Abstract:Objective To explore the short-term clinical effects of anterior cruciate ligament (ACL) single-bundle reconstruction,and ACL combined with different methods of anterolateral ligament (ALL) reconstruction in the treatment of ACL injury.Methods A retrospective analysis of 79 caseswith ACL injuries diagnosed and treated in the Department of Sports Medicine of the first clinical medical college of Xinjiang Medical University from January 2020 to January 2021 was carried out.All the patients underwent arthroscopic surgery,including 65 males and 14 females,aged 17~58 years old with an average of (29.53±10.19) years old.Among 79 cases,25 cases underwent ACL autologous hamstring tendon single bundle reconstruction (group A),24 cases underwent ACL combined with ALL autologous hamstring tendon reconstruction (group B),18 cases underwent ACL combined with ALL iliotibial band reconstruction (group C),12 cases of ACL combined with ALL allogeneic hamstring tendon reconstruction (group D).Lysholm knee function score,knee injury and osteoarthritis outcome score (KOOS),knee stability in sports/cutting-pivoting ability(KSS/CPA)rating,Lachman test,axis shift test and neutral front drawer test were performed before and after surgery.A 6-stage rehabilitation program was adopted after the operation.The short-term clinical effects of four surgical treatments for ACL injuries were observed and compared.Results The follow-up period of 79 patients in this study was 7~20 months,with an average of (14.27±3.19) months.All patients in the four groups healed in thefirst stagewithout infection and other complications.The Lachman test and the neutral anterior drawer test were negative after surgery and during the last follow-up.The physical examination before operation and anesthesia were all high-grade axial displacement (≥grade Ⅱ).At the last follow-up,there were 4 patients in the group A with grade Ⅰ axial displacement,and the three combined reconstruction groups eliminated axial displacement.Comparing with pre-operation,the differences were statistically significant (P<0.05).The comparison between group A and three combined reconstruction groups significant differences(P<0.05),and there was no statistically significant difference between the combined reconstruction groups (P>0.05).The Lysholm score and KSS score of the four groups of patients were higher than those before the operation,and the differences were statistically significant (P<0.05),and there was no significant difference between the four groups (P>0.05).The three combined reconstruction groups in the CPA rating were all higher than those before the operation,the difference was statistically significant (P<0.05),the difference between the groups was not statistically significant (P>0.05).However,there was no statistical difference before and after surgery in the group A(P>0.05).The scores of all sub-items of KOOS were higher than those before operation,and the differences were statistically significant (P<0.05).The three combined reconstruction groups were better than the group A in the scores of daily life,sports and entertainment,and quality of life (P<0.05),and there was no statistically significant difference between the combined reconstruction groups(P>0.05).Conclusion Compared with simple ACL reconstruction,patients with ACL injury who were operated by ACL combined with ALL selected reconstruction can better restore knee joint function in a short period of time,and it is more suitable for people with higher requirements for knee joint rotation function.There is no significant difference between ACL combined with selected reconstruction technique in the short-term postoperative effect.