In Meyerding classifications, Grade I spondylolisthesis corresponds to which range of anterior translation?

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Multiple Choice

In Meyerding classifications, Grade I spondylolisthesis corresponds to which range of anterior translation?

Explanation:
Meyerding grading measures how far the upper vertebra has slipped forward relative to the one below, expressed as a percentage of the width of the lower vertebral body on a lateral view. The smallest slip is 0–25%, so Grade I corresponds to anterior translation of 0–25%. As the slip increases, the grades progress: 26–50% is Grade II, 51–75% is Grade III, 76–100% is Grade IV, and more than 100% (the upper vertebra completely out of place) is Grade V, or spondyloptosis. This grading helps gauge severity and often guides treatment decisions, with Grade I typically managed nonoperatively unless other factors are present.

Meyerding grading measures how far the upper vertebra has slipped forward relative to the one below, expressed as a percentage of the width of the lower vertebral body on a lateral view. The smallest slip is 0–25%, so Grade I corresponds to anterior translation of 0–25%. As the slip increases, the grades progress: 26–50% is Grade II, 51–75% is Grade III, 76–100% is Grade IV, and more than 100% (the upper vertebra completely out of place) is Grade V, or spondyloptosis. This grading helps gauge severity and often guides treatment decisions, with Grade I typically managed nonoperatively unless other factors are present.

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