2014, Number 2
Functional and biomechanical advantages of centromedular nail vs. dynamic hip screw in intertrochanteric fractures
Vargas OPD, Antonio RCE, Mejía RLC
Language: Spanish
References: 11
Page: 156-162
PDF size: 695.65 Kb.
ABSTRACT
Background: intertrochanteric fractures present a public health problem with economic, social and psychological impact. Development of implants that improve biomechanical environment are essential for a speedy recovery and fewer complications. We present the results obtained in 1 year with Centromedular Proximal Femoral Nail vs. DHS.Methods and Materials: Prospective, observational and comparative study on patients over 60 years old, with transtrochanteric fracture AO 31A1-3 and 31A2-3 with DHS or Proximal Femoral Nail TAN placement, with a follow up of 20 weeks with a Harris scale.
Results: 113 patients with transtrochanteric fracture were operated in one year, 77 DHS and 36 centromedular nails, average age of 80 years, predominantly female 3:1. With post surgery hospital stay of 2 to 3 days with nail (p=0.038) vs DHS, and an anatomical reduction of 72.23%, Montoya III consolidation at 14 weeks and an 80 to 89 Hip Harris Score; having good functional performance 20 weeks after surgery.
Conclusions: The centromedular nail provides an improved biomechanical environment with a shorter lever arm, giving a greater load delivery and allowing less collapse for a medial stable configuration, facilitates an anatomical reduction, thus reducing the post surgery hospital stay (p=0.038), better hemodynamic recovery, with a quicker rehabilitation assisted in the first weeks, thus allowing consolidation of the fracture and a prompt ambulation, no significant advantage is observed in the functionality with respect the DHS (p=1.0) being very similar methods on a medium time frame.
REFERENCES