A standardized fracture reduction model for long bones - Implication and evaluation in the femur

作者：Oszwald Markus^*; Westphal Ralf; Calafi Afshin; Stier Rebecca; Mueller Christian W; Gaulke Ralph; Wahl Friedrich; Krettek Christian; Goesling Thomas

来源：Technology and Health Care, 2010, 18(6): 387-391.

DOI：10.3233/THC-2010-0597

• Fracture model
• femur
• fracture reduction
• navigation
• robustness

Fractures of the femoral bone are frequent injuries with a wide range of affected individuals. New treatment strategies and technologies are being explored permanently. Their quality is biomechanically judged by the accuracy of the anatomical reduction. Malalignment of the fragments would have an eminent impact on the overall outcome and rehabilitation. To establish a method for investigations of the reduction results of femoral fractures, we developed a model, using a navigation system for taking measurement. The dynamic reference bases (DRBs) where mounted to the intact femoral bone and registered as the reference position. A special construction allowed removal and reattachment of the DRBs without provoking change in the DRB-bone system. The model was evaluated in it's constancy. Translational deviations remained below 0.9 mm and rotational deviations below 0.3 degrees after 40 repetitive reattachments. The model could prove to be valid and reliable. An application in long-bone trauma research is reasonable.

• 出版日期2010