Final answer:
When a client lacks dorsiflexion, knee valgus is a common compensation observed during a squat. Other compensations may include hip adduction and hip abduction.
Step-by-step explanation:
When a client lacks dorsiflexion, it means they have limited ability to flex their foot upward at the ankle joint. This can affect their squatting technique. One common compensation observed during a squat when dorsiflexion is lacking is knee valgus, which refers to the inward collapse of the knees. This occurs because the client's inability to dorsiflex their ankles causes the knees to cave inwards to maintain balance and stability.
Other compensations that may be observed during a squat include hip adduction, which is the movement of the hip inward towards the midline of the body, and hip abduction, which is the movement of the hip away from the midline of the body. These compensations are often seen when the client has poor hip stability and is unable to maintain proper alignment during the squat.