A comparative study of height and lower extremity length on accuracy of preoperative prediction of graft diameter in patients undergoing anterior cruciate ligament reconstruction
Objective To predict graft diameter in anterior cruciate ligament reconstruction patients using height and lower limb length,and compare the accuracy of both methods.Methods A total of 190 patients who sustained an anterior cruciate ligament injury and underwent arthroscopic single-bundle anterior cruciate ligament reconstruction using autologous hamstring tendon grafts between June 2022 and October 2023 were enrolled.The patient age,height,lower limb length,and the intraop-eratively measured graft diameter were documented.One hundred ninety patients were divided into a prediction group(n=70)and a validation group(n=120).Correlation analysis was conducted onheight,lower limb length,and graft diameter among pa-tients in the prediction group.Separate regression equations for graft diameter were calculated based on height and lower limb length.Results No statistically significant differences were observed in height,lower limb length,sex,and graft diameter be-tween the prediction and validation cohorts(P＞0.05).A strong correlation(r=0.741)was found between height and graft diam-eter in the prediction group;the predictive equation was graft diameter(mm)=4.32×Height(m)+0.38.Lower limb length also dem-onstrated a strong correlation with graft diameter(r=0.695).The predictive equation based on lower limb length was:graft diam-eter(mm)=5.53×Lower limb length(m)+2.41.Predictions of graft diameter using patient height yielded a result of(7.758±0.394)mm,whereas predictions using patient lower limb length resulted in(7.730±0.325)mm.Predictive errors,defined as the absolute difference between measured and predicted graft diameters,were(0.293±0.219)mm for height-based predictions and(0.289±0.216)mm for lower limb length-based predictions.Statistical analysis showed no significant differences in predicted(t=0.580,P=0.562)or error(t=0.161,P=0.872)values between the height and lower limb length methods for graft diameter prediction.Conclusion Height and lower limb length exhibit strong correlations with graft diameter in anterior cruciate ligament recon-struction patients,and both measurement methods provide equivalent preoperative predictive accuracy for graft diameter.
万方数据
维普
