METHOD FOR HIP REPLACEMENT WITH USING CORRECTIVE OSTEOTOMY Russian patent published in 2014 - IPC A61B17/56 A61B6/00 

FIELD: medicine.

SUBSTANCE: X-ray examination is performed. The hip joint is approached, and the trochanteric region is isolated. That is followed by a transverse osteotomy of the femoral bone in the subtrochanteric region. A proximal fragment is mobilised along the entire length with preserving muscle attachment points. A baseline (1) is drawn on the X-ray image through apexes of the ischial tuberosities. A true rotation centre (2) of the cotyloid cavity is determined. A length of a perpendicular (3) dropped from the rotation centre (2) on the baseline (1) is measured. A length of a perpendicular (4) from an apex of the greater trochanter to the baseline (1) is measured. A required length of the bone resection (5) is determined as a difference of the measured length of the perpendiculars (4) and (3). A line of the corrective osteotomy (6) is specified at 8 mm and more from the subtrochanteric region of the lesser trochanter. That is followed by a shortening osteotomy of the distal portion of the feromal bone with the bone resection of the planned length (5). Proximal and distal fragments of the femoral bone are notched according to the Russian lock technique.

EFFECT: method provides the integrity of the proximal fragment of the femoral bone, the safety of the extremity lengths, the high outcome of the bone fusion by the optimal osteotomy, the intramedullary fixation of the bone fragments, as well as the minimum risk of the onset of neurological pathologies by the absence of tension and injury of the sciatic nerve.

4 dwg, 1 ex