CN105943147A - A femoral neck fracture locking and fixing device and method - Google Patents

Abstract

The invention discloses a femoral neck fracture locking and fixing device and method. The femoral neck fracture locking and fixing device includes a locking plate, a first locking nail, a second locking nail and a third locking nail. The shape of the lower part of the greater trochanter of the femur matches. The locking plate is provided with a first locking hole, a second locking hole and a third locking hole with an oblique structure. The first locking nail, the second locking nail, and the third locking nail The rear ends of the first locking hole, the second locking hole, and the third locking hole are respectively connected to the locking plate, and the first locking nail, the second locking nail, and the third locking nail are connected to the locking plate. form a triangular pyramid structure. The femoral neck fracture locking and fixing device and method can effectively resist external force while ensuring the reduction of the femoral neck, and only need to use three locking nails, and do not need to use multiple nails to cause additional damage to the patient, which is beneficial to the patient's rehabilitation.

Description

Femoral neck fracture locking and fixing device and method

technical field

The invention relates to the technical field of medical devices, in particular to a femoral neck fracture locking and fixing device and method.

Background technique

In recent years, with the aging of the population and the development of the transportation and construction industries, the incidence of femoral neck fractures in the elderly and young adults has gradually increased. Femoral neck fracture refers to the fracture of the femoral neck, usually refers to the fracture between the femoral head and the base of the femoral neck, and is the most common type of hip fracture. Due to the particularity of femoral neck fractures in pathophysiology and biomechanics, its treatment has always been the focus of orthopedic research. Traditionally, for the reduction and fixation of patients with femoral neck fractures, the internal locking treatment method is generally adopted, and multiple locking nails and locking plates are used to cooperate to form a compression locking. However, when it is installed on the patient's femur, in addition to multiple locking nails, generally at least one fixing nail needs to be installed, which causes additional injury to the patient. In addition, when the locking nail is driven in, under the action of external forces such as shear force and torsion, the nail often shifts, and even punctures the upper outer quadrant of the femur. And it is not conducive to the recovery of patients.

Contents of the invention

Based on this, the present invention overcomes the defects of the prior art and provides a femoral neck fracture locking and fixing device and method that can effectively resist external force, drive fewer nails into the patient's body, and facilitate the recovery of the patient.

Its technical scheme is as follows:

A femoral neck fracture locking and fixing device, comprising a locking plate, a first locking nail, a second locking nail and a third locking nail, the inner surface of the locking plate matches the shape of the lower part of the greater trochanter of the femur, and the locking plate is provided with There are first locking hole, second locking hole and third locking hole with inclined structure, and the rear ends of the first locking nail, the second locking nail and the third locking nail are in the first locking hole, the second locking nail respectively. The locking hole and the third locking hole are connected to the locking plate, and the first locking nail, the second locking nail, and the third locking nail form a triangular pyramid structure with the locking plate.

In one of the embodiments, the first locking hole and the second locking hole are located on the same horizontal line, the longitudinal center plane between the first locking hole and the second locking hole is a first symmetrical plane, and the first The axis of the locking hole is offset towards the first symmetrical plane, the axis of the second locking hole is offset towards the first symmetrical plane, and the axis of the third locking hole is located on the first symmetrical plane.

In one of the embodiments, when the locking plate is installed on the femur, the axis extension lines of the first locking hole, the axis extension lines of the second locking hole and the axis extension lines of the third locking hole are all stressed through the femur The front ends of the first locking nail, the second locking nail and the third locking nail are respectively located at the center of the femoral force.

In one of the embodiments, when the locking plate is installed on the femur, the axis extension line of the first locking hole and the axis extension line of the second locking hole are respectively located on both sides of the force center of the femur, and the third locking hole The axis extension line of the locking hole passes through the stress center of the femur, the front ends of the first locking nail and the second locking nail are respectively located on both sides of the stress center of the femur, and the front end of the third locking nail passes through the first locking nail Between the second locking nail and through the center of femoral force.

In one embodiment, the axis of the first locking hole is offset by 1-5° towards the first plane of symmetry, and the axis of the second locking hole is offset by 1-5° towards the first plane of symmetry .

In one of the embodiments, the first locking hole and the second locking hole are located at the upper part of the locking plate, and the third locking hole is located at the lower part of the locking plate; or, the first locking hole and the second locking hole are The second locking hole is located at the lower part of the locking plate, and the third locking hole is located at the upper part of the locking plate.

