knee instability – MySymptom

Why Do My Knees Feel Unstable and Shaky When Walking Down Stairs?

1. Introduction Knees feeling unstable and shaky when walking down stairs is primarily caused by quadriceps muscle weakness, patellofemoral tracking issues, or underlying structural damage to the ligaments or meniscus. Descending stairs requires the thigh muscles to lengthen while simultaneously bearing the entire weight of the body, creating an immense eccentric mechanical load on the … Read more

What does it mean when your knee gives out unexpectedly while walking?

1. Introduction When your knee gives out unexpectedly while walking, a phenomenon clinically known as joint buckling, it signals a sudden biomechanical failure in the structural support or neurological control of the lower extremity. The knee is a major weight-bearing hinge, required to seamlessly transfer the entire load of the body from the thigh to … Read more