Epicondyle

epi meaning "upon"; condyle meaning "knuckle" or "rounded articular area(Wiki) Often refered to as the medial or lateral epicondyle of the knee. Located on the largest breadth above the medial and lateral meniscus.

1.To thus measure the “symmetry” of the knee, the investigator would then feel for the epicondyles of the femur by feeling for the largest breadth.
2. The knees bent at an angle of 90°s forces the medial and lateral epicondyles to be exposed and available to measure.