Objective To explore the efficacy of fixed-loop fixation and adjustable-loop fixation in arthroscopic anterior cruciate ligament(ACL)reconstruction with excessively short femoral tunnel.Methods A total of 493 patients undergoing ACL reconstruction at our hospital from January 2019 to July 2020 were reviewed,including 57 patients with femoral tunnel＜30 mm and 47 patients ultimately included.According to the fixation method,they were divided into EndoButton group(n=31)and TightRope group(n=16).The International Knee Documentation Committee(IKDC)score,Lysholm score,and Tegner score were used to evaluate joint function at 6 and 12 months postoperatively,respectively.The Lachman test and anterior drawer test were used to evaluate joint laxity at 12 months postoperatively.The clinical effects of the two fixation methods were compared.Results At 6 months postoperatively,the IKDC scores of the EndoButton group and TightRope group were(64.1±11.0)points and(62.6±9.2)points,respectively,with no significant difference(t=0.464,P=0.645).The Lysholm scores were(81.9±10.6)points and(85.3±9.3)points,with no significant difference(t=-1.079,P=0.286).The Tegner scores were(2.2±0.9)points and(1.9±0.9)points,with no statistically significant difference(t=0.933,P=0.356).At 12 months postoperatively,the IKDC scores of the EndoButton group and TightRope group were(81.4±9.3)points and(78.2±9.2)points,with no statistically significant difference(t=1.068,P=0.291).The Lysholm scores were(94.6±6.1)points and(93.4±7.4)points,with no statistically significant difference(t=0.626,P=0.534).The Tegner scores were(3.8±1.0)points and(3.4±1.2)points,with no statistically significant difference(t=1.402,P=0.168).There was no significant difference in the Lachman test and front drawer test between the two groups at 12 months after surgery(Z=-0.039,P=0.969;Z=-0.294,P=0.769).Conclusion In arthroscopic ACL reconstruction surgery,both EndoButton(15 mm)and TightRope can achieve good clinical results for excessively short femoral tunnel(＜30 mm).

Objective To explore the efficacy of fixed-loop fixation and adjustable-loop fixation in arthroscopic anterior cruciate ligament(ACL)reconstruction with excessively short femoral tunnel.Methods A total of 493 patients undergoing ACL reconstruction at our hospital from January 2019 to July 2020 were reviewed,including 57 patients with femoral tunnel＜30 mm and 47 patients ultimately included.According to the fixation method,they were divided into EndoButton group(n=31)and TightRope group(n=16).The International Knee Documentation Committee(IKDC)score,Lysholm score,and Tegner score were used to evaluate joint function at 6 and 12 months postoperatively,respectively.The Lachman test and anterior drawer test were used to evaluate joint laxity at 12 months postoperatively.The clinical effects of the two fixation methods were compared.Results At 6 months postoperatively,the IKDC scores of the EndoButton group and TightRope group were(64.1±11.0)points and(62.6±9.2)points,respectively,with no significant difference(t=0.464,P=0.645).The Lysholm scores were(81.9±10.6)points and(85.3±9.3)points,with no significant difference(t=-1.079,P=0.286).The Tegner scores were(2.2±0.9)points and(1.9±0.9)points,with no statistically significant difference(t=0.933,P=0.356).At 12 months postoperatively,the IKDC scores of the EndoButton group and TightRope group were(81.4±9.3)points and(78.2±9.2)points,with no statistically significant difference(t=1.068,P=0.291).The Lysholm scores were(94.6±6.1)points and(93.4±7.4)points,with no statistically significant difference(t=0.626,P=0.534).The Tegner scores were(3.8±1.0)points and(3.4±1.2)points,with no statistically significant difference(t=1.402,P=0.168).There was no significant difference in the Lachman test and front drawer test between the two groups at 12 months after surgery(Z=-0.039,P=0.969;Z=-0.294,P=0.769).Conclusion In arthroscopic ACL reconstruction surgery,both EndoButton(15 mm)and TightRope can achieve good clinical results for excessively short femoral tunnel(＜30 mm).