In one of the embodiments, the walls of the first locking hole, the second locking hole, and the third locking hole are provided with internal threads, and the rear of the first locking nail, the second locking nail, and the third locking nail are The ends are respectively provided with rear-end external threads that match the internal threads, the first locking nail, the second locking nail, and the third locking nail are respectively threaded with the locking plate, and the first locking nail, the second locking nail The front ends of the nail and the third locking nail are respectively provided with front-end external threads, and the pitches of the rear-end external threads of the first locking nail, the second locking nail and the third locking nail are smaller than the pitches of the front-end external threads.

In one of the embodiments, the first locking nail, the second locking nail and the third locking nail are all hollow nails.

A method for locking and fixing a femoral neck fracture, comprising the following steps:

The medial surface of the locking plate fits on the lower part of the greater trochanter of the femur;

The first locking nail, the second locking nail and the third locking nail are respectively screwed in through the first locking hole, the second locking hole and the third locking hole of the locking plate, the first locking nail, the second locking nail and the third locking nail The rear end of the locking plate is connected with the locking plate, and the front ends of the first locking nail, the second locking nail and the third locking nail are all located at the center of the femoral force;

A triangular pyramid structure is formed between the first locking nail, the second locking nail, the third locking nail and the locking plate.

In one of the embodiments, the medial surface of the locking plate is fitted and installed in front of the lower part of the greater trochanter, further comprising the steps of:

Judging the angle between the fracture line and the horizontal plane, if the angle between the fracture line and the horizontal plane is greater than 45°, use a reverse product structure, the first locking hole and the second locking hole on the locking plate are located on the upper part of the locking plate, and the second locking hole on the locking plate The three locking holes are located at the lower part of the locking plate; if the angle between the fracture line and the horizontal plane is less than 45°, the genuine structure is adopted, the first locking hole and the second locking hole on the locking plate are located at the lower part of the locking plate, and the third locking hole on the locking plate The holes are located on the upper part of the locking plate.

The beneficial effects of the present invention are:

In the aforementioned locking and fixing device for femoral neck fractures, the locking plate is installed on the lower part of the greater trochanter, and its inner surface matches the shape of the lower part of the greater trochanter, and can closely fit the femur. When the first locking nail, the second locking nail and the third locking nail are actually installed in the femur, the first locking nail, the second locking nail, the third locking nail and the locking plate closely fitting with the lower part of the greater trochanter can form three Pyramid-shaped structure, when the femur is subjected to shear force, the directions of the three locking nails are different, and the three locking nails and the locking plate can form constraints with each other, and the locking nails are not easy to shift and retreat. The femoral neck fracture locking and fixing device can effectively resist external force while ensuring the reduction of the femoral neck, and only needs to use three locking nails, without using multiple nails to cause additional damage to the patient, and the number of nails driven into the patient's body is relatively small. less, which is conducive to the recovery of patients.

In the femoral neck fracture locking and fixing method, the medial surface of the locking plate is attached and installed on the lower part of the greater trochanter of the femur. After the first locking nail, the second locking nail, and the third locking nail are screwed into the femur, they can form a stable joint with the locking plate. The triangular pyramid-shaped structure, when the femur is subjected to shear force, the directions of the three locking nails are different, and the three locking nails and the locking plate can form constraints with each other. The locking nails are not easy to shift and retreat, and can effectively resist External force is conducive to the recovery of patients. Moreover, the front ends of the first locking nail, the second locking nail and the third locking nail are all located at the center of the femoral force. On the one hand, the stability of the triangular pyramid-shaped structure can be further strengthened; The front ends of the locking nail and the third locking nail are located at the center of the force, and do not pass through the upper and outer quadrant of the femur, so it is not easy to puncture the femur, which is beneficial to the rehabilitation of the patient.

Description of drawings

FIG. 1 is a schematic structural view of a femoral neck fracture locking and fixing device according to Embodiment 1 of the present invention;

2 is a schematic diagram of installation of the femoral neck fracture locking and fixing device according to Embodiment 1 of the present invention;

3 is a schematic structural view of the femoral neck fracture locking and fixing device described in Embodiment 2 of the present invention;

4 is a schematic diagram of installation of the femoral neck fracture locking and fixing device described in Embodiment 2 of the present invention;

Fig. 5 is a schematic flow chart of a method for locking and fixing a femoral neck fracture according to an embodiment of the present invention.

