A surgical method for reduction and fixation of posterior cruciate ligament tibial insertion avulsion fractures under ultrasound guidance
By planning the surgical path under ultrasound guidance and using tools such as guide needles and cannulas, the problem of minimally invasive reduction and fixation of posterior cruciate ligament tibial avulsion fractures has been solved, achieving simple and safe fracture treatment that is suitable for various medical institutions.
Patent Information
- Application Number
- CN202610872181.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-24
AI Technical Summary
Existing techniques for treating posterior cruciate ligament tibial avulsion fractures are difficult to achieve minimally invasive, safe, and widely applicable reduction and fixation, especially in primary healthcare institutions where there are problems such as high operational difficulty and high risk of vascular and nerve damage.
Ultrasound-guided fracture information acquisition and surgical path planning are employed. Guide needles and cannulas are used for positioning, and Kirschner wires are used for temporary fixation. A bone tunnel is opened and sutures are inserted for fixation, avoiding extensive soft tissue dissection and reducing incision and surgical time.
It achieves simple, precise reduction and reliable fixation of fracture fragments, reduces surgical trauma, shortens recovery time, and is suitable for medical institutions with different technical levels.
Smart Images
Figure CN122440311A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fracture reduction and fixation technology, and in particular to a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fractures under ultrasound guidance. Background Technology
[0002] The posterior cruciate ligament (PCL) is a crucial structure for maintaining posterior and rotational stability of the knee joint. It originates from the lateral wall of the medial femoral condyle and inserts into the bony insertion region posterior to the tibial plateau, playing a key role in limiting posterior tibial displacement and maintaining the biomechanical stability of the knee joint. Avulsion fractures of the tibial insertion region of the PCL are prone to occur under high-energy injuries such as bicycle accidents, strenuous activities like skiing, falls from heights, and sudden knee torsion. These injuries are often accompanied by posterior knee pain, swelling, limited range of motion, and posterior instability, and in severe cases, difficulty bearing weight on the lower limb. Inadequate reduction and fixation of the fracture fragments, poor anatomical alignment, or improper rehabilitation can further lead to nonunion, chronic knee instability, traumatic osteoarthritis, joint stiffness, and severely impaired motor function, significantly impacting the patient's quality of life.
[0003] Currently, treatment options for posterior cruciate ligament (PCL) tibial insertion avulsion fractures mainly include conservative treatment, traditional open fixation surgery, and arthroscopic minimally invasive surgery. Conservative treatment is primarily suitable for patients with minimal fracture displacement or good stability, and fracture healing can generally be achieved through plaster cast or brace immobilization combined with rehabilitation training. However, due to the continuous traction of the PCL, poor postoperative rehabilitation compliance, and individual differences, conservative treatment is prone to secondary fracture displacement, joint adhesions, stiffness, and poor functional recovery. For fractures with displacement and surgical indications, traditional open fixation surgery typically involves a large incision on the posterior aspect of the knee joint to expose the fracture area, and fixation of the fracture fragments is achieved using instruments such as cannulated screws, plates, or anchors. Although open surgery can provide better exposure of the surgical area, it has disadvantages such as long surgical incision, large area of soft tissue dissection, obvious postoperative scarring, and long recovery period. More importantly, the popliteal artery and vein, tibial nerve and common peroneal nerve are adjacent to the posterior part of the knee joint. Open surgery has a very high risk of iatrogenic vascular and nerve injury during the exposure process and intraoperative traction.
[0004] In recent years, with the development of sports medicine, arthroscopic-assisted minimally invasive reduction and fixation has gradually become one of the main methods for minimally invasive treatment of this type of fracture. Although arthroscopic surgery has the advantage of minimal trauma, the posterior cruciate ligament tibial insertion area is anatomically deep, with narrow posterior operating space, and is in a "relative blind spot" of the arthroscopic field of view. This makes endoscopic exposure and reduction extremely difficult, with a high technical threshold, strong reliance on the surgeon's experience, and a long learning curve. At the same time, arthroscopic surgery is highly dependent on expensive specialized equipment and the operating experience of senior specialists, making it impossible to promote and popularize in primary care or technically limited medical institutions.
