Objective To compare the clinical outcomes of anterior cruciate ligament(ACL)rupture by arthroscopic ACL reconstruction with or without remnant preservation.Methods This prospective study was con-ducted on 80 patients with traumatic ACL rupture admitted to Tangshan Second Hospital from Jan.2020 to Jan.2022,including 46 males and 34 females aged 18-55(mean 37.2)years.All patients underwent arthroscopic ACL reconstruction.During surgery,the ACL remnants of 40 patients were preserved(preservation group)and another 40 patients were completely removed(non-preservation group).The deviation rate of bone tunnel positioning points for tibia and femur,knee joint stability by drawer test and Lachman test,knee joint proprioception,and knee joint Ly-sholm score were compared between the two groups.Results There was no statistically significant difference in the deviation rate of tibial and femoral bone tunnel positioning points between the two groups(P＞0.05).After surgery,the preservation group showed much better knee joint stability at both postoperative 6 months(Lachman test:38-/2+vs.33-/7+;drawer test:38-/2+vs.34-/6+)and 12 months(Lachman test:37-/3+vs.31-/9+;drawer test:37-/3+vs.32-/8+,all P＜0.05).Moreover,the preservation group revealed minor difference between the reconstructed po-sition perception and actual angle of the knee joint at postoperative 6 months(2.85°±0.98° vs.4.18°±1.21°)and 12 months(2.33°±1.34° vs.3.74°±1.57°,both P＜0.05),and much higher Lysholm scores of the knee joint after surgery(3 months:76.1±4.2 vs.72.9±3.8;6 months:84.6±3.6 vs.81.5±4.3;12 months:94.2±3.3 vs.89.5±2.8,all P＜0.05).Conclusion During arthroscopic ACL reconstruction of ACL rupture,remnant preser-vation,in contrast to remnant removal,shows similar accuracy of bone tunnel positioning but is superior in knee joint functional recovery(stability,proprioception,and Lysholm score),and thus the comprehensive therapeutic effect is better.
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