RU2335253C2 - Transplant for elimination of angular deformation of articular part of bone - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to traumatology and orthopedics and can be applied for taking transplant for elimination of angular deformation of articular part of bone. Autotransplant is made in form of rectangular with one slanting end face edge, located at angle, corresponding to angle of bone correction and having angular axial slot, whose size corresponds to distance between bone fragments on said axis.

EFFECT: reduction of risk of angular bone deformation.

6 dwg

Description

The invention relates to medicine, namely to traumatology and orthopedics, and can be used in surgical treatment of patients with improperly fused limb fractures.

Known transplant for bone replacement, consisting of allogeneic placental tissue and human fetal bone [1].

The disadvantage of this transplant is the low efficiency of its use in the reconstruction of the articular department of the long tubular bones of the limbs.

Known transplant for osteosynthesis of long tubular bones containing a ring made of autobone [2].

The disadvantage of this transplant is its lack of effectiveness when used for reconstruction of angular deformations of tubular bones.

Also known is a graft for bone defect replacement, taken from a distant donor zone [3].

The disadvantage of this transplant is the increased invasiveness of the operation and an increase in the time of its conduct, which worsens the results of treatment.

The aim of the creation of the present invention is to increase reparative osteogenesis while eliminating angular deformation of the articular section of the tubular bones of the extremities and improving the results of treatment of patients.

This goal is achieved by the fact that the autograft is taken from the diaphyseal fragment of the crossed bone and the autograft is made in the form of a rectangle with one inclined end face located at an angle corresponding to the angle of bone correction and having an angular axial groove, the value of which corresponds to the distance between the bone fragments on this axis.

Comparison of the proposed method of taking an autograft to eliminate angular deformation of the bone with others known in the field of medicine, showed its compliance with the criteria of the utility model.

The utility model is illustrated by drawings. Figure 1 shows incorrectly fused bone fragments: articular 1 and diaphyseal 2, with the line of the alleged osteotomy 3 and the angle of bone correction a, top view; figure 2 is the same side view; figure 3 is the same after an osteotomy and reposition of fragments, with the formed graft 4, an angular axial groove 5, figure 4 is the same side view; figure 5 is the same, with the graft 4 installed in the working position after eliminating bone deformation, top view; figure 6 is the same side view. The proposed graft is used as follows.

Preoperative planning is carried out with the measurement of the correction angles of the articular section of the tubular bone, for example, the distal radial metaepiphysis. Soft tissue is dissected under combined anesthesia in the area of maximum deformation to the bone. The bone is crossed along the concave side of the corner at the apex of deformation 3, parallel to the articular surface of the bone. When crossing the bone, two bone fragments are obtained: articular 1 and diaphyseal 2. Joint fragment 1 is displaced relative to the diaphyseal fragment 2 in the frontal and sagittal planes, until the deformation and restoration of the bone axis are completely eliminated, in accordance with the preoperative planning and temporarily fixed. From the diaphyseal fragment 2 bones, on the side of the pendulum saw and the osteotome that forms the graft 4 in the form of a rectangle, one of the end faces of which is made in the form of an angular groove 5, with dimensions, Resp largest gap between the bone fragments along its axis, inclined faces at an angle a equal to the angle correction of the bone. The graft 4 is removed from the diaphyseal fragment 2, rotated 180 ° and again placed back into the bone bed, with a shift to the articular part of the bone 1 at a distance equal to the correction value, overlapping the defect zone and creating support for the articular part of the bone. Perform osteosynthesis in one of the known ways. If necessary, blocks or granules of artificial bone are additionally placed in the cavity. The wound is sutured in layers.

The positive effect of the use of the proposed transplant is expressed in that it allows to eliminate bone deformation, prevents recurrence of angular displacement, the graft is taken in the surgical intervention area, which does not require the formation of an additional donor bed, prevents additional tissue trauma and reduces the duration of the operation.

The intervention is less traumatic, simple to implement, does not require expensive equipment and can be used in practical health care.

INFORMATION SOURCES.

1. USSR copyright certificate No. 1572559, M. Kl. A61B 17/00 1990

2. Copyright certificate of the USSR No. 1819585, M. Kl. A61B 17/58 1993

3. Fernandez D., Jupiter J. Fractures of the Distal Radius. 1996 .-- P.285-288.

Claims (1)

A method of taking a graft to eliminate angular deformation of the articular bone, including taking an autograft from the diaphyseal fragment of a crossed bone, characterized in that the autograft is made in the form of a rectangle with one inclined end face, located at an angle corresponding to the angle of bone correction, and having an angular axial groove, the value of which corresponds to the distance between bone fragments on a given axis.

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