Biomechanical Strategies for Obstacle Crossing in Patients with Anterior Cruciate Ligament Deficiency

  • Horng-Chaung Hsu
  • Shih-Wun Hong
  • Tung-Wu Lu
Keywords: gait, anterior cruciate ligament deficiency, obstacle crossing


The current study aimed to investigate the biomechanical control strategies in patients with anterior cruciate ligament deficiency (ACLD) when crossing obstacles of different heights. Eighteen patients with unilateral ACLD and sixteen age-matched healthy controls were recruited. They crossed obstacles of heights of 10%, 20% and 30% of their leg lengths at a self-selected pace while the kinematic and kinetic data were measured and analyzed using inverse dynamics analysis. Patients with ACLD were found to avoid using the quadriceps on both affected and unaffected sides during stance phase. Training programs on both quadriceps are needed for more efficient rehabilitation of the patients with unilateral ACLD.