System and method for measuring acetabular anteversion angle and abduction angle in hip replacement

Abstract

The invention discloses a system and a method for measuring an acetabular anteversion angle and an abduction angle in hip replacement. The system comprises a gypsum binding belt, a reference module, a measuring module, a display module and a hip replacement surgical instrument, wherein the reference module is used for describing the posture of a pelvis reference surface and comprises a reference base, a reference end cover, a switch, a battery and a reference circuit board; a battery mounting hole site, a reference circuit board mounting hole site, a switch fixing groove and a reference end cover fixing hole site are arranged in the reference base; 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 to serve as a mounting shell of the reference module. The system has the advantages of low cost, good compatibility, simplicity in installation and convenience in 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 acetabular anteversion angle and abduction angle in artificial hip joint replacement. Background technique [0002] Artificial hip replacement plays an important role in the rehabilitation and life of patients with hip joint dysfunction such as necrosis of the femoral head. In artificial hip replacement, it is of great significance to accurately measure the anteversion and abduction angles of the artificial acetabulum relative to the pelvic installation to reconstruct a good hip joint rotation center and prevent postoperative hip joint wear and dislocation. [0003] In the current artificial hip replacement surgery, the anteversion and abduction angles of the artificial acetabular installation are mainly determined by visual inspection based on the experience of physicians. At the same time, they are affected by factors such as diffic...

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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