Explanation of reference signs:

10, locking plate, 12, first locking hole, 14, second locking hole, 16, third locking hole, 20, first locking nail, 30, second locking nail, 40, third locking nail, 100, femur , 110, femoral neck, 120, greater trochanter of femur.

detailed description

Embodiments of the present invention are described in detail below:

Embodiment one

As shown in FIGS. 1 and 2 , a femoral neck fracture locking and fixing device includes a locking plate 10 , a first locking nail 20 , a second locking nail 30 and a third locking nail 40 . The inner surface of the locking plate 10 matches the shape of the lower part of the greater trochanter 120 , and the locking plate 10 is provided with a first locking hole 12 , a second locking hole 14 and a third locking hole 16 with oblique structures. The rear ends of the first locking nail 20, the second locking nail 30, and the third locking nail 40 are connected to the locking plate 10 at the first locking hole 12, the second locking hole 14, and the third locking hole 16, respectively. In connection, the first locking nail 20 , the second locking nail 30 , the third locking nail 40 and the locking plate 10 form a triangular pyramid structure. The straight line connecting the center of the first locking hole 12, the second locking hole 14 and the third locking hole 16 on the outer surface of the locking plate 10 is formed into a triangle, so that the first locking nail 20. The second locking nail 30, the third locking nail 40 and the locking plate 10 form a triangular pyramid structure. The inner surface of the locking plate 10 refers to the surface contacting the femur 100 when the locking plate 10 is installed on the human femur 100 , and the outer surface refers to the surface away from the femur 100 .

Specifically, the walls of the first locking hole 12, the second locking hole 14, and the third locking hole 16 are provided with internal threads, and the first locking nail 20, the second locking nail 30, and the third locking nail 40 The rear end of the rear end is respectively provided with the rear end external thread that matches the internal thread, and the first locking nail 20, the second locking nail 30, and the third locking nail 40 are respectively threaded with the locking plate 10, and the first The front ends of the locking nails 20, the second locking nails 30 and the third locking nails 40 are respectively provided with front external threads, and the pitch of the rear external threads of the first locking nails 20, the second locking nails 30 and the third locking nails 40 is Less than the pitch of the external thread at its front end. With the above structure, the connection is convenient, and the process of screwing in the first locking nail 20, the second locking nail 30, and the third locking nail 40 can realize pressure on the fractured end. The first locking nail 20, the second locking nail 30 and the third locking nail 40 are all hollow nails, and the middle parts of the first locking nail 20, the second locking nail 30 and the third locking nail 40 have a through hole of 1-1.5mm , easy to insert Kirschner wire.

Generally, the positions of the greater trochanter 120 of different human bodies are different, but the contour structure of the lower part of the greater trochanter 120 is basically the same. The locking plate 10 is installed on the lower part of the greater trochanter 120, and its inner surface matches the shape of the lower part of the greater trochanter 120. The locking plate can fit closely with femurs of different human bodies, with good fitting performance and a wide range of applications. When the first locking nail 20, the second locking nail 30 and the third locking nail 40 are actually installed in the femur, the first locking nail 20, the second locking nail 30, the third locking nail 40 and the lower part of the greater trochanter 120 of the femur are in close contact with each other. The combined locking plate 10 can form a triangular pyramid-like structure to establish a stable structure of the femoral trabeculae. When the femur 100 is subjected to shear force, the directions of the three locking nails are different, and the three locking nails and the locking plate 10 can form a mutual relationship. Restricted, locking nails are not easy to shift and back out. The femoral neck fracture locking and fixing device can effectively resist external force while ensuring the reduction of the femoral neck 110, and only needs to use three locking nails, and does not need to use multiple nails to cause additional damage to the patient. less, which is conducive to the recovery of patients.

