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

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.

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...

AI Technical Summary

Problems solved by technology

[0004] There are many problems in the current commonly used surgical methods: difficult fracture reduction, difficulty in shaping and placing steel plates after reduction, unreliable fracture fixation, high possibility of soft tissue damage such as blood vessels and nerves, long operation time, large amount of bleeding, and many postoperative complications Wait

[0005] Patent CN201831946U discloses a pelvic acetabular quadrangular anatomical steel plate, including a long plastic steel plate and an integrated baffle, which can prevent fractures of the acetabular quadrangular region, but there is displacement of the quadrangular region fracture There are many problems such as the mechanical mismatch of the direction, the limited blocking force, and the inability to fix the front and rear columns at the same time. It is urgent to develop better internal fixation devices.

Images