A system and method for measuring acetabular anteversion angle and abduction angle in hip arthroplasty

Abstract

The invention discloses a measurement system and method for acetabular anteversion and abduction angle in hip joint replacement. The reference module is used to describe the posture of the pelvic reference plane, including a reference base, a reference end cover, a switch, a battery and a reference circuit board; the reference base is provided with battery mounting holes, reference circuit board mounting holes, switch fixing slots and The reference end cover fixing hole position; the battery and the reference circuit board can be fixed in the base, the switch can be fixed on the side of the reference base, and the reference end cover is fixed above the reference base as the Mounting enclosure for the reference module. The invention has the advantages of low cost, good compatibility, simple installation and easy operation, and is suitable for popularization and application in various hospitals.

Description

technical field [0001] The invention relates to the technical field of medical electronics, in particular to a system and method for measuring the anteversion angle and abduction angle of the acetabulum in artificial hip joint replacement. Background technique [0002] Artificial hip replacement plays an important role in the rehabilitation and life of patients with hip dysfunction such as femoral head necrosis. In artificial hip arthroplasty, accurate measurement of the anteversion angle and abduction angle of the artificial acetabulum relative to the pelvis to reconstruct a good hip rotation center is of great significance for preventing postoperative hip joint wear and dislocation. [0003] In the current artificial hip arthroplasty, the anteversion angle and abduction angle of the artificial acetabulum are mainly determined by visual inspection based on the physician's experience, and are also affected by factors such as the difficulty in determining the pelvic posture, ...

AI Technical Summary

Problems solved by technology

The ruler measurement method is based on a specially designed reference ruler and protractor, and the device structure is relatively simple; but it can only perform static measurement of the installation angle of the artificial acetabulum, and the measurement accuracy is limited and the stability of the installation process is not guaranteed.

The bracket-guided method can improve the stability of the artificial acetabular installation by using the installation hammer guide; however, the bracket structure itself is bulky and the measurement accuracy is not high

The pelvic coronal Steiner needle method can effectively improve the accuracy of the installation angle of the artificial acetabular during operation by means of the pelvic coronal position positioning device, the Steiner needle characterization device and the angle measurement device; Inconvenience and other issues

The pelvic posture electronic measurement method includes an initial posture measurement device for determining the front plane of the pelvis, a positioning pin measurement device for determining the relative posture of the pelvis, an installation angle measurement device for determining the spatial posture of the artificial acetabulum, and a software for real-time posture calculation and processing of the pelvis and artificial acetabulum. The hardware system, with the help of wireless data transmission and computer display, can provide dynamic and visual guidance for the installation angle of the artificial acetabulum; however, the whole set of devices has practical problems such as complex system configuration, complex data processing, high performance requirements for software and hardware, and high investment costs

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