Method for predicting pelvis sagittal position balance state after hip replacement

Abstract

The invention relates to a method for predicting a pelvis sagittal position balance state after hip replacement. The method comprises the following steps of 1) obtaining whole body sagittal position posture evaluation imaging data of a patient in different body positions before operation, and obtaining fixed flexion deformity information of hip joints on two sides of the patient and a function evaluation result of hip extension muscle groups through physical examination; 2) performing posture analysis on the obtained whole body sagittal position posture evaluation imaging data in different body positions to obtain analysis results of a sagittal position imbalance degree before the operation and an external deformity severity degree of the hip joints of the patient; and 3) according to theanalysis results of the sagittal position imbalance degree before the operation and the external deformity severity degree of the hip joints of the patient and the function evaluation result of the hip extension muscle groups, predicting a pelvis posture rebalance state on a sagittal plane of the patient after the hip replacement. The method can be widely applied to the field of pelvis sagittal position balance state prediction after the hip replacement.

Description

technical field

[0001] The invention relates to a method for predicting the sagittal balance state of the pelvis, in particular to a method for predicting the sagittal balance state of the pelvis after hip joint replacement. Background technique

[0002] The sagittal posture has a significant impact on the retroverted pelvic posture after artificial hip joint surgery, and the latter determines the functional direction of the acetabular cup prosthesis and is closely related to complications such as impact, stress concentration, prosthesis wear, and joint dislocation. When the traditional method is used to assess the patient's sagittal posture before surgery, the following problems are likely to arise:

[0003] 1) For patients with sagittal imbalance, it is impossible to quantitatively predict the postoperative sagittal balance and pelvic posture;

[0004] 2) Unable to quantitatively predict the spatial position of the postoperative acetabular cup;

[0005] 3) It is difficul...