Activity Rating Scale, Knee Stability in Sports/Cutting-Pivoting Ability scale, Knee Injury and Osteoarthritis Outcome Score, Lysholm Knee Score, and International Knee Documentation Committee Subjective Knee Form.

The arabic version of Marx activity rating scale measures four activities: running, deceleration, cutting, and pivoting; higher scores indicate an increased frequency of knee-related activities. The frequency of performing these activities in the past 12 months is measured on a five-point scale. Based on the four items, the maximum score is 16 (if they answer "four or more times a week" for all four), and the minimum score is zero. For each item, one point will be awarded for each frequency category, beginning with "one time every month." and if participants answered "less than once a month" for one of the items, they will be awarded zero points; "once in a month," one point; "once a week," two points; etc.

The items in the Arabic version of knee stability in sports/cutting -pivoting ability scale are ranked on a Likert scale of 1 to 5, with response categories consisting of (A) normal, (B) near-normal, (C) abnormal, (D) severe abnormal, and (E) dysfunctional. knee stability in sports is a scale that emphasizes giving way to sensations and instability in the knees during linear activities (i.e., running in straight lines, accelerating, and decelerating), which involve lower-level motions. The cutting -pivoting ability scale section concerns the frequency, ability, and discomfort of performing pivotal activities. However, the ordinal knee stability in sports/cutting -pivoting ability scale will be converted into continuous variables (A = 100, B = 75, C = 50, D = 25, E = 0) and an overall self-assessment evaluation of knee function (0 = worst, 100 = best) will be recorded.

There are five subscales with 42 items in the Knee Injury and Osteoarthritis Outcome Score questionnaire: Pain (9 items), Symptoms (7 items), Activities of Daily Living (17 items), Sport and Recreation (5 items), and Knee-related Quality of Life (QoL4). Each item wil be scored using a Likert scale ranging from 0 (no problem) to 4 (extreme problem). In addition, the subscale items will be rated on a scale of 0 to 100 using the following formula (100*average of subscale item scores/4*100), and higher scores indicate better health (100 = no knee problems) while low scores indicate poor health.