Final answer:
An anterior pelvic tilt refers to the forward tilt of the pelvis, which can affect spine alignment and hip and knee positioning. The Q-angle, which measures the angle between the femur and tibia, is normally 10-15 degrees and is typically larger in females due to their wider pelvis.
Step-by-step explanation:
The anterior pelvic tilt refers to the tilt of the pelvis in the forward direction, causing the front of the pelvis to be lower than the back. It is measured in terms of the angle between the femur and the vertical line of the tibia, known as the Q-angle.
The Q-angle is normally 10-15 degrees, with females typically having a larger Q-angle due to their wider pelvis. This tilt can affect the alignment of the spine and the positioning of the hips and knees.