METHOD OF ESTIMATING DEGREE OF PELVIC RING ASYMMETRY ON POSTURAL RADIOGRAPHS Russian patent published in 2015 - IPC A61B6/00 A61B5/103 

FIELD: medicine.

SUBSTANCE: horizontal tangent lines to crests of the right and left iliac bones are built, the vertical is built from the middle of the sacrum basis and vertical tangents are drawn to the most laterally prominent points of the iliac wings of the right and left halves of the pelvis to their crossing with the horizontal tangents to the crests of the iliac bones. After that, right triangles, angles of which are represented by the most lateral points of the iliac wings and points of crossing of the horizontal tangents to the crests of the iliac bones with the vertical from the middle of the sacrum basis and with the vertical tangents to the iliac wings. A degree of asymmetry of the pelvic ring is determined by the value of the pelvis asymmetry coefficient (PAC), determined by the ratio of areas of the larger right triangle to the smaller one. In case the asymmetry is absent from both sides the PAC value equals 1.0.

EFFECT: method provides high self-descriptiveness of the estimation of the pelvic ring asymmetry degree on postural radiographs in horizontal and sagittal planes, which makes it possible both to compare the patients to each other in the quantitative respect by a degree of their asymmetry and to estimate treatment results.

2 dwg, 3 ex, 1 tbl