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No difference in IKDC scores seen between single- vs double-bundle ACL reconstruction at 2 years
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Researchers of this randomized controlled trial of patients who underwent either anatomic single- or double-bundle ACL reconstruction using hamstring tendon showed no differences in both IKDC subjective and objective scores at 2-year follow-up.
The trial included 62 consecutive patients available at final 2-year follow-up. According to researchers, 28 patients underwent single-bundle ACL reconstruction and 34 patients underwent double-bundle ACL reconstruction. Researchers calculated the IKDC subjective and objective sum scores for each patient at final follow-up.
Patients in the single-bundle group scored a mean total of 86.6 ± 16.2 points at follow-up for IKDC subjective scores. Patients in the double-bundle group scored an average of 4.9 points better (91.5 ± 7.2) than patients in the single-bundle group but, according to results of the Mann-Whitney U test, the difference was not significant.
In total, 20 patients in the single-bundle group were considered normal using IKDC 2000 objective scores; six patients were nearly normal; and one patient was considered abnormal. In the double-bundle group, 24 patients reached normal status and 10 patients achieved nearly normal scores. The difference between the single- and double-bundle groups, according to a results of the Fisher exact test, was not statistically significant.
Researchers noted the Laxitester measurements showed no significant difference between the groups for anteroposterior translation in the neutral position or in internal rotation or external rotation. However, the double-bundle group experienced more improvement in rotational laxity in external rotation compared with the single-bundle group, but no relevant clinical difference was found.
“The results of this study showed no differences between the groups according to the IKDC 2000 subjective criteria, the primary endpoint. The hypothesis that the [double-bundle] DB technique is superior to the [single-bundle] SB technique was not confirmed by our results. In addition, no significant differences were seen in IKDC objective score,” researchers wrote. – by Robert Linnehan
Disclosure: The researchers report no relevant financial disclosures.
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