[0005] Existing treatment techniques present a contradiction between "minimally invasiveness," "safety," and "accessibility," making it difficult to achieve both simultaneously. Therefore, there is an urgent need for a technique for reducing and fixing posterior cruciate ligament tibial avulsion fractures that is easy to operate, safe and minimally invasive, accurately positioned, reliably fixed, and applicable to medical institutions with varying technical capabilities, in order to address the shortcomings of existing techniques. Summary of the Invention
[0006] In view of this, and to solve the above problems, the purpose of this invention is to provide a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fractures under ultrasound guidance, comprising: Step S1: Obtain the patient's fracture information through an ultrasound positioning device, wherein the fracture information includes at least the location information of a fracture fragment; Step S2: Plan the surgical path based on the fracture information, the surgical path extending from the patient's body surface to the fracture fragments; Step S3: Insert a guide needle along the surgical path, with the distal end of the guide needle positioned close to the fracture fragment; Step S4: Insert a cannula device along the guide needle. The distal end of the cannula device extends to a position close to the fracture fragment. A working channel is formed inside the cannula device, and the guide needle is housed in the working channel. Step S5: Perform a repositioning operation on the fractured bone fragment; Step S6, whereby at least one Kirschner wire passes through the working channel and temporarily positions the fracture fragment; Step S7: Using a drilling device, at least two bone tunnels are opened in the main bone adjacent to the fracture fragment; Step S8, such that at least one suture passes through at least two of the bone tunnels; Step S9, which fixes the two ends of the suture together.
[0007] In another preferred embodiment, the fracture information further includes: sensitive area information, the sensitive area information including the location information of at least one sensitive area, and the surgical path is offset from the sensitive area.
[0008] In another preferred embodiment, step S3 further includes: monitoring the position of the guide needle using the ultrasonic positioning device and acquiring the position information of the guide needle in real time.
[0009] In another preferred embodiment, the cannula device includes a primary cannula, a secondary cannula, and a tertiary cannula, which are connected in sequence. The primary cannula is positioned close to the patient's body surface, and the tertiary cannula is positioned close to the fracture fragment.
[0010] In another preferred embodiment, step S4 further includes locking the position of the cannula relative to the patient.
[0011] In another preferred embodiment, step S5 includes: applying force directly to the fracture fragment via a reduction hook, and / or applying force to the patient's body surface to perform the reduction operation on the fracture fragment.
[0012] In another preferred embodiment, the drilling device has at least one hollow drill bit.
[0013] In another preferred embodiment, step S3 further includes making an incision at the puncture point formed by the guide needle on the patient's body surface.
[0014] In another preferred embodiment, the method further includes: step S10, acquiring at least the location information of the fracture fragments using the ultrasound positioning device.
[0015] In another preferred embodiment, the procedure further includes step S11, removing the guide needle, the Kirschner wire, the cannula device, and closing the surgical path.
[0016] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: By applying this invention, a surgical method suitable for reducing fracture fragments after a fracture is provided, especially suitable for the reduction and treatment of posterior cruciate ligament tibial avulsion fractures. With the assistance of an ultrasound positioning device, this surgical method is simple to operate, accurate in positioning, and reliable in fixation, which greatly reduces the operation time and produces a small incision, which is conducive to the patient's rapid recovery. Attached Figure Description
[0017] Figure 1 This is a schematic diagram illustrating the fracture information acquisition in a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention. Figure 2This is a schematic diagram of the guide needle and cannula device used in a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention. Figure 3 This is a schematic diagram of fracture fragment reduction in a surgical method for reducing and fixing posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention. Figure 4 This is a schematic diagram of the bone tunnel opening in a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention. Figure 5 This is a schematic diagram of suture placement in a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention. Figure 6 This is a schematic diagram of the cannula device used in a surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance, according to the present invention.
[0018] In the attached image: 1. Body; 11. Main bone; 12. Fracture fragment; 2. Surgical path; 13. Body surface; 3. Guide pin; 4. Cannula device; 41. Working channel; 5. Kirschner wire; 6. Drilling device; 14. Bone tunnel; 15. Sensitive area; 42. Primary cannula; 43. Secondary cannula; 44. Tertiary cannula; 7. Reduction hook; 61. Hollow drill bit; 16. Incision; 45. Fixation device; 8. Suture; 9. Ultrasonic positioning device. Detailed Implementation
[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.
