ZHU Meng,HU Xue-yu,ZHAO Ting-ting,et al.Risk factors and prediction model for periprosthetic femoral fracture after total knee arthroplasty in the elderly[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2024,33(02):157-161.
ZHU Meng,HU Xue-yu,ZHAO Ting-ting,et al.Risk factors and prediction model for periprosthetic femoral fracture after total knee arthroplasty in the elderly[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2024,33(02):157-161. DOI: 10.11659/jjssx.02E023095.
Risk factors and prediction model for periprosthetic femoral fracture after total knee arthroplasty in the elderly
To investigate the risk factors of periprosthetic femoral fracture (PFF) after total knee arthroplasty (TKA) in the elderly and to construct a predictive model for the prevention of PFF after clinical operation.
Methods
2
The clinical data of 537 elderly
patients who underwent TKA in the orthopedic department of the First Affiliated Hospital of Air Medical University from October 2016 to October 2021 were retrospectively analyzed. The occurrence of PFF during the follow-up period was statistically analyzed and the clinical data were collected. Binary
Logistic
regression was used to analyze the risk factors of PFF after TKA in the elderly, and a predictive model of PFF after TKA in the elderly was constructed based on the risk factors.
Receiver operating characteristic
(
ROC
) curve and
Hosmer-Lemeshow
(
H-L
) were used to test the discrimination and calibration of prediction model.
Results
2
The patients were followed up for 12 to 72 months after discharge, with a median time of 47 months. During the follow-up period, 31 patients (5.77%) developed PFF. Age, osteoporosis, Parkinson's disease and anterior femoral notch (AFN) were the risk factors for PFF after TKA in the elderly (
P
<
0.05), and cross fixation of prosthesis and bone cement fixation were the protective factors (
P
<
0.05). The results of
H-L
test showed that the risk prediction model of PFF after TKA in the elderly had good calibration (
P
>
0.05).
ROC
curve analysis showed that the risk prediction model of PFF after TKA in the elderly has high discrimination (
area under the curve
was 0.858, 95%
CI
: 0.826 to 0.887), the sensitivity was 83.87%, the specificity was 88.34%.
Conclusion
2
The risk of PFF after TKA in the elderly is high, and prevention should be carried out according to the high risk factors. The prediction model constructed based on the high risk factors has good prediction efficiency.
关键词
全膝关节置换术股骨假体周围骨折预测模型危险因素
Keywords
total knee arthroplastyperiprosthetic femoral fractureprediction modelrisk factors
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