Abstract
Objective To compare the primary clinical results of the anteromedial portal (AMP) and accessory anteromedial portal (AAMP) techniques for femoral tunnel drilling in single-bundle anterior cruciate ligament (ACL) reconstruction. Methods Data of isolated ACL rupture patients who had undergone single-bundle ACL reconstruction with autologous semitendinosus and gracilis tendons from March of 2012 to February of 2014 were retrospectively analyzed. The femoral tunnels were drilled with AMP techniques in 14 patients (group AMP) and with AAMP techniques in 23 patients (group AAMP). All the patients were followed up for 6 to 29 months. At the latest follow-up the Lysholm, Tegner and international knee documentation committee (IKDC) scores were used to estimate knee joint function, while the Lachman test and Pivot-shift test were used to estimate knee joint insta-bility. Results The average follow-up time was 16.07±7.31 months in group AMP and 13.35±5.92 months in group AAMP. In group AMP, the Lysholm, Tegner and IKDC average scores were 89.86±7.90, 8.64±1.65 and 89.31±8.16, respectively. While they were 92.17±6.72, 8.91±1.16 and 90.89±7.80 in group AAMP, respectively. In group AMP the Lachman test was negative in 11 patients and positive in 3 patients. In group AAMP the Lachman test was negative in 20 patients and positive in 3 patients. The Pivot-shift test was negative in 9 patients, positive in 5 patients and negative in 20 patients, positive in 3 patients in group AMP and AAMP, respectively. There were no significant differences in Lysholm, Tegner, IKDC scores, the negative rates of Lachman and Pivot-shift tests between two groups. Conclusion Single-bundle ACL reconstructions using AMP and AAMP techniques for femoral tunnel drilling have similar excellent primary clinical results. Key words: Anterior cruciate ligament reconstruction; Knee joint; Arthroscopy
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