Abstract
Objective To compare the short-term clinical outcomes of remnant-preserving anterior cruciate ligament (ACL) reconstruction with allografts and standard ACL reconstruction.Methods A prospective randomized controlled study was performed in 90 eligible consecutive patients with ACL rupture who were equally assigned into 2 groups from August 2008 through April 2010.Group A (n =45) received ACL reconstruction with remnant preservation technique and group B (n =45) the standard ACL reconstruction.4-strand allografts were used for all cases.The Lysholm score,International Knee Documentation Committee (IKDC) grading,and stability assessments (Lachman test,pivot shift test and KT-1000 side-to-side differences)were evaluated pre-and post-operatively.Synovial coverage of the graft and proprioception evaluation were estimated postoperation.Results Thirty-nine patients in group A and 41 in group B were followed up for at least 2 years(mean,25.7 months).At the last follow-up,the mean Lysholm score was 96.0 ± 6.0 in group A and 93.0 ± 7.5 in group B; there were 38 cases of IKDC grading A or B in group A and 40 in group B; 97.4％(38/39) in group A and 97.6％ (40/41) in group B had negative Lachman test results; 94.9％ (37/39) in group A and 87.8％ (36/41) in group B had negative pivot-shift tests; the KT-1000 side-to-side differences averaged 1.6 ± 1.7 mm in group A and 1.8 ± 1.8 mm in group B; the synovial coverage of grade A or B was 71.4％ (20/28)in group A and 70.4％ (19/27) in group B; the passive angle reproduction test at 15° was 3.6° ± 1.8° in group A and 3.9°± 2.2° in group B.There were no significant differences between the 2 groups regarding all the above indexes (P ＞ 0.05).Conclusion In the allograft ACL reconstruction,compared with standard ACL reconstruction,remnant-preserving ACL reconstruction may not result in significant improvements in postoperative stability,synovial coverage and proprioceptive recovery of the knee joint. Key words: Anterior cruciate ligament; Knee injuries; Arthroscopy; Reconstructive surgical procedures
Published Version
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