Coupled torsional fixator and method of use

A device for external femoral anteversion correction of an intact femur, the intact femur comprising a distal femoral segment and a proximal femoral segment on opposing sides of a physis, the device comprising:

• a coupled ring assembly comprising:
• an outer ring assembly comprising:
• a first outer ring element;
• and
• a second outer ring element configured to couple with the first outer ring element to form the outer ring assembly;
• and
• an inner ring element configured to concentrically and rotatably couple with the outer ring assembly;
• a first fixation pin assembly comprising:
• a first pin securable to the distal femoral segment;
• and
• a first coupler configured to couple with the outer ring assembly and the first pin;
• a second fixation pin assembly comprising:
• a second pin securable to the proximal femoral segment;
• and
• a second coupler configured to couple with the inner ring element and the second pin;
• and
• a turnbuckle assembly comprising:
• a first fixation element configured to couple with the outer ring assembly;
• a second fixation element configured to couple with the inner ring element;
• and
• a spanning element configured to rotatably couple with the first fixation element and the second fixation element,
• wherein rotation of the spanning element:
• causes the outer ring assembly to rotate relative to the inner ring element;
• controls an angular position of the first pin with respect to the second pin;
• and
• imparts a torsional force to the intact femur to externally reduce anteversion of the intact femur.