[0021] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".
[0022] like Figures 1 to 5The illustration shows a preferred embodiment of a surgical method for fracture reduction and fixation, particularly suitable for the reduction and treatment of posterior cruciate ligament tibial avulsion fractures. Further, this surgical method allows the fracture fragment 12 to be reduced to the associated main bone 11. The fracture fragment 12 can be considered as being formed by detachment from the main bone 11, and a corresponding bone bed is formed on the surface of the main bone 11 due to the detachment of the fracture fragment 12. After reduction and fixation, the fracture fragment 12 is accurately and stably fixed to the bone bed of the main bone 11.
[0023] The above-mentioned surgery includes: Step S1, obtaining the patient's fracture information through an ultrasound positioning device 9, the fracture information including at least the location information of a fracture fragment 12; Step S2, planning a surgical path 2 based on the fracture information, the surgical path 2 extending from the patient's body surface 13 to the fracture fragment 12; Step S3, inserting a guide needle 3 along the surgical path 2, the distal end of the guide needle 3 being positioned close to the fracture fragment 12; Step S4, inserting a cannula device 4 along the guide needle 3, the distal end of the cannula device 4 extending close to the fracture fragment 12, a working channel 41 forming within the cannula device 4, the guide needle 3 being housed within the working channel 41, the working channel 41 being used for subsequent steps. Step S5: The fracture fragment 12 is repositioned so that it is moved onto the bone bed of the main bone 11. Step S6: At least one Kirschner wire 5 passes through the working channel 41 and temporarily positions the fracture fragment 12. This temporary positioning is achieved by the Kirschner wire 5 being embedded in the main bone 11 after passing through the fracture fragment 12, so as to temporarily fix the position of the fracture fragment 12 after repositioning. Step S7: At least two bone tunnels 14 are drilled through the main bone 11 adjacent to the fracture fragment 12 using a drilling device 6. Step S8: At least one suture 8 passes through the at least two bone tunnels 14. Step S9: The two ends of the suture 8 are fixed to each other.
[0024] Furthermore, as a preferred embodiment, before performing the above-mentioned surgical method, the relevant medical personnel should preferably position the patient in a prone or floating position, and flex the affected knee joint to 30° to 90°, so as to fully expose the posterior area of the patient's knee joint.
[0025] Furthermore, as a preferred embodiment, when the above-described surgical method is applied to the reduction treatment of posterior cruciate ligament tibial insertion fracture, the ultrasound positioning device 9 is used to perform ultrasound exploration of the posterior cruciate ligament insertion area behind the knee joint of the patient's body 1; wherein, the ultrasound positioning device 9 has at least one ultrasound probe and an ultrasound image display component, so as to facilitate handheld use and ultrasound image reading by medical personnel.
[0026] Furthermore, as a preferred embodiment, the main bone described above is preferably the tibial plateau.
[0027] Furthermore, as a preferred embodiment, the position information of the fracture fragment 12, in addition to its position relative to the main bone 11, can also preferably obtain the shape information of the fracture fragment 12, which is beneficial to determine the direction of movement of the fracture fragment 12, thereby combining relevant information to lay the foundation for subsequent surgical path planning 2.
[0028] Furthermore, as a preferred embodiment, in step S1, the fracture information further includes: sensitive area information, which includes the location information of at least one sensitive area 15, and the surgical path 2 is offset from the sensitive area 15. Further, the sensitive area 15 preferably includes: the popliteal artery, and / or popliteal vein, and / or surrounding nerve structures, and / or other surrounding soft tissue structures located near the posterior cruciate ligament insertion area behind the knee joint.
[0029] Furthermore, as a preferred embodiment, in step S2, the planning of surgical path 2 should at least avoid the aforementioned sensitive area 15. The specific planning of surgical path 2 can be combined with the relevant experience of medical staff, and preferably it can also be supplemented by CT three-dimensional reconstruction technology and / or MRI image fusion technology, so as to make considerable pre-planning of surgical path 2.
