Attitude acquisition method and system for acetabulum and femoral head in artificial hip joint replacement

Abstract

The invention discloses an attitude acquisition method and system for acetabulum and femoral head in artificial hip joint replacement. Pressure sensors and / or touch sensors are arranged at concerned pressure point positions of hip joint replacement on femoral head prosthesis template, to form a sensor array; the sensor array acquires contact and stress conditions between the femoral head prosthesis template and acetabulum, and sends out signals; and a receiving terminal receives the signals, and displays on a display module, to acquire simulated attitudes of acetabulum and femoral head. The system comprises the sensor array, necessary peripheral circuits, and a signal receiving and display device for receiving and displaying signals sent from the peripheral circuits. The method and system provided by the invention can accurately simulate attitude of femoral head prosthesis in artificial hip joint replacement, so that a doctor can visually observe position and movement condition of femoral head prosthesis during operation process, to greatly improve success ratio and surgical effect of hip joint replacement.

Description

technical field [0001] The invention relates to the technical field of medical electronics, in particular to a method and a system for acquiring postures of an acetabulum and a femoral head in artificial hip replacement. Background technique [0002] Since the 1960s, artificial joint replacement has gradually developed in my country and has become a blessing for countless patients with joint diseases. Taking hip replacement as an example, the first indication is osteoarthritis, followed by aseptic necrosis of bone (such as femoral head necrosis, etc.), some hip fractures (such as femoral neck fracture), rheumatoid joint Inflammation, traumatic arthritis, benign and malignant bone tumors, ankylosing spondylitis, etc., are widely used. Coupled with today's aging population, the number of patients with osteoarthritis is on the rise, and more and more artificial joint replacement operations are performed in hospitals every year. [0003] However, there is still room for improv...

AI Technical Summary

Problems solved by technology

[0003] However, there is still room for improvement in hip replacement surgery

In today's hip replacement surgery, the process of inserting the femoral head prosthesis into the acetabulum depends entirely on the surgeon's experience. The doctor cannot intuitively see the movement of the femoral head prosthesis in the acetabulum, and cannot accurately Confirm that the femoral head prosthesis is in place in the acetabulum

If the installation position of the prosthesis is not correct during the replacement, it may lead to limited movement of the patient after surgery or dislocation of the pseudo-joint. In the light case, the long-term uneven force on the prosthesis will accelerate wear and tear, resulting in a shortened service life of the prosthesis. reduce

Generally speaking, a successful artificial hip replacement operation can provide patients with artificial hip replacement for 20 years or even longer; The service life will be sharply reduced to 7-8 years or even shorter

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