Proprioception Analysis following Anterior Cruciate Ligament Reconstruction using Stabilometry: A Prospective,...

Area of Science:

• Orthopedics
• Sports Medicine
• Biomechanics

Background:

• Conflicting reports exist on knee proprioception deficits in anterior cruciate ligament (ACL) rupture and post-reconstruction.
• Proprioceptive assessment methods vary, impacting reliability in clinical settings.

Purpose of the Study:

• To investigate knee proprioception in patients with ACL rupture compared to healthy controls.
• To evaluate the effect of ACL reconstruction on knee proprioception.
• To determine the relationship between proprioception, ligament laxity, and functional outcome scores.

Main Methods:

• Dynamic single-leg stance postural stabilometry was used to assess proprioception in 100 subjects (50 ACL rupture patients, 50 controls).
• Instrumented knee ligament laxity and knee outcome scores were also measured.
• 34 ACL patients were reassessed post-reconstruction.

Main Results:

• ACL rupture patients exhibited a significant proprioceptive deficit compared to their contralateral knee and controls.
• ACL reconstruction led to significant improvements in knee proprioception.
• Pre-operative outcome scores correlated with proprioception, but this correlation was lost post-operatively.

Conclusions:

• ACL rupture results in a measurable proprioceptive deficit that improves after surgical reconstruction.
• Knee proprioception is more strongly correlated with functional outcomes than ligament laxity.
• Proprioception may serve as a superior objective measure for assessing functional knee deficits post-ACL injury.