METHOD OF TREATING PERTHES DISEASE Russian patent published in 2012 - IPC A61B17/56 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely traumatology and orthopaedics. It involves an external fixation device applied to a hip and additional support by an iliac bone. An anterior and posterior portion of a mid-gluteus at a base of a greater trochanter in relation to destruction focus localisation is dissected. The dissected portion of the muscle backwards or forward are moved on pre-delivered tendon sutures. It is followed by intertrochanteric hip osteotomy along a lower edge of a femoral neck contour, A bone wedge is cut off from a distal fragment of a femoral bone at an angle equal to a neck-shaft angle difference of an affected and healthy segments of an extremity. A base of the bone edge is turned inside with screwing backwards at an excessive antetorsion angle relatively to the first osteotomy so that to correct the AT and NC angles completely when reducing the bone fragments. Two intraosteal rods are introduced in the femoral neck. The rods are fixed in a neck support which is connected with an apparatus applied to the hip and the iliac bone in a position of AT and NCA correction. The affected area is unloaded by rotating the support neck by making gradual femoral neck rotation.

EFFECT: method provides correction of the biomechanical angles of the proximal portion of hip, prevents hip joint contracture following femoral neck rotation, ensures stable fixation of the femoral fragments in the corrected position.

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