[0030] Furthermore, as a preferred embodiment, step S3 further includes making an incision 16 at the puncture point formed by the guide needle 3 on the patient's body surface 13. Further, the incision 16 is made with a scalpel at a location on the patient's body 1 near the fracture fragment 12, and this incision 16 serves as the starting point of the aforementioned surgical path 2.
[0031] Furthermore, as a preferred embodiment, the incision 16 preferably extends along the surface of the patient's body 1 with a length of 0.5 cm to 2.0 cm.
[0032] Furthermore, in a preferred embodiment, step S3 further includes: monitoring the position of the guide needle 3 using the ultrasound positioning device 9 and acquiring the position information of the guide needle 3 in real time. Further, the guide needle 3 is provided with corresponding ultrasound imaging marks to facilitate the acquisition of its position information by the ultrasound positioning device 9; in this surgical method, the ultrasound positioning device 9 participates not only in acquiring the patient's fracture information but also in acquiring the position information of the guide needle 3, thereby ensuring that the insertion of the guide needle 3 and the subsequent cannula device 4 will not cause significant damage to the patient.
[0033] like Figure 6As shown, further, in a preferred embodiment, the cannula device 4 includes: a primary cannula 42, a secondary cannula 43, and a tertiary cannula 44, which are connected sequentially. The primary cannula 42 is positioned close to the patient's body surface 13, and the tertiary cannula 44 is positioned close to the fracture fragment 12. Furthermore, the sequential arrangement of the primary cannula 42, secondary cannula 43, and tertiary cannula 44 allows for insertion from superficial to deep along the extension direction of the surgical path 2. The internal regions of the primary cannula 42, secondary cannula 43, and tertiary cannula 44 together form the aforementioned working channel 41.
[0034] Furthermore, as a preferred embodiment, the primary cannula 42, secondary cannula 43, and tertiary cannula 44 preferably have similar dimensions so that they are arranged sequentially on the surgical path 2, and are connected by threads or other clamps; or, the primary cannula 42, secondary cannula 43, and tertiary cannula 44 can be sequentially sleeved from the outside to the inside, that is, the radial dimensions of the primary cannula 42, secondary cannula 43, and tertiary cannula 44 decrease sequentially. After the primary cannula 42 is placed into the incision 16, the secondary cannula 43 and tertiary cannula 44 are sequentially advanced toward the fracture fragment 12, thereby ensuring the stepwise formation of the working channel 41 and reducing damage inside the patient's body surface 13, especially avoiding large-scale soft tissue dissection, reducing the length of the incision 16, and facilitating the patient's postoperative recovery.
[0035] Furthermore, as a preferred embodiment, when the primary sleeve 42, secondary sleeve 43, and tertiary sleeve 44 are connected, when the primary sleeve 42, secondary sleeve 43, and tertiary sleeve 44 are fully extended, a certain frictional resistance can be formed between the inner and outer joint positions of the primary sleeve 42 and the secondary sleeve 43, and between the inner and outer joint positions of the secondary sleeve 43 and the tertiary sleeve 44. This frictional resistance is sufficient to prevent the secondary sleeve 43 and the tertiary sleeve 44 from retracting.
[0036] Furthermore, as a preferred embodiment, the distal end of the tertiary cannula 44 is passivated to avoid causing excessive damage to the patient's soft tissue.
[0037] Furthermore, in a preferred embodiment, step S4 further includes locking the position of the cannula device 4 relative to the patient. Furthermore, by locking the position, the cannula device 4 is prevented from shifting, loosening, or rotating.
[0038] Furthermore, as a preferred embodiment, step S4 also includes the use of a fixing device 45. One end of the fixing device 45 is detachably connected to the proximal end of the cannula device 4, and the other end of the fixing device 45 can be attached to the operating table or the patient's body 1. Further, one end of the fixing device 45 can be fixed to the cannula device 4 by a clamp or other clamping method, and the other end of the fixing device 45 can be fixed to the operating table by other fasteners or to other non-surgical areas of the patient's body 1 by other clamps, such as the patient's thigh.
