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An anatomical knee joint femoral prosthesis retaining posterior cruciate ligament

A cruciate ligament and femoral prosthesis technology, applied in the field of artificial joints, can solve the problems of prosthesis interference and extrusion on soft tissues, poor proprioception of patients, low patient satisfaction, etc. The effect of avoiding the risk of failure

Pending Publication Date: 2020-09-15
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • An anatomical knee joint femoral prosthesis retaining posterior cruciate ligament
  • An anatomical knee joint femoral prosthesis retaining posterior cruciate ligament
  • An anatomical knee joint femoral prosthesis retaining posterior cruciate ligament

Examples

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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 and 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 con...

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Abstract

The invention belongs to the technical field of artificial joints, and particularly relates to an anatomical knee joint femoral prosthesis retaining a posterior cruciate ligament. The anatomical kneejoint femoral prosthesis retaining the posterior cruciate ligament comprises a medial condyle, a lateral condyle and a trochlea, the medial condyle and the lateral condyle are both in a C shape, the intercondyle gap is an intercondyle fossa, the medial condyle and the lateral condyle are connected through the trochlea, and the angle between a line connecting the lowest point of the medial condyleand the lowest point of the lateral condyle and a horizontal line is 3 degrees. According to the technical scheme, the gait of a postoperative patient is more natural, the femoral flexion degree is increased, the actions of going upstairs and downstairs, deep squatting, kneeling and the like are better facilitated, and patella bounce and anterior knee pain are reduced.

Description

technical field [0001] The invention belongs to the technical field of artificial joints, in particular to a knee femoral 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 compar...

Claims

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Application Information

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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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