Which statement about the interspinous ligament is correct?

Which statement about the interspinous ligament is correct?

• A. It Has No Effect on Movement
• B. It Limits Extension
• C. It Limits Flexion
• D. It Limits Lateral Flexion

Answer: (C)

The interspinous ligament’s job is to check forward bending of the spine. It runs between adjacent spinous processes, so when you flex the spine and the vertebrae tilt toward each other, these ligaments become taut and resist that motion, helping to limit flexion and provide segmental stability. In extension, they are slack, so they don’t significantly restrict that movement. The main structures that limit lateral flexion are the intertransverse ligaments, while tightness of the interspinous ligaments during flexion is what makes the statement true.

The interspinous ligament’s job is to check forward bending of the spine. It runs between adjacent spinous processes, so when you flex the spine and the vertebrae tilt toward each other, these ligaments become taut and resist that motion, helping to limit flexion and provide segmental stability. In extension, they are slack, so they don’t significantly restrict that movement. The main structures that limit lateral flexion are the intertransverse ligaments, while tightness of the interspinous ligaments during flexion is what makes the statement true.