[0039] Furthermore, as a preferred embodiment, the fixing device 45 is preferably connected to the primary sleeve 42.
[0040] Furthermore, as a preferred embodiment, step S5 includes: applying force directly to the fracture fragment 12 through a reduction hook 7, and / or applying force to the patient's body surface 13 to perform a reduction operation on the fracture fragment 12. Further, medical personnel apply force to move the fracture fragment 12 using the reduction hook 7 through prying, lifting, and pushing actions; in cases where the displacement of the fracture fragment 12 is simple, medical personnel can manually apply force to the patient's body 1 based on orthopedic experience, thereby indirectly promoting the reduction of the fracture fragment 12.
[0041] Furthermore, as a preferred embodiment, the repositioning hook 7 can also be monitored in real time by the ultrasonic positioning device 9 during the repositioning operation to ensure the accuracy of the repositioning position of the fracture fragment 12; wherein, the repositioning hook 7 can also be provided with corresponding ultrasonic imaging marks, and the repositioning hook 7 includes a handle for easy handling and a hook structure provided at one end of the handle, the hook structure being used for direct contact with the fracture fragment 12.
[0042] Furthermore, as a preferred embodiment, the aforementioned guide needle 3, and / or Kirschner wire 5, and / or cannula device 4, and / or reset hook 7 may also be provided with corresponding scale markings to facilitate medical personnel in making simple judgments on the movement distance of the corresponding components.
[0043] Furthermore, as a preferred embodiment, the suture 8 is preferably a high-strength suture 8, which can be guided by a corresponding wire for its movement; specifically, the suture 8 preferably inserts one end into one bone tunnel 14 first, and then inserts the other end into another bone tunnel 14. The insertion directions of the two ends of the suture 8 are preferably parallel and in the same direction. The length of the suture 8 is at least such that after it passes through the two bone tunnels 14 at both ends, it leaves enough length to facilitate subsequent knotting and fixation. In step S9, the high-strength suture 8 preferably forms pressure on the surface of the fracture fragment 12 away from the bone bed after passing through the bone tunnel 14, and the end of the high-strength suture 8 completes tension fixation on the anterior side of the main bone, preferably on the anterior side of the tibia, so that the two ends of the suture 8 are connected to form a complete loop.
[0044] Furthermore, as a preferred embodiment, the relative fixation of the two ends of the thread 8 can be achieved by directly knotting or by using a button plate or other thread 8 anchor devices.
[0045] Furthermore, as a preferred embodiment, after fixation is completed, the suture 8 preferably forms a cross shape, a grid shape, or other mesh structure on the outer surface of the fracture fragment 12. Furthermore, by forming a cross-fixation at the surface of the fracture fragment 12 with the suture 8, stress is dispersed, and the risk of secondary displacement is reduced.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the implementation and protection scope of the present invention.
[0047] In addition to the above, the present invention also has the following embodiments: In a further embodiment of the present invention, for the problem of large fracture fragments 12 (e.g., width greater than 15 mm) or comminuted fractures, 4 to 6 bone tunnels 14 can be established in step S7 to arrange a single suture 8 or multiple sutures 8, thereby forming a more complex restraint on the fracture fragments 12.
[0048] In a further embodiment of the present invention, preferably, a plurality of bone tunnels 14 are arranged sequentially around the periphery of the fracture fragment 12 at the bone bed of the main bone 11, with the fracture fragment 12 as the center; preferably, at least one bone tunnel 14 is opened at the upper, lower, left, and right positions of the fracture fragment 12; or when the fracture fragment 12 is large enough, that is, when drilling will not cause further damage to the fracture fragment 12, it can be considered that the bone tunnels 14 no longer surround the periphery of the fracture fragment 12, but are opened directly from the surface of the fracture fragment 12 toward the main bone 11, so that the drilling device 6 directly drills on the surface of the fracture fragment 12 away from the main bone 11, so that the bone tunnels 14 are arranged sequentially through the fracture fragment 12 and the main bone 11.
