Measuring the femoral antetorsion angle γ of a human...

Details Measuring the femoral antetorsion angle γ of a human... Measuring the femoral antetorsion angle γ of a human...

2011-04-12

2011-04-12

Casler, Brian (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S425000, C600S429000, C702S150000, C702S151000, C702S152000, C702S153000, C382S128000, C382S286000

Reexamination Certificate

active

07925324

ABSTRACT:
A method for defining an antetorsion angle γ of a femur is provided. The antetorsion angle γ is defined by two angles α′ and β that can be determined by means of two images of the femur, wherein the equation tan γ=tan α′/(cos β·cos θ) can be used to calculate the antetorsion angle γ.

REFERENCES:
patent: 5728128 (1998-03-01), Crickenberger et al.
patent: 2005/0015003 (2005-01-01), Lachner et al.
K.L. Hermann, et al., “Measuring Anteversion in the Femoral Neck from Routine Radiographs”, ACTA RADIOL, vol. 39, No. 4, Jul. 1998, pp. 410-415.
R. Hoffstetter et al., “Computer-Assisted Fluoroscopy-Based Reduction of Femoral Fractures and Antetorsion Correction”, Computer Aided Surgery, vol. 5, 2000, pp. 311-325.
Stephen B. Murphy et al., “Femoral Anteversion”, The Journal of Bone and Joint Surgery, Incorporated, vol. 69, No. 8, Oct. 1987, pp. 1169-1176.

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