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Spondylolisthesis is measured in grades or degrees of slippage.There are 4 grades., each accounting for 25% slippage. if a Person is said to have a Grade 2 Spondylolisthesis, it means that the 2 adjacent vertebra maintain a 50% contact with one another, If things were correct there would be no contact. Grades are measured by taking a side view X-Ray. Other diagnostic methods, such as CT scans or MRIs might be used to determine the damage to surrounding tissues.

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14y ago

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