Further, the first locking hole 12 and the second locking hole 14 are located on the same horizontal line, the longitudinal center plane between the first locking hole 12 and the second locking hole 14 is a first symmetrical plane, and the first The axis of the locking hole 12 is offset towards the first plane of symmetry, the axis of the second locking hole 14 is offset towards the first plane of symmetry, and the axis of the third locking hole 16 is located on the first plane of symmetry superior. Wherein, the longitudinal direction refers to the direction along the length of the femur 100 when the locking plate 10 is installed on the femur 100 . The rear ends of the first locking nail 20, the second locking nail 30 and the third locking nail 40 are installed in the first locking hole 12, the second locking hole 14 and the third locking hole 16 respectively, therefore, the first locking nail 20 and the third locking nail 40 The first locking hole 12 is coaxial, the second locking nail 30 is coaxial with the second locking hole 14 , and the third locking nail 40 is coaxial with the third locking hole 16 .

With the above structure, on the one hand, the positional relationship of the first locking nail 20, the second locking nail 30 and the third locking nail 40 conforms to the mechanical characteristics of the femur, and the first locking nail 20, the second locking nail 30, the third locking nail 40 and The triangular pyramid-shaped structure formed by the locking plate 10 is more stable, and can effectively resist external force while ensuring the reduction of the femoral neck 110, and is not easy to withdraw the screw; One symmetrical plane is biased, and the second locking nail 30 is biased toward the first symmetrical plane when installed on the second locking hole 14. When the first locking nail 20 and the second locking nail 30 are actually installed and screwed into the femur, they will not be punctured. The cortical bone at the femoral neck 110 will not pierce the femur 100, so it is safe to use, does not cause additional injury to the patient, and is conducive to the rehabilitation of the patient. In this embodiment, the axis of the first locking hole 12 is offset by 1-5° towards the first symmetry plane, and the axis of the second locking hole 14 is offset by 1-5° towards the first symmetry plane , can prevent the first locking nail 20 and the second locking nail 30 from piercing the outer side of the femur 100, and make the front ends of the first locking nail 20 and the second locking nail 30 approach the center of the femoral force. In addition, it is also possible to prevent the first locking nail 20 and the second locking nail 30 from being offset too much and interfering with each other. The stress center of the femur refers to the junction of the tension-resistant bone trabecula and the pressure-resistant bone trabecular.

In this embodiment, when the locking plate 10 is installed on the femur 100, the axis extension line of the first locking hole 12, the axis extension line of the second locking hole 14 and the axis extension line of the third locking hole 16 all pass through Femoral stress center, the front ends of the first locking nail 20 , the second locking nail 30 and the third locking nail 40 are respectively located at the femoral stress center. Seen from the side, the three locking nails show a triangular fixation structure. Seen from space, the first locking nail 20, the second locking nail 30 and the third locking nail 40 all point to the center of the femoral force, and the first locking nail 20, the second locking nail The front ends of the locking nails 30 and the third locking nails 40 do not exceed the force center of the femur. On the one hand, the three locking nails can withstand shear force and torsion force in all directions, and the triangular pyramid-shaped structure formed with the locking plate 10 is more stable. , the locking nails are not easy to be displaced and withdrawn; on the other hand, the three locking nails are all far away from the outer upper quadrant of the femur, so the femur will not be punctured and will not cause harm to the patient.

The structure of the femoral neck fracture locking and fixing device can be a counterfeit structure or a genuine structure. The first locking hole 12 and the second locking hole 14 are located at the upper part of the locking plate 10, and the third locking hole 16 is located at the lower part of the locking plate 10. When the locking plate 10 is installed on the femur 100, the first The line connecting the centers of the locking hole 12 , the second locking hole 14 and the third locking hole 16 on the outer surface of the locking plate 10 is an upside-down triangle, which is an inverted structure. The first locking hole 12 and the second locking hole 14 are located at the lower part of the locking plate 10, and the third locking hole 16 is located at the upper part of the locking plate 10. When the locking plate 10 is installed on the femur 100, the first The line connecting the centers of the locking hole 12 , the second locking hole 14 and the third locking hole 16 on the outer surface of the locking plate 10 is an upright triangle, which is a genuine structure. When the femoral neck fracture locking and fixing device is used in practice, it is possible to choose whether to use a counterfeit structure or a genuine structure according to the angle between the fracture line and the horizontal plane. Specifically, if the angle between the fracture line and the horizontal plane is greater than 45°, a femoral neck fracture locking device with a reverse structure can be used; if the angle between the fracture line and the horizontal plane is less than 45°, a femoral neck fracture locking device with a genuine structure can be used. Furthermore, more locking nails are made to be perpendicular to the fracture line as much as possible, so as to improve the ability of anti-shearing and increase the stability of fracture fixation. The femoral neck 110 fracture locking device described in this embodiment can select a structure according to the direction of the actual fracture line of the patient, has flexible application, and has good fracture fixation stability.

