Correlation factors of knee joint function and construction of a prediction model for posterior meniscal root injuries after arthroscopic surgery
Objective To explore the correlation factors of knee joint function after arthroscopic surgery for posterior meniscal root injuries,and to construct a prediction model.Methods This retrospective study was con-ducted on 110 patients with posterior medial meniscus root tears admitted to our department from Jan.2019 to Sep.2023,including 62 males and 48 females aged from 22 to 73(mean 50.4)years.The knee joint function was as-sessed by Lysholm scores 7 d after surgery,and patients with a score of 0-60 were classified into the poor function group and those with a score of 61-100 into the good function group.The correlation factors of knee joint dysfunction were analyzed,and a prediction model of nomogram was constructed and verified.Results Comparison between the two groups revealed significant differences in age,body mass index(BMI),Laprade classification,surgical scope,postoperative complications,regular and professional postoperative rehabilitation training,and VAS at postoperative 6 months(all P<0.05).Further multiple logistic regression analysis showed that age>60 years,BMI≥24 kg/m2,La-prade classification,postoperative complications and VAS at postoperative 6 months were independent risk factors for knee dysfunction in patients with posterior meniscal root injuries after arthroscopic treatment,whereas regular and professional rehabilitation training was an independent protective factor(P<0.05).A nomogram model was con-structed and verified,with the area under the curve being 0.861,95%CI:0.782-0.919,sensitivity 0.816,and spe-cificity 0.833.Conclusion Age>60 years,BMI≥24 kg/m2,Laprade classification,postoperative complications,and postoperative pain scores are important risk factors that affect knee joint function after arthroscopic treatment for patients with posterior medial meniscus root tears.Regular and professional rehabilitation training may prevent knee joint dysfunction in these patients.
Posterior meniscal root injuriesArthroscopyKnee joint functionNomogram model
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