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Positioning method for patella tunnel in inner patellofemoral ligament reconstruction

A technique for ligament reconstruction and positioning, which is applied in surgery, bone drill guidance, computer-aided planning/modeling, etc., can solve the problems of difficult positioning of the patellar tunnel, reduce the incidence of patellar fracture complications, and reduce patellar shaking , to avoid the effect of bone tunnel deviation

Pending Publication Date: 2022-04-08
北京德尔康尼骨科医院有限公司
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Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a method for positioning the patellar tunnel in the reconstruction of the medial patellofemoral ligament to solve the problem of difficult positioning of the patellar tunnel in the prior art

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  • Positioning method for patella tunnel in inner patellofemoral ligament reconstruction
  • Positioning method for patella tunnel in inner patellofemoral ligament reconstruction
  • Positioning method for patella tunnel in inner patellofemoral ligament reconstruction

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Embodiment 1

[0029] like figure 1 and figure 2 As shown, the embodiment of the present invention provides a method for positioning the patellar tunnel in medial patellofemoral ligament reconstruction, including:

[0030] S1. Before the reconstruction of the medial patellofemoral ligament, measure the distance between the upper and lower poles of the patient's patella through imaging data, and use mimics 3D software to model, and draw up the ideal patellar tunnel length, entrance and exit positions, and patella equatorial clip angle data;

[0031] S2. After determining the various data, during the reconstruction of the medial patellofemoral ligament, measure the distance between the upper pole and the lower pole of the patella through an auxiliary instrument with a distance scale mark;

[0032] S3. Calculate and determine the middle and upper 1 / 3 points of the inner border of the patella according to the measured distance between the upper and lower poles of the patella, and mark the pos...

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Abstract

The embodiment of the invention discloses a patella tunnel positioning method used in a medial patellofemoral ligament reconstruction operation, which comprises the following steps of: in the medial patellofemoral ligament reconstruction operation, measuring a distance value between an upper pole and a lower pole of a patella through an auxiliary instrument with a distance scale mark, and according to the measured distance value between the upper pole and the lower pole of the patella, positioning a patella tunnel according to the distance value between the upper pole and the lower pole of the patella. Calculating and determining the middle upper 1 / 3 point of the inner side edge of the patella, marking the position of the middle upper 1 / 3 point of the inner side edge of the patella, determining the entrance of the patella tunnel by using the middle upper 1 / 3 point of the inner side edge of the patella through an auxiliary instrument with angle scale marks according to the marked position, and determining the exit of the patella tunnel on the surface of the patella by using a positioner according to the prepared patella equatorial included angle. After the patella tunnel direction and the entrance and exit position are confirmed, the patella tunnel is established through a drill bit in cooperation with an auxiliary instrument. The patella bone tunnel positioning device can accurately position the patella bone tunnel in an operation, the patella bone tunnel can be positioned through a minimally invasive incision, and the problems of bone tunnel deviation and the like are solved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of medical aids, and in particular to a method for positioning the patellar tunnel in the reconstruction of the medial patellofemoral ligament. Background technique [0002] At present, there is no effective clinical method or device for patellar tunnel positioning. In some obese patients or in the acute stage of injury, due to soft tissue swelling around the knee joint, it is difficult to locate the middle and upper third of the medial border of the patella through a minimally invasive incision, making the patellar tunnel Pinpointing is more difficult. Some studies have found that due to the anterior positioning of the patellar tunnel during surgery and the excessive angle, the incidence of postoperative patella fractures increases, forcing some scholars to use oblique bone tunnels with smaller diameters in order to reduce the incidence of postoperative patella fractures. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16A61B17/17A61B34/10
Inventor 陈昊张有磊甄志雷张柏青孙宝亭潘文琦邢朝辉贾斌
Owner 北京德尔康尼骨科医院有限公司
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