Minimally invasive rear compression plate for intertrochanteric comminuted fracture of femur

Abstract

The invention relates to a minimally invasive rear compression plate for intertrochanteric comminuted fracture of femur. The compression plate comprises a femoral neck bone plate and a tuberosity rear side fixing plate which are connected with each other, wherein the femoral neck bone plate is of an H-shaped curved surface structure tallying with the rear side face of a femoral neck; locking holes are arranged on the four pins of the H-shaped bone plate; spherical nails penetrating through the femoral neck and a spherical head penetrate through the locking holes on the two front pins of the H-shaped bone plate; spherical nails penetrating through the femoral neck and tuberosity penetrate through the locking holes on the two rear pins of the H-shaped bone plate; the tuberosity rear side fixing plate is of an arc-shaped curved surface structure tallying with the rear side face of the tuberosity; locking holes are respectively arranged at the two ends of the tuberosity rear side fixing plate; and locking nails penetrating through the rear side of the crown head end of the tuberosity and the rear side of the crown bottom end of the tuberosity are respectively locked in the two lockingholes. The compression plate has the following beneficial effects: the spherical nails penetrate through the H-shaped bone plate and the tuberosity rear side fixing plate and the directions and angles of the spherical nails can be adjusted when the spherical nails are locked in the waist-shaped spherical slots, thus respectively realizing tensioning of the femoral neck and the spherical head, tensioning of the femoral neck and the tuberosity, tensioning of the broken bones in the femoral neck and tensioning of the broken bones of the tuberosity.

Description

technical field [0001] The invention relates to the field of orthopedic medical technology, in particular to a minimally invasive posterior compression bone plate for comminuted fractures between the femoral neck and intertrochanter. Background technique [0002] With the aging of my country's population and the linear increase of fractures in middle-aged and elderly people, relevant data show that the average life expectancy in China has reached 73 years, and the activity level of middle-aged and elderly people is gradually decreasing, which also leads to the incidence of osteoporosis in middle-aged and elderly people. One of the reasons for the gradual increase in the incidence rate, it has been reported in the literature that more than 90% of patients with hip (trochanteric and femoral neck) fractures are over 65 years old, and 3 / 4 of them are women. The traditional treatment method is mainly based on the dynamic hip, that is, the DHS pressurized sleeve goose-head nail. A...

AI Technical Summary

Problems solved by technology

The traditional treatment method is mainly based on the dynamic hip, that is, the DHS pressurized sleeve goose-head nail. Although its therapeutic effect has long been recognized, it is relatively complicated to install clinically and causes too much damage to the skeleton. The femoral neck and the ball head fixation part It is a tension nail, relatively poor in stability, and there are many product breakages in clinical applications; the tension nail only produces tension after installation, and it is difficult to achieve correct reduction during surgery, and the contact between the bone plate and the bone surface is too large. less, resulting in incorrect reset, unstable fixation, and poor therapeutic effect; the diameter of the head sleeve of the DHS sleeve goose-head nail is 13mm, and the length is 25-30mm. The goose-head nail sleeve basically blocks the medullary cavity between the trochanters, preventing the circulation of blood and bone marrow in the medullary cavity, which also affects the re-growth speed of the fracture, prolongs the healing time, and increases the pain of the patient

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