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Flexion and internal rotation
10%
294/3066
Extension and internal rotation
72%
2210/3066
Flexion and external rotation
7%
224/3066
Extension and external rotation
8%
239/3066
Abduction and internal rotation
3%
90/3066
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Subtrochanteric fractures will cause a proximal fragment to be flexed, abducted, and externally rotated due to the imbalanced proximal muscular attachments. The proximal fragment would likely have to be extended, adducted, and internally rotated to obtain a proper reduction. Lundy did a review on subtrochanteric fractures. He reviews that these fractures can be effectively stabilized with 95 degrees plates, femoral reconstruction nails, or trochanteric femoral nails. Although intramedullary nails produce very stable constructs that are a great treatment option for this fracture, 135 degrees hip screw-plates are not suitable in the treatment of subtrochanteric femoral fractures due to the high risk of loss of fixation and fracture displacement. Illustration A depicts the applicable deforming muscle forces.
3.4
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