الفهرس 
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Abstract
Hip fractures present a common source of morbidity and mortality among elderly people worldwide. Globally, the mean age of the population is increasing, and the number of hip fractures is expected to triple in the next 50 years...
Patients may experience significant functional loss as well as long-term mortality even 10 years after trochanteric fractures.
The aim of this study was to evaluate the clinical and radiological outcome after the use of the primary calcar-replacing hip hemi-arthroplasty in treatment of surgically unstable trochanteric fractures.
This prospective study was conducted on 25 patients who were candidate with unstable trochantric fractures that was managed by calcar replacing hemi-arthroplasty.
Mean age was 69.9 years (± 3.9) and ranged from 61 to 77 years. They were 10 males (40%) and 15 females (60%).
Informed consents were obtained from parents of all participants .The study was approved by the local ethics committee on research involving human subjects, faculty of medicine, Suez Canal University.
Results of the present study showed that:
• All studied cases were evaluated thoroughly preoperatively; according to AO/OTA classification, 16 cases had A2.3 fracture type, whereas, 7 had A3.3 fracture type and 2 cases had A2.2.