METHOD FOR DETERMINING FIBULA DISLOCATION IN DISTAL CRUS PORTION Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: method involves taking foot imprint and outline picture, drawing bimalleolar line and determining longitudinal axis of the foot. To do it, transverse axis of internal ankle-bone is additionally drawn intersecting the longitudinal foot axis at right angle and the bimalleolar line at an angle of α corresponding to the magnitude of external ankle-bone displacement relative to internal ankle-bone of the tibia in its distal portion. Talocrural articulation center projection position is determined in intersecting the transverse internal ankle-bone axis at an angle of β corresponding to the magnitude of external ankle-bone displacement relative to the talocrural articulation center projection position. The external ankle-bone displacement relative to internal ankle-bone being equal to 10-15° and that of the talocrural articulation center projection to 20-30°, tibia position is considered to be normal in the distal portion of tibia. The external ankle-bone displacement relative to internal ankle-bone being equal to 15.5-20° and that of the talocrural articulation center projection to 31-40°, moderate displacement of tibia position in the distal portion of tibia is considered to be the case. The external ankle-bone displacement relative to internal ankle-bone being greater than 20,5° and that of the talocrural articulation center projection greater than 41°, marked displacement of tibia position in the distal portion of tibia is considered to be the case.

EFFECT: high accuracy of the method.

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