Which is the most common injury associated with loss of midline stabilization?

• A. Knee ligament strain
• B. Shoulder impingement
• C. Facet joint damage and disc herniation
• D. Ankle sprain

Answer: (C)

Loss of midline stabilization means the core and spine can’t keep the spine aligned under load. When the trunk is unstable, the lumbar spine takes more bending, compressive, and shear stress during movements, which stresses the facet joints and the intervertebral discs. Repeated or heavy loading in this unstable state commonly leads to facet joint irritation or degeneration and disc herniation, making these the injuries most associated with trunk instability. While knee, shoulder, or ankle injuries can occur from various movement issues, they aren’t the typical direct consequences of losing midline stabilization during lifting or dynamic work.