SU1003817A1 - Method of treating distrophic processes of neck and head of the femur - Google Patents

Description

ABOUT ISAI AND E

Inventions

TO AUTHOR'S CERTIFICATE

Union of Soviet 'Socialist

Republic <"1) 1003817

USSR State Committee for Inventions and Discoveries (61) Additional to ed. certificate-wu - (22) ϊ Announced 25.0450 (21) 2942676 / 28-13 with the addition of application No. (23) Priority

Published on 15.0353. Bulletin N9 10

Date of publication of the description 1503.83 (51) M. Cl. ³

A 61 V 17/00 (53) UDC 617.582 (088.8)

(54) METHOD FOR TREATING DYSTROPHIC PROCESSES OF THE NECK AND HIP HEAD

1.

The invention relates to medicine, namely to orthopedics and traumatology.

A known method of treating dystrophic processes of the neck and femoral head by multiple drilling of the neck and head and the use of a homotransplant [1

However, this surgical intervention does not have the desired restoration of the broken regenerative ability of the bone. The operation of multiple drilling, causing fracture processes, does not have a long stimulating effect. The number of holes and their size are set arbitrarily, without taking into account the diameter of the neck and femoral head.

There is also a method of treating degenerative processes of the neck and femoral head by forming a channel in them and introducing a graft and C2).

. . However, in the implementations of the known method, one graft partially increases the regenerative ability only in a small area of the dystrophic focus. As a result, the treatment is delayed - the pathological process enlightenment zone disappears no earlier than after 6 months. _k

The purpose of the invention is to reduce the duration of treatment.

This goal is achieved by the fact that according to the method of treating dystrophic processes of the neck and femoral head by forming an ud channel in them and introducing a graft, the area of the pathological focus is previously determined by the radiograph and the number of channels is calculated by the formula

where N is the number of channels, g is the radius of the femoral neck, mm, I = 3, 14,

Pg is the sum of the radii of the graft and the mother bed, then the calculated number of channels with a radius of 2-2.5 mm at a distance of 4-5 mm from each other is formed in the head and neck of the thigh, and the grafts are introduced into them with a free fit.

The method is as follows.

A longitudinal section along the outer surface of the thigh reveals a bone below the greater trochanter. Separating the periosteum slightly, using a drill with a radius of 2 mm, the required number of tunnels into which allografts are inserted without force clogging are formed, passing from under the trochanteric region into the cervix to the subchondral layer of the head, with a thickness equal to the diameter of the formed channel and a length equal to the length of the channel.

The number of tunnels and transplants introduced into them is set according to an x-ray, depending on the diameter of the neck and femoral head in accordance with the formula.

After the introduction of allografts, the wound is sutured tightly. In the postoperative period, immobilization is carried out by stretching the limb with a cuff for the lower leg.

If necessary, correct the cervical-diaphysis femoral angle, this operation is combined with corrective osteotomy.

The combination of the factor of sufficient destruction of the pathological focus and the introduction of a strictly defined number of allografts as sources of stimulation of regeneration creates optimal conditions for the restoration of previously impaired regenerative ability of bone tissue.

Sufficient trauma through multiple drilling leads to the appearance of a significant amount of young undifferentiated or weakly differentiated tissue elements, which in the process of their further development, form bone tissue for the entire size of the neck and femoral head.

Allografts introduced into the pathological focus serve as a skeleton. for organotopic bone restoration and a source of stimulation of regeneration from surrounding tissues, bed tissues under the influence of a transplant differentiate in the direction of osteogenesis. The process of resorption of transplants contributes to the activation of osteoplastic activity of osteogenic tissue elements, their proliferation, differentiation towards the formation of osteoblastic tissue with all further forms of its development, leading to the formation of new bone tissue.

Due to the calculation by the formula, the optimal number of necessary channels and allotransplates of a certain diameter is established before the operation on radiographs, which subsequently leads to uniform restructuring and restoration of previously impaired regenerative ability of bone tissue over the entire thickness of the neck and femoral head.

The proposed method was operated on nine patients. In all cases, a positive result was obtained. Moreover, within two months after the operation, the enlightenment zone of the pathological process disappears.

The proposed method for the treatment of degenerative processes of the neck and femoral head is technically simple and ensures the restoration of previously damaged bone regenerative ability in the shortest possible time.

Claims (1)

Claim A method of treating dystrophic processes of the neck and femoral head by forming a canal and a vet graft in them, characterized in that, in order to shorten the treatment, a preliminary X-ray is used to determine the generation of hepatitis, but the sparing pathological focus and the number of mule canals are calculated by form N --I— | L where N g L ^g 2 - number of channels; - radius of the femoral neck, mm; = 3, 14, - the sum of the radii of the graft and the mother bed, then in the head and neck of the thigh form the calculated number of channels with a radius of 2-2.5 mm at a distance of 4-5 mm from each other, and the grafts are introduced into them with a free fit.