No difference in subjective and objective clinical outcomes between arthroscopic transtibial and open inlay posterior cruciate ligament reconstruction techniques in the treatment of multi-ligamentous knee injuries

Abstract

BackgroundThere is controversy regarding the optimal treatment of posterior cruciate ligament (PCL) -based multi-ligamentous injuries. The purpose of this study was to compare the subjective and objective clinical outcomes of arthroscopic transtibial reconstruction and tibial inlay reconstruction. MethodsFrom 2005 to 2013, a total of 135 patients with PCL-based multi-ligamentous injuries were consecutively identified. Patients were operated with the arthroscopic transtibial technique or the open tibial inlay technique group. Other injured structures were reconstructed or repaired simultaneously. All of the patients underwent a preoperative and postoperative physical examination, KT-1000 measurement, stress radiography under anesthesia and subjective evaluations including Tegner score, Lysholm score, American Academy of Orthopedic Surgeons (AAOS) score. ResultsFifty-seven patients (64.8%) underwent arthroscopic transtibial PCL reconstruction, and 31 patients (35.2%) underwent PCL reconstruction with the tibial inlay technique. The average follow up period was 45.9 ± 17.0 months (24–77 months). At the final follow up, for the arthroscopic transtibial group, the side-to-side difference of KT-1000 decreased from 13.5 ± 4.8 mm to 2.4 ± 3.4 mm (P < 0.001); the tibial posterior translation by stress radiograph decreased from 14.9 ± 7.1 mm to 4.6 ± 4.0 mm (P < 0.001). For the open inlay group, the side-to-side difference of KT-1000 decreased from 13.7 ± 5.2 mm to 2.2 ± 3.6 mm (P < 0.001) and the posterior translation by stress radiograph decreased from 14.9 ± 5.9 mm to 4.3 ± 3.9 mm (P < 0.001) at the final follow up. The inter-group clinical outcomes pre- and postoperatively were not significantly different at any time point. ConclusionThere was no statistically significant difference in objective and subjective outcome between the arthroscopic transtibial and open inlay PCL reconstruction in patients with multi-ligamentous injuries.