Grade 1 hamstring strain is defined by an AKE deficit of less than what percentage?

Grade 1 hamstring strain is defined by an AKE deficit of less than what percentage?

• A. <15%
• B. 16-25%
• C. 26-35%
• D. 0-5%

Answer: (A)

Active knee extension deficit is used to gauge how severely the hamstrings are involved after a strain. In this approach, you measure how much the knee cannot actively straighten compared with the uninjured leg when the hip is held at about 90 degrees. The smaller that deficit, the milder the injury. Grade 1 is defined by an AKE deficit of less than 15 percent, which means the knee can extend almost normally and signals a milder strain with a better short-term prognosis. Higher deficits correspond to more severe injuries (16–25% for a moderate grade, 26–35% for a more severe grade). So the cut-off of less than 15 percent is the defining criterion for this grade.

Active knee extension deficit is used to gauge how severely the hamstrings are involved after a strain. In this approach, you measure how much the knee cannot actively straighten compared with the uninjured leg when the hip is held at about 90 degrees. The smaller that deficit, the milder the injury. Grade 1 is defined by an AKE deficit of less than 15 percent, which means the knee can extend almost normally and signals a milder strain with a better short-term prognosis. Higher deficits correspond to more severe injuries (16–25% for a moderate grade, 26–35% for a more severe grade). So the cut-off of less than 15 percent is the defining criterion for this grade.