[0049] In a further embodiment of the present invention, the bone tunnel 14 established in step S7 preferably penetrates at least the front and back of the main bone 11, that is, the front and back cortical bone of the tibial plateau, and the extension direction of the bone tunnel 14 is preferably parallel to the extension direction of the guide pin 3.
[0050] Furthermore, as a preferred embodiment, the drilling device 6 has at least one hollow drill bit 61. Further, in step S7, after selecting the starting point of the bone tunnel 14, a guide pin is first inserted at that starting point. The hollow drill bit 61 has a hollow channel inside, allowing it to be fitted onto the guide pin. Then, the hollow drill bit 61 drills along the guide pin to open the bone tunnel 14. After the bone tunnel 14 is opened, the guide pin can be directly pulled out. The insertion path of the guide pin can be pre-planned in step S2, and the insertion process can be monitored by the ultrasonic positioning device 9.
[0051] In a further embodiment of the present invention, the method further includes: step S10, acquiring at least the positional information of the fracture fragment 12 using the ultrasound positioning device 9. Furthermore, relevant medical personnel reconfirm the position of the fracture fragment 12 using the ultrasound positioning device 9 to ensure accurate repositioning of the fracture fragment 12; if the position of the fracture fragment 12 is found to be inaccurate in step S10, the other steps above should be checked and additional adjustments considered.
[0052] In a further embodiment of the present invention, step S10 may also use the ultrasound positioning device 9 to confirm the recovery of the posterior cruciate ligament tension, the fixation status of the suture 8, and the status of active bleeding.
[0053] In a further embodiment of the present invention, the method further includes: step S11, removing the guide needle 3, Kirschner wire 5, and cannula device 4, and closing the surgical path 2. Further, after completing the other steps above, after removing all the guide needles 3, Kirschner wires 5, and cannula device 4, the incision 16 is rinsed and closed by suturing or other means, thereby closing the surgical path 2.
[0054] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.
Claims
1. A surgical method for ultrasound-guided reduction and fixation of posterior cruciate ligament tibial avulsion fractures, characterized in that, include: Step S1: Obtain the patient's fracture information through an ultrasound positioning device, wherein the fracture information includes at least the location information of a fracture fragment; Step S2: Plan the surgical path based on the fracture information, the surgical path extending from the patient's body surface to the fracture fragments; Step S3: Insert a guide needle along the surgical path, with the distal end of the guide needle positioned close to the fracture fragment; Step S4: Insert a cannula device along the guide needle. The distal end of the cannula device extends to a position close to the fracture fragment. A working channel is formed inside the cannula device, and the guide needle is housed in the working channel. Step S5: Perform a repositioning operation on the fractured bone fragment; Step S6, whereby at least one Kirschner wire passes through the working channel and temporarily positions the fracture fragment; Step S7: Using a drilling device, at least two bone tunnels are opened in the main bone adjacent to the fracture fragment; Step S8, such that at least one suture passes through at least two of the bone tunnels; Step S9, which fixes the two ends of the suture together.
2. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, The fracture information also includes: sensitive area information, which includes the location information of at least one sensitive area, and the surgical path is staggered from the sensitive area.
3. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, Step S3 further includes: monitoring the position of the guide needle using the ultrasonic positioning device and acquiring the position information of the guide needle in real time.
4. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, The cannula device includes a primary cannula, a secondary cannula, and a tertiary cannula, which are connected in sequence. The primary cannula is positioned close to the patient's body surface, and the tertiary cannula is positioned close to the fracture fragment.
5. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, Step S4 further includes locking the position of the cannula relative to the patient.
6. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, Step S5 includes: applying force directly to the fracture fragment using a reduction hook, and / or applying force to the patient's body surface to perform the reduction operation on the fracture fragment.
7. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, The drilling device has at least one hollow drill bit.
8. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, Step S3 further includes making an incision at the puncture point formed by the guide needle on the patient's body surface.
9. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, It also includes: step S10, acquiring at least the location information of the fracture fragments through the ultrasound positioning device.
10. The surgical method for reduction and fixation of posterior cruciate ligament tibial avulsion fracture under ultrasound guidance according to claim 1, characterized in that, It also includes step S11, removing the guide needle, the Kirschner wire, the cannula device, and closing the surgical path.