Yoon KH, Park SY, Park JY, et al. - This study was undertaken to evaluate the effect of medial and lateral posterior tibial slope (PTS) on long-term clinical outcomes and survivorship after anterior cruciate ligament (ACL) reconstruction applying hamstring autografts. Researchers retrospectively examined a sum of 232 patients (mean age, 28.2 ± 8.9 years) who had undergone primary ACL reconstruction between October 2002 to July 2007. They compared clinical outcomes (clinical scores, stability tests, and failure rate) between the groups at the last follow-up. The Kaplan–Meier method was applied to perform survival analysis. After primary ACL reconstruction, elevated medial (> 5.6°) and lateral (> 3.8°) PTS were correlated with a higher failure rate and lower survivorship at a minimum of 10-year follow-up applying hamstring autografts.