Fixing suspension device for posterior cruciate ligament avulsion fracture reduction surgery and operation method

A technique for cruciate ligaments and avulsion fractures, applied in stereotaxic surgical instruments, fixers, etc., can solve the problems of joint injuries that cannot be dealt with at the same time, slow recovery, large trauma, etc., to achieve functional exercise and fewer surgical steps , The effect of simplifying the operation steps

Inactive Publication Date: 2021-08-06
郑伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the existing open surgery, open reduction and cannulated screw internal fixation are more likely to be used for avulsion fractures with large fracture fragm

Method used

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  • Fixing suspension device for posterior cruciate ligament avulsion fracture reduction surgery and operation method
  • Fixing suspension device for posterior cruciate ligament avulsion fracture reduction surgery and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Embodiment 1: For the treatment of large bone block avulsion: two tunnels are made, and the arthroscopic posteromedial approach is used to treat patients with large avulsion fragments of the posterior ligament tibial insertion. Double tunnels are made during the operation, passing through the bone The bone block is fixed with two suspended titanium plates, which can provide multi-point stability and better compressive stress for the fracture end, prevent bone block displacement, and enable early functional exercise to promote functional recovery. Compared with open surgery: less trauma, no damage to muscles and joint capsules, blood vessel, nerve injury, poor incision healing, thrombosis and other complications are greatly reduced; compared with other arthroscopic surgery methods: more reliable fixation, less operation steps, It is easier to master, greatly reduces complications such as joint stiffness, nerve and blood vessel damage, and can be used for early rehabilitati...

Embodiment 2

[0028] Example 2: Obstacles inside: The patient had a tibial fracture half a year ago and was treated with intramedullary nail fixation; he was injured again today, and was clearly diagnosed as an avulsion fracture of the tibial insertion of the posterior cruciate ligament with displacement, and the intramedullary nail could not be removed. We gave 3D CT examination before operation, and customized 3D printing model, and computer measured and made bone tunnel to avoid obstacles. During the operation, we strictly followed the preoperative 3D printing model, and the operation went very smoothly. If open surgery is performed in this case, without the aid of a locator, the operation cannot be accurately avoided, and the operation is difficult to implement; if other methods such as arthroscopic suture are performed, more than double the tunnel needs to be made, and the difficulty of the operation will be greatly increased. The error may encounter obstacles, and the rehabilitation ex...

Embodiment 3

[0029] Example 3: The patient has an avulsion fracture of the tibial insertion of the posterior cruciate ligament combined with a rupture of the anterior cruciate ligament, and requires ligament reconstruction surgery. Compared with open surgery: currently no one has undergone open surgery for anterior cruciate ligament reconstruction in the mainstream, due to the trauma of open surgery Huge, poor post-op recovery. Compared with other arthroscopic techniques: this surgical method only needs to make a single tunnel when fixing the avulsed bone fragment (two or more tunnels are required for suture fixation), which significantly reduces the cross conflict with the tunnel made by the anterior cruciate ligament reconstruction surgery Risk, because this method is firmly fixed, rehabilitation exercises can be performed early after the operation, and the joint function can be recovered well.

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Abstract

The invention discloses a fixing suspension device for a posterior cruciate ligament avulsion fracture reduction surgery and an operation method. a) Knee joint cavity posterior mediastinal tissues and avulsion bone block surrounding fascia tissues need to be cleaned in the surgery to facilitate fracture exposure and reduction in the surgery; b) after avulsion bone block reduction, an ACL reconstruction dead point positioner needs to be used for holding, a 4.5 mm positioning rod needs to drill out from the middle part of a bone block, a PDS wire is introduced along the inside of the positioning rod, and the additional use of a wire feeding device is not needed; and c) during fixation, a wire ring is forcibly tensioned at a knee bending position of about 90 degrees and is extruded and fixed, so that the posterior cruciate ligament is in the most relaxed state, a fracture block and a bone bed can keep tight fit to maintain stable reduction of the bone block. The operation steps are few, the operation is simple and easy to implement, fracture reduction and fixation are firm and reliable, when the joint moves, the fracture end can slightly move, the BO principle of fracture healing is met, and fracture healing is facilitated, rehabilitation exercises can be performed as soon as possible to recover the joint function.

Description

technical field [0001] The invention relates to the field of orthopedic medical technology, in particular to a fixation and suspension device and an operation method for the reduction operation of posterior cruciate ligament avulsion fracture. Background technique [0002] Avulsion fracture of posterior cruciate ligament (PCL) tibial insertion is a special type of PCL injury, which leads to PCL failure and joint instability after fracture. Therefore, surgery is recommended for displaced fractures. The previous treatment was based on open reduction and internal fixation. Although the surgical effect was positive, but because the main nerves and blood vessels at the back of the knee were adjacent to the fracture site, the exposure of the fracture site was limited during the surgical incision, and there was a risk of damage to blood vessels and nerves during the operation. In the prior art of tibial insertion avulsion fracture, a variety of surgical treatment methods have achi...

Claims

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Application Information

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IPC IPC(8): A61B17/88A61B90/14
CPCA61B17/8866A61B90/14
Inventor 郑伟郑好郑小川袁峰刘秀财唐先业闫志凌刘启睿张雷
Owner 郑伟
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