A method for locking and fixing a femoral neck fracture, comprising the following steps:

S100: the inner surface of the locking plate 10 is attached to the lower part of the greater trochanter 120 of the femur;

Further, before the step S100, it also includes the step of: judging the angle between the fracture line and the horizontal plane, if the angle between the fracture line and the horizontal plane is greater than 45°, using a reverse product structure, the first locking hole 12 on the locking plate 10 and the second The second locking hole 14 is located at the top of the locking plate 10, and the third locking hole 16 on the locking plate 10 is located at the bottom of the locking plate 10; The locking hole 12 and the second locking hole 14 are located at the lower part of the locking plate 10 , and the third locking hole 16 on the locking plate 10 is located at the upper part of the locking plate 10 . When the locking plate 10 is actually installed, it is possible to choose whether to use the reverse structure or the genuine structure according to the angle between the fracture line and the horizontal plane. If the angle between the fracture line and the horizontal plane is greater than 45°, a femoral neck fracture locking and fixing device with reverse structure can be used; As many locking nails as possible should be perpendicular to the fracture line to improve the shear resistance and increase the stability of fracture fixation.

S200: The first locking nail 20, the second locking nail 30, and the third locking nail 40 are respectively screwed in through the first locking hole 12, the second locking hole 14, and the third locking hole 16 of the locking plate 10, and the first locking nail 20 , The rear ends of the second locking nail 30 and the third locking nail 40 are connected to the locking plate 10, and the front ends of the first locking nail 20, the second locking nail 30 and the third locking nail 40 are all located at the center of the femoral force;

S300 : A triangular pyramid structure is formed between the first locking nail 20 , the second locking nail 30 , the third locking nail 40 and the locking plate 10 .

In the femoral neck fracture locking and fixing method, the medial surface of the locking plate 10 is installed on the lower part of the greater trochanter 120 of the femur. After the first locking nail 20, the second locking nail 30, and the third locking nail 40 are screwed into the femur 100, they can A stable triangular pyramid-shaped structure is formed between the locking plates 10. When the femur is subjected to shear force, the directions of the three locking nails are different. The three locking nails and the locking plate 10 can form constraints with each other, and the locking nails are not easy to shift. , Nail withdrawal phenomenon, can effectively resist external force, and is conducive to the rehabilitation of patients. Moreover, the front ends of the first locking nail 20, the second locking nail 30 and the third locking nail 40 are all located at the center of the femoral force, which can further strengthen the stability of the triangular pyramid structure on the one hand, and on the other hand, the first locking nail 20. The front ends of the second locking nail 30 and the third locking nail 40 are located at the stress center, away from the upper outer quadrant of the femur, which is not easy to puncture the femur, which is beneficial to the patient's recovery.

