Editorial Commentary: The Anterolateral Ligament: The Emperor's New Clothes?

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomechanics

Background:

• The anterolateral ligament (ALL) has recently gained attention as a key structure resisting the pivot shift phenomenon in anterior cruciate ligament (ACL) injuries.
• The rapid adoption of ALL reconstruction techniques has outpaced rigorous scientific investigation into its precise role and efficacy.
• This commentary examines the lateral soft tissues involved in resisting rotational knee instability.

Discussion:

• Biomechanical testing is crucial for understanding the anatomy and function of soft tissue structures around the knee.
• The importance of the ALL in pivot shift control is questioned, suggesting a potentially overstated role.
• The iliotibial band (ITB) is proposed as a more significant contributor to lateral knee stability due to its anatomical course.

Key Insights:

• Laboratory testing indicates that lateral extra-articular tenodeses (LETs) are superior to ALL reconstruction in restoring knee stability.
• LETs may offer a more effective surgical solution for managing rotational instability associated with ACL injuries.
• Re-evaluating the primary stabilizers of the knee is essential for advancing surgical techniques.

Outlook:

• Further biomechanical studies are needed to fully elucidate the function of the ITB and other lateral structures.
• Clinical trials comparing LETs and ALL reconstruction are necessary to validate laboratory findings.
• A more evidence-based approach to surgical innovation in ACL reconstruction is warranted.