Final answer:
Meyerding's Grading Method is a system used to classify the severity of spondylolisthesis. It is based on the percentage of slippage and helps determine treatment decisions.
Step-by-step explanation:
Meyerding's Grading Method is a system used to classify the severity of spondylolisthesis, which is a condition where one vertebra slips forward over the vertebra below it. It is named after the American orthopedic surgeon, William H. Meyerding, who developed this method. The grading system is based on the percentage of slippage and is divided into four grades, ranging from Grade 1 (mild) to Grade 4 (severe).
Grade 1: Less than 25% slippage. Grade 2: 25-49% slippage. Grade 3: 50-74% slippage. Grade 4: 75-100% slippage. The Meyerding grading method helps doctors determine the severity of spondylolisthesis and guide treatment decisions, such as whether surgery is necessary.