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©2013 UpToDate ® Print Email Beighton score for joint laxity* Specific joint laxity Left Right Passive apposition of thumb to forearm 1 1 Passive hyperextension of fingers 1 1 Active hyperextension of elbow >10 degress 1 1 Active hyperextension of knee >10 degrees 1 1 Ability to flex spine and place palms to floor without bending knees 1 * This score is based upon joint laxity of the above nine anatomic sites. It is calculated by adding all points, with nine being the highest total possible score. A score of four or higher is generally considered an indication of generalized joint laxity.