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Function, stability similar between double-bundle and single-bundle reconstruction of anterior cruciate ligament
Gobbi A, et al. Clin Orthop Relat Res. 2011. doi:10.1007/s11999-011-1940-9
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Double-bundle anterior cruciate ligament reconstruction does not offer increased function or stability over single-bundle reconstruction, according to this study from Italian researchers.
To test the stability and function of double-bundle anterior cruciate ligament (ACL) reconstruction over single-bundle reconstruction, Alberto Gobbi, MD, and his team prospectively followed 60 patients who sustained isolated ACL injury. Thirty of the patients underwent single-bundle ACL reconstruction, with the other 30 undergoing double-bundle. Stability and range of motion was assessed clinically, with a Rolimeter used to measure anteroposterior stability and a pivot shift test used to determine rotational stability. With a minimum follow-up of 36 months, the team measured function through the IKDC, Noyes, Lysholm, Marx, and Tegner activity scales.
The authors reported similar postoperative residual anteroposterior laxity in both groups, with no difference in pivot shift test results and similar findings for range of motion. The authors noted, however, that double-bundle patients had to undergo more physical therapy before regaining their full range of motion. All other measured parameters were reported as being similar at the final follow-up.