Embodiment two

The difference between this implementation and the first embodiment is that the front ends of the first locking nail 20 , the second locking nail 30 and the third locking nail 40 in the first embodiment are all located at the center of the femoral force. In this embodiment, as shown in Fig. 3 and Fig. 4, when the locking plate 10 is mounted on the femur 100, the axis extension line of the first locking hole 12 and the axis extension line of the second locking hole 14 are respectively located at On both sides of the femoral stress center, the axis extension line of the third locking hole 16 passes through the femoral stress center, and the front ends of the first locking nail 20 and the second locking nail 30 are respectively located on both sides of the femoral stress center, The front end of the third locking nail 40 passes between the first locking nail 20 and the second locking nail 30 and passes through the center of the femur. After the three locking nails are installed on the femur 100, the three locking nails show a triangular fixing structure from the side view, and the first locking nail 20, the second locking nail 30 and the third locking nail 40 form a stable triangular pyramid shape from the perspective of space. The structure can effectively resist external force while ensuring the reduction of the femoral neck 110 , and will not cause additional damage to the patient, which is beneficial to the rehabilitation of the patient.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a femoral neck fracture locking and fixing device, is characterized in that, comprises locking plate, the first locking nail, the second locking nail and the 3rd locking nail, the inner surface of described locking plate matches with the lower part of the greater trochanter of femur shape, The locking plate is provided with a first locking hole, a second locking hole and a third locking hole with an inclined structure, and the rear ends of the first locking nail, the second locking nail and the third locking nail are respectively on the A locking hole, a second locking hole, and a third locking hole are connected to the locking plate, and the first locking nail, the second locking nail, and the third locking nail form a triangular pyramid structure with the locking plate. 2. The femoral neck fracture locking and fixing device according to claim 1, characterized in that, the first locking hole and the second locking hole are located on the same horizontal line, and the gap between the first locking hole and the second locking hole The longitudinal central plane is the first symmetrical plane, the axis of the first locking hole is offset towards the first symmetrical plane, the axis of the second locking hole is offset towards the first symmetrical plane, and the third locking hole is offset towards the first symmetrical plane. The axis of the hole lies on said first plane of symmetry. 3. femoral neck fracture locking and fixing device according to claim 2, is characterized in that, when described locking plate is installed on femur, the axis extension line of described first locking hole, the axis extension line of second locking hole and The extension lines of the axes of the third locking holes pass through the stress center of the femur, and the front ends of the first locking nail, the second locking nail and the third locking nail are respectively located at the stress center of the femur. 4. The femoral neck fracture locking and fixing device according to claim 2, characterized in that, when the locking plate is installed on the femur, the axis extension line of the first locking hole and the axis extension line of the second locking hole respectively Located on both sides of the femoral stress center, the axis extension of the third locking hole passes through the femoral stress center, the front ends of the first locking nail and the second locking nail are respectively located on both sides of the femoral stress center, the The front end of the third locking nail passes between the first locking nail and the second locking nail and passes through the center of the femoral force. 5. The femoral neck fracture locking and fixing device according to claim 3 or 4, wherein the axis of the first locking hole is offset by 1-5° towards the first symmetrical plane, and the second locking hole The axis of is offset by 1-5° towards the first plane of symmetry. 6. The femoral neck fracture locking and fixing device according to claim 5, wherein the first locking hole and the second locking hole are located on the upper part of the locking plate, and the third locking hole is located on the locking plate. or, the first locking hole and the second locking hole are located at the lower part of the locking plate, and the third locking hole is located at the upper part of the locking plate. 7. The femoral neck fracture locking and fixing device according to any one of claims 1-4, wherein the walls of the first locking hole, the second locking hole and the third locking hole are provided with internal threads, The rear ends of the first locking nail, the second locking nail, and the third locking nail are respectively provided with rear end external threads that match the internal thread, and the first locking nail, the second locking nail, and the third locking nail are respectively Threadedly connected with the locking plate, the front ends of the first locking nail, the second locking nail and the third locking nail are respectively provided with front-end external threads, and the front ends of the first locking nail, the second locking nail and the third locking nail are The pitch of the external thread at the rear end is smaller than the pitch of the external thread at the front end. 8. The femoral neck fracture locking and fixing device according to any one of claims 1-4, characterized in that, the first locking nail, the second locking nail and the third locking nail are all hollow nails. 9. A femoral neck fracture locking and fixing method, is characterized in that, comprises the following steps: The medial surface of the locking plate fits on the lower part of the greater trochanter of the femur; The first locking nail, the second locking nail and the third locking nail are respectively screwed in through the first locking hole, the second locking hole and the third locking hole of the locking plate, the first locking nail, the second locking nail and the third locking nail The rear end of the locking plate is connected with the locking plate, and the front ends of the first locking nail, the second locking nail and the third locking nail are all located at the center of the femoral force; A triangular pyramid structure is formed between the first locking nail, the second locking nail, the third locking nail and the locking plate. 10. femoral neck fracture locking and fixing method according to claim 9, is characterized in that, the medial surface of locking plate fits and is installed before the greater trochanter lower part, also comprises the step: Judging the angle between the fracture line and the horizontal plane, if the angle between the fracture line and the horizontal plane is greater than 45°, use a reverse product structure, the first locking hole and the second locking hole on the locking plate are located on the upper part of the locking plate, and the second locking hole on the locking plate The three locking holes are located at the lower part of the locking plate; if the angle between the fracture line and the horizontal plane is less than 45°, the genuine structure is adopted, the first locking hole and the second locking hole on the locking plate are located at the lower part of the locking plate, and the third locking hole on the locking plate The holes are located on the upper part of the locking plate.