The ratio between women to men ranges from 2:1, likely because of postmenopausal metabolic bone changes.
The dynamic hip screw (DHS) was used for fixation of trochanteric fractures and it was the gold standard of fixation for years. But , its use in unstable trochanteric fractures is associated with medial displacement of the shaft resulting from sliding of screw within the barrel and this lead to higher incidence of screw cut-out especially in osteoprotic patients.
Intact lateral wall plays a key role in stabilization of unstable trochanteric fractures by providing a lateral buttress for proximal fragment, and its deficiency leads to excessive collapse and varus malpositioning .