2023 ISAKOS Biennial Congress ePoster
Elevated Posterior Tibial Slope is Associated with Anterior Cruciate Ligament Reconstruction Failures: A Systematic Review and Meta-Analysis
Benjamin Ormseth, BS, Columbus, OH UNITED STATES
Jeremy Adelstein, BS, Columbus, OH UNITED STATES
Andrew Garrone, MD, Columbus, OH UNITED STATES
Alex C. Dibartola, MD, MPH, Columbus, OH UNITED STATES
Ryan H. Barnes, MD, Columbus, OH UNITED STATES
Charles Qin, MD, Columbus , OH UNITED STATES
Christopher C. Kaeding, MD, Columbus, OH UNITED STATES
David C. Flanigan, MD, Columbus, OH UNITED STATES
Robert Siston, PhD, Columbus, OH UNITED STATES
Robert A Magnussen, MD, MPH, Worthington, OH UNITED STATES
Robert A. Duerr, MD, St Louis, MO UNITED STATES
The Ohio State University, Columbus, OH, UNITED STATES
FDA Status Not Applicable
Summary
The present meta-analysis demonstrated that patients with elevated posterior tibial slope on radiographs and MRI are at increased risk for ACL graft failure after primary ACL reconstruction
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Abstract
Objective
To evaluate the association of posterior tibial slope with anterior cruciate ligament (ACL) re-injury following primary ACL reconstruction.
Methods
Pubmed, Scopus, Embase, and CINAHL databases were searched from inception through March 1, 2021 to retrieve relevant studies. Comparative studies reporting posterior tibial slope (PTS) measurements in a cohort of patients experiencing ACL graft failure versus patients with intact primary ACL reconstruction, or studies comparing patients undergoing revision ACL reconstruction versus primary ACL reconstruction were included for analysis. A random-effects model was used to calculate the overall standardized mean difference (SMD) between groups. The following inclusion criteria were used: English language; full text available; Level I, II, or III evidence; human studies; and skeletally mature patients.
Results
After systematically screening 1912 studies, 15 studies met the inclusion/exclusion criteria. Radiographic measurements were used in 6 studies reporting medial PTS in 411 ACL failures versus 2808 controls. Patients with ACL failure had significantly higher medial PTS compared with controls (SMD, 0.50; 95% confidence interval (CI): 0.23, 0.77; P<.0001). Magnetic resonance imaging (MRI) was used in 9 studies reporting lateral PTS measurements in 641 patients with a failed ACL reconstruction compared to 705 controls. Seven of the MRI studies also measured medial PTS in 552 failures versus 641 controls. Patients with ACL Failure had significantly higher lateral PTS on MRI (SMD, 0.58; 95% CI 0.13, 1.03; P=0.012) and medial PTS on MRI (SMD, 0.59; 95% CI 0.23, 0.96; P=0.001) compared to controls.
Conclusions
The present meta-analysis demonstrated that patients with elevated PTS on radiographs and MRI are at increased risk for ACL graft failure after primary ACL reconstruction.