Summary
The aim of the study is to investigate whether time from injury influences the effect tibial slope has on anterior tibial translation.
Abstract
Introduction.
Previous work has reported that increased tibial slope is directly correlated with increased anterior tibial translation, predisposing patients to higher rates of anterior cruciate ligament graft failures over the long term. Whilst correction of excessive posterior tibial slope has been advocated at the time of revision surgery it is currently not indicated at the time of primary reconstruction. No study has investigated the potential relationship between tibial slope, anterior translation and time from injury.
The aim of the study is to investigate whether time from injury influences the effect tibial slope has on anterior tibial translation.
Methods
A total of 100 patients who underwent primary anterior cruciate ligament (ACL) reconstruction within our institution were retrospectively enrolled. All patients underwent MRI prior to surgery at various time points post injury. The anterior tibial translation and medial and lateral tibial slopes were measured using MRI. In addition, medial and lateral meniscus slope and lateral translation were also measured. The meniscal tear type was confirmed during arthroscopic surgery. Descriptive data was retrospectively reviewed from the medical records including time from injury to MRI. A post-hoc power analysis will be performed to determine if the study has sufficiently powered and additional patients recruited if required.
Results
All 100 patients have been identified. The study population consisted of 56 males and 44 females with a mean age if 24years (17-38). Measurements are in progress and will be completed within the next 2 months. Final conclusions cannot be made until the dataset is complete.