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Unicondylar osteotomy guide plate and positioning method thereof

A technology of osteotomy and guide plate, applied in the direction of bone drill guidance, medical science, surgery, etc., can solve the problems of collateral ligament and cruciate ligament injury, imperfect ligament protection measures, polyethylene liner wear, etc., to prevent femoral Valgus, Guaranteed the effect of femur shaping, and the effect of positioning

Active Publication Date: 2020-04-07
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of intraoperative and short-term postoperative polyethylene liner dislocation and long-term postoperative aseptic loosening, polyethylene liner wear, and contralateral osteoarthritis in unicompartmental joint replacement technology caused by osteotomy and insufficient installation accuracy , periprosthetic fracture risk, and collateral ligament and cruciate ligament injuries caused by imperfect ligament protection measures, computer navigation technology is often used at present, but the cost is high and the penetration rate is not high

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  • Unicondylar osteotomy guide plate and positioning method thereof
  • Unicondylar osteotomy guide plate and positioning method thereof
  • Unicondylar osteotomy guide plate and positioning method thereof

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Embodiment Construction

[0030] The unicondylar osteotomy guide plate of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. The accompanying drawings are only used to explain the present invention and should not be construed as limiting the present invention.

[0031] Figure 1A , Figure 1B , Figure 1C and Figure 1D The fitting relationship between the femur drilling guide plate 1 and the femur in the unicondylar osteotomy guide plate of the present invention has been illustrated respectively from different spatial angles, as Figure 1A to Figure 1D As shown, the femoral drilling guide plate 1 provided by the present invention has a drilling guide limiting column 6 and a drilling guiding limiting column 7, and each drilling guiding limiting column has a drilling hole suitable for passing a limiting nail.

[0032] The femoral drilling guide plate 1 also has the femoral condyle distal positioning surface 3, the intercondylar fossa p...

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Abstract

The invention relates to a unicondylar osteotomy guide plate. The unicondylar osteotomy guide plate is designed to match a cutting tool to achieve unicondylar quantitative osteotomy of a knee joint. The unicondylar osteotomy guide plate comprises a thighbone drilling guide plate and a tibia osteotomy guide plate. The thighbone drilling guide plate is provided with a femoral condyle far-end positioning surface, an intercondylar fossa positioning surface and a femoral condyle preartis positioning surface which are designed in a customized mode through CT scanning reconstruction and attached to the femoral condyle far-end, the intercondylar fossa and the femoral condyle preartis respectively. The tibia osteotomy guide plate is provided with a tibial plateau positioning surface which is designed in a customized mode through CT scanning reconstruction and attached to the front side face of a tibial plateau, a longitudinal osteotomy guide groove which is suitable for limiting the cutting tool in a longitudinal osteotomy plane longitudinally extending along the tibia, and a horizontal osteotomy limiting groove which is suitable for limiting the cutting tool in a horizontal osteotomy planewhich transversely extends along the tibia. The invention further relates to a positioning method of the unicondylar osteotomy guide plate.

Description

technical field [0001] The invention relates to a unicondylar osteotomy guide plate, which is designed to cooperate with a cutting tool to realize quantitative osteotomy of the unicondyle of the knee joint. The invention also relates to a positioning method for the unicondylar osteotomy guide plate. Background technique [0002] With the continuous progress of unicompartmental arthroplasty (UKA), the concept of rapid recovery and the concept of "knee preservation" are put forward in clinical practice, and unicompartmental arthroplasty is more and more favored by Chinese orthopedic experts. [0003] Unicompartmental arthroplasty (UKA) has the advantages of less trauma, quick recovery, bone preservation, and good joint stability. It can preserve the patient's knee to the greatest extent without destroying the original proprioception and soft tissue balance system of the patient's knee joint. Joint movement function improves the patient's satisfaction with rehabilitation treat...

Claims

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Application Information

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IPC IPC(8): A61B17/17
CPCA61B17/1732A61B17/1764
Inventor 刘培来刘念杨友
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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