[Compare the clinical results of double-bundle with single-bundle anterior cruciate ligament reconstruction].
OBJECTIVE
To compare the clinical results of double and single bundle anterior cruciate ligament (ACL) reconstruction.


METHODS
From 2005 May to December the data of 33 patients (4 lost follow) with double-bundle and 41 patients (8 lost follow) with single-bundle reconstruction of ACL using auto-hamstring tendons was retrospectively investigated. The follow-up was 14-22 months (average 18 months) of double-bundle group and 14-21 months (average 18 months) of single-bundle group. The IKDC, Lysholm and Tegner scores, KT-2000 and Biodex were used to evaluate the clinical results.


RESULTS
The IKDC, Lysholm and Tegner scores were increased significantly from 60, 66, 4 before the operation to 85, 94 and 6 respectively after the double-bundle reconstruction. The KT-2000 results showed that at 30 and 90 degree 134 N the anterior-posterior translations were significantly decreased from 5.8 and 2.4 mm to 1.2 and 1.1 mm respectively of the double-bundle group (P < 0.01). The peak torques of the extend and flex muscles of the involved knee at 60 degrees/s and 120 degrees/s were only at 81%, 87%, 76% and 85% of the contralateral knee of the double-bundle group. And the differences were statistically significant (P < 0.01). There were no differences between the two groups of any index, but the KT value at 30 degree and the extensor peak torque of the double-bundle group manifested a better tendency.


CONCLUSIONS
Both double-bundle and single-bundle ACL reconstruction can restore the stability and improve the function of the knee, and the double-bundle group shows a better tendency at the 30 degree stability and the extensor strength.
Xu
Yan
Y
Institute of Sports Medicine, the Third Hospital, Peking University, Beijing 100083, China.
Ao
Ying-fang
YF
Yu
Jia-kuo
JK
An
Hua
H
Liu
Xiao-peng
XP
D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007593:Joint Instability / Q000601:surgery; D007718:Knee Injuries / Q000601:surgery; D008297:Male; D013710:Tendons / Q000637:transplantation*; D014182:Transplantation, Autologous; D016896:Treatment Outcome