Anatomical form knee joint prosthesis with posterior cruciate ligament

A technology of knee joint prosthesis and cruciate ligament, applied in the field of knee joint prosthesis, can solve the problems of prosthesis interference and extrusion on soft tissue, poor proprioception of patients, low patient satisfaction, etc. The effect of large degree and avoiding the risk of failure

Pending Publication Date: 2020-09-04
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In view of the deficiencies in the prior art, the purpose of the present invention is to overcome the poor matching, poor practicability, low postoperative patient satisfaction, loss of motor function, and interference of the prosthesis to soft tissues caused by the existing symmetrical knee prosthesis. Extrusion and other shortcomings, as well as the existing knee joint prosthesis to overcome the limitations of flexion and extension angle caused by the removal of the posterior cruciate ligament, severe column wear, poor proprioception of the patient, unnatural gait, etc. Anatomical Knee Prosthesis Preserving the Posterior Cruciate Ligament

Method used

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  • Anatomical form knee joint prosthesis with posterior cruciate ligament
  • Anatomical form knee joint prosthesis with posterior cruciate ligament
  • Anatomical form knee joint prosthesis with posterior cruciate ligament

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Embodiment Construction

[0099] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0100] An anatomical knee joint prosthesis, including femoral condyle 1, tibial plateau pad 2 and tibial plateau rest 3, see figure 2 with image 3 , is the structural diagram of the femoral condyle 1, tibial plateau pad 2 and tibial plateau support 3 when the femur is horizontal, the femoral condyle 1 is a "C" shape with a detachable support 14 in the middle from the side view, and the starting end of the "C" shape The slope of the position is the anterior condyle, and the thickness of the anterior condyle gradually becomes thinner toward the proximal end. The posterior condyle is located at the end of the "C" shape, and the distal end of the femur is located at the opposite side of the "C"-shaped opening. The outer surface of the "C" shape for smooth.

[0101] Viewed from the front, the left side is the medial condyle 11, the right side is the lateral co...

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Abstract

The invention belongs to the technical field of artificial joints, and particularly relates to a knee joint prosthesis with a posterior cruciate ligament. The anatomical form knee joint prosthesis with the posterior cruciate ligament comprises a femoral condyle and a tibial plateau pad, wherein the femoral condyle comprises entocondyle, lateral condyle and blocks, the entocondyle and the lateral condyle both are in the shape of C, and the intercondylar void is intercondylar fossa. The entocondyle and the lateral condyle are connected through the blocks, an inclined angle of the connecting lineof the lowest point of the entocondyle and the lowest point of the lateral condyle and the horizontal line is 3 degrees, and the tibial plateau pad comprises an entocondyle pit and a lateral condylepit to accommodate the entocondyle and the lateral condyle. According to the technical scheme, the pace of a postoperative patient is natural, the bending degree of the femoral condyle is increased, actions of going up and down stairs, deep squating, kneeling posture and the like are facilitated, and kneecap clicking and anterior knee pain can be reduced.

Description

technical field [0001] The invention belongs to the technical field of artificial joints, in particular to a knee joint prosthesis with posterior cruciate ligament preserved. Background technique [0002] Concepts and Terminology [0003] In order to correctly describe the shape, position and interrelationship of the human body structure, the present invention uses anatomical posture and orientation terms. [0004] Anatomical posture: body upright, eyes looking straight ahead; feet standing side by side, toes facing forward; upper limbs hanging on both sides of the torso, palms facing forward, thumbs on the outside. [0005] Up and down: head above, feet below. The limbs use proximal and distal to describe the relationship between parts, that is, the root close to the trunk is proximal, and the relatively far or terminal part is distal. [0006] Front and back: The front is the one leaning on the belly of the body, and the back is the one leaning on the back. In comparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/389A61F2/3859A61F2/3886A61F2002/30528A61F2002/30476
Inventor 解凤宝史春宝韩川
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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