Fixation device and method for acetabular anterior and posterior columns and quadrangular fractures

A fixation device, the technology of the square area, applied in the direction of fixator, internal bone synthesis, outer plate, etc., can solve the problems of soft tissue injury, difficult fracture reduction, limited blocking force, etc., to achieve the effect of not easy to deform and reduce traumatic arthritis

CN104644255BInactive Publication Date: 2017-01-25郭晓东
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-01-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fixation device for fractures of the anterior and posterior columns of the acetabulum and a quadrangular area and its application method. It consists of a trapezoidal main plate and a pubic accessory plate whose overall shape matches the anatomy of the medial anterior and posterior columns of the acetabulum and the quadrangular area. The upper part of the trapezoidal main plate is the arcuate edge plate located at the arcuate edge of the ilium; one side is the posterior column plate, and the posterior column plate and the arcuate edge plate intersect and bend toward the iliac fossa to extend the posterior column side arm. The lower part of the trapezoidal main board is the ischial steel plate. Between the arcuate edge plate, the posterior column plate, and the ischial plate is the quadrilateral baffle. The accessory plate of the pubic bone cooperates with the anatomical structure of the medial side of the superior pubic ramus, bends near the pubic tubercle and extends to the upper surface of the superior pubic ramus to extend the pubic side arm. A plurality of screw holes are arranged on the trapezoidal main board and the pubic sub-board. The invention can stably reduce and fix the acetabular fracture, and improve the quality of fracture reduction and internal fixation.
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Description

technical field

[0001] The invention relates to the field of orthopedic medical devices, more specifically, it relates to a fixation device for fractures of the anterior and posterior columns of the acetabulum, especially fractures of the quadrangular region. The invention also relates to the use method of the fixing device, which solves the technical problem of how to fix fractures of the anterior and posterior columns of the acetabulum, especially the quadrangular region fractures. Background technique

[0002] Acetabular comminuted fractures have always been a difficult problem in trauma orthopedic treatment. The complex blood vessels and nerve structures around the pelvis, the difficulty of exposure, and the small number of screw placement areas all bring difficulties to the anatomical reduction of periacetabular fractures. For complex acetabular fractures, due to severe violence, comminuted fractures of the anterior column or posterior column are often combined with co...

Examples

Embodiment 1

[0043] like figure 2 As shown, the fixation device for fractures of the anterior and posterior columns of the acetabulum and the quadrangular region of the present invention includes: a trapezoidal main plate 1 and a pubic subplate 2, both of which are plate-like structures with concavities and convexities of substantially the same thickness, made of medical stainless steel or titanium Alloy.

[0044] The upper base of the trapezoidal main plate 1 is a transversely arranged arcuate edge steel plate 3 . The arcuate edge steel plate 3 is an arc-shaped steel plate of equal width, which is bent to match the physiological curvature of the inner side of the arcuate edge 18 . The arcuate edge steel plate 3 is provided with holes A, B, and a first screw hole C1 from the outside to the inside; the first screw hole C1 is located at the end of the arcuate edge 18 close to the superior pubic ramus 16 . The holes A and B are combined screw holes, and the first screw hole C1 is a connect...

Embodiment 2

[0057] like image 3 As shown, the fixation device for fractures of the anterior and posterior columns of the acetabulum and quadrangular region of the present invention is installed on the hip bone. The fixation device for fractures of the anterior and posterior columns of the acetabulum and the quadrangular region includes: a trapezoidal main plate 1 and a pubic auxiliary plate 2 . Wherein, the shape of the trapezoidal main board 1 and the pubic subplate 2 matches with the quadrangular area 15 of the acetabulum and the anterior column 13, the posterior column 12, especially the physiological curvature of the inner surface of the superior pubic ramus 16 and the arcuate border 18, and does not need to be pre-prepared. It handles bending and is easy to operate.

[0058] Referring to the physiological curvature between the arcuate edge 18 and the ischium 14, the trapezoidal main board 1 is positioned on the medial surface of the acetabulum; note that the distance between the tr...