RU35967U1 - Device for fixation and early development of the knee joint during surgical treatment of patellar dislocation - Google Patents

Description

DEVICE FOR FIXATION AND EARLY DEVELOPMENT

KNEE JOINT IN OPERATIVE TREATMENT

DISPOSAL OF THE PICKER.

The utility model relates to the field of medicine, namely to orthopedics and traumatology, and is used to treat dislocation of the patella.

A device is known for fixing the patella when it is dislocated, which makes it possible to free the posterior surface of the lower leg from structural elements to provide the possibility of laying the diseased limb in a functionally advantageous position, as well as providing a complete overview of the limb during radiography (Certificate No. 26407 of the Russian Federation, MKI A 61 V 17/60 for fixation of the patella when it is dislocated / Buravtsov P.P., Popkov D.A., RRC "WTO named after Academician G.A. Ilizarov (RF) .- No. 2002104802/20; Declared 02.21.2002; Published 10.12. 2002, Bull. 34).

However, the known device is applicable only with a mild degree of dislocation that does not require long-term fixation, while it does not allow the knee joint to be fixed, and also limits the amplitude of movement in the knee joint within 30-40 ° when it is developed due to the mismatch of the trajectory of the patella with the axis rotation in the knee joint.

The objective of this utility model is to develop the design of a device for fixation and early development of the knee joint in the surgical treatment of severe patella dislocation.

The problem is solved in that the device for fixation and early development of the knee joint during surgical treatment of patellar dislocation, containing supports, brackets, knitting needles and rods, consists of 4 supports pairwise interconnected by threaded rods, while the intermediate supports are connected by hinged blocks made in the form of interconnected three brackets, one of which is equipped with a spoke and is located between two brackets, each of which is connected to one of the intermediate supports, while one bracket is fixed TCR, and the other - rotation in the knee joint axis through relaxation and fastening bolts.

The present utility model is illustrated by a detailed description of the use of the device with reference to the drawings with the image of the general view of the device in standard projections, where

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llillliill IPC A 61 V 17/60

FIG. 1 illustrates a direct projection of a device,

FIG. 2 - illustrates a side view of the device

The device is used as follows.

In the operating room after treatment of the surgical field with antiseptic solutions, two spokes are used through the tibia in the frontal plane with soldering at a distance of 7-8 cm from each other in different directions, one of which 1 is on the inside through the metaphysis, and 2 on the outside border of metaphysis and diaphysis. Spokes 3, 4 are carried out similarly in the lower third of the thigh. The ends of the spokes 1, 2 are fixed in the supports 5, 6, and the ends of the spokes 3, 4 in the supports 7.8. Supports 5.6 and supports 7, 8 are connected in pairs with threaded rods

After the patella is installed in the anatomically correct position as a result of surgical intervention, a spoke with a thrust pad 9 is passed through it from the outside, the ends of which are fixed to the brackets 10, 11, which are elements of the hinge block connecting the supports on the hip 8 and lower leg 5 in the axis of rotation of the knee joint by brackets 12, 13. On the support 5, the rods 14-17 are rigidly fixed, pivotally connected to the brackets 10, 11, while the rods 14, 16 are rotatably fixed in the axis of the knee joint by means of a bolt connections of 18 brackets 10, 19, and 11, 20, and the rods 15, 17 are rigidly fixed.

The device is applied for a period of 4 weeks to protect the patellar ligament moved to a new place from stress during the development of the knee joint.

The proposed design of the device for fixation and early development of the knee joint during surgical treatment of the patellar dislocation allows for electrical stimulation of the quadriceps muscle with dislocations of the patella of moderate and severe degree, when the strength of the quadriceps muscle is significantly reduced, as well as to prevent excessive load on the patellar ligament. .

The proposed arrangement of the device allows when developing in the early stages, namely on the 6-7th day after the operation, to achieve a bending angle of more than 30-40 ° without the threat of tearing the patella ligament moved to a new place.

Thanks to the fastening of the knitting needle through the patella in the hinge block, mounted at the level of the axis of rotation of the knee joint, the trajectory of the patella approaches normal, without limiting the angle of bending in the knee joint.

The proposed device is used in clinical departments of the Russian scientific center "Restorative traumatology and orthopedics them. Acad. G. A. Ilizarova

Claims (1)

A device for fixing and early development of the knee joint during surgical treatment of patellar dislocation, containing supports, brackets, spokes and rods, characterized in that it consists of four supports pairwise interconnected by threaded rods, while the intermediate supports are connected by hinged blocks made in the form interconnected three brackets, one of which is equipped with a spoke and is located between two brackets, each of which is connected to one of the intermediate supports, while one bracket is fixed rigidly, and goy - rotatably mounted in the knee joint axis through relaxation and fastening bolts.