METHOD FOR ELIMINATING PERIARTICULAR VALGUS-VARUS DEFORMITIES AT LEVEL OF KNEE JOINT IN YOUNG CHILDREN USING ORTHOPAEDIC APPARATUS Russian patent published in 2025 - IPC A61F5/01 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to traumatology and orthopaedics, and can be used for elimination of periarticular valgus-varus deformities at the level of knee joint in children with application of orthopaedic apparatus. Elimination of deformation is carried out using the device presented in figure 1. Attachment elements of the device, made in the form of detachable sleeves, are applied and fixed on the patient’s hip and shin so that the fixed hinge is located along the axis of movement of the joint of the patient’s extremity in the position of the existing flexion contracture of the joint, which is eliminated discretely, by manual extension of the knee joint by the detachable sleeves, by rotating the plates of the fixed hinge relative to each other when the threaded connection is loosened along the axis of rotation of the joint. Rate of extension correction per day is equal to a turn through the width of one tooth. Process is continued until the contracture is eliminated, after which the valgus, or varus, deformation is eliminated with the position of the hip and shin removed to the anatomically correct position of the physiological axis of the extremity, rate of distraction in first 10 days is 1 mm a day on the concave side of deformation and is provided by turning the nut installed in the bracket for one turn. Distraction rate is then reduced to 0.25 mm a day, which corresponds to a turn of said nut by 1/4 of a turn. Simultaneously, the extremity is loaded. Unloading insole made of foam plastic is inserted into the patient’s shoes, the shape of which in the cross section has the form of a right-angled triangle having a hypotenuse at the base, and in the case of valgus deformity, the vertex of its smaller angle is turned to the outer side of the foot, and in case of varus deformity – inward. As the deformation is corrected, the deformation angle decreases, the load is increased, and the shape of the unloading insole is corrected by cutting its angle at the vertex facing the side opposite to the deformation. At onset of pain syndrome rate of distraction is reduced, taking break for 2-3 days.

EFFECT: method provides reducing the length of treatment, reducing the number of injuries of the intervention, the absence of recurrent deformities, while improving the anatomical and functional outcomes of the treatment ensured by the physiological, non-traumatic elimination of the axial deformation in young children using the Ilizarov effect.

2 cl, 6 dwg, 1 ex