Large magnetic resonance imaging-based medial posterior tibial slope is associated with time-dependent worsening of rotational knee laxity after anterior cruciate ligament reconstruction.

ABSTRACT:

Purpose

To examine the relationship between posterior tibial slope (PTS) and knee laxity before, during and after anterior cruciate ligament (ACL) reconstruction, using anterior tibial translation (ATT) measured as an arthrometer-based side-to-side difference and rotational laxity assessed during the pivot shift test via clinical grade and inertial sensor-based measurements of tibial acceleration and external rotational angular velocity (ERAV).

Methods

This retrospective cohort study assessed patients who underwent primary ACL reconstruction with subsequent hardware removal. Medial PTS (MPTS), lateral PTS (LPTS) and slope asymmetry ( | MPTS-LPTS | ) were measured using magnetic resonance imaging. Based on a recent review, binary strata were defined as MPTS ≥ 9.05° versus <9.

SUBMITTER: Abe K 

PROVIDER: S-EPMC12616262 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature