A patient with knee snapping and grinding along the patellar region. Which orthopedic test would yield the most clinically relevant information?

A patient with knee snapping and grinding along the patellar region. Which orthopedic test would yield the most clinically relevant information?

• A. Lift off test
• B. Dreyer sign
• C. Craigs test
• D. Valgus overload test

Answer: (D)

The key idea is loading the patellofemoral joint to provoke symptoms. When there is snapping and grinding around the patella, you want a test that stresses the patellofemoral articulation and tracking. The valgus overload test does just that by applying valgus stress while the knee bears load, increasing contact forces in the patellofemoral joint and along the medial knee structures. If patellofemoral pathology such as maltracking or chondral wear is present, this maneuver is likely to reproduce pain, grinding, or snapping, giving clinically relevant information about the source of the symptoms. The other tests target areas not primarily involved in patellofemoral mechanics: the lift-off test assesses the shoulder, Craigs test measures femoral torsion at the hip, and the Dreyer sign is not specifically tied to patellofemoral pathology.

The key idea is loading the patellofemoral joint to provoke symptoms. When there is snapping and grinding around the patella, you want a test that stresses the patellofemoral articulation and tracking. The valgus overload test does just that by applying valgus stress while the knee bears load, increasing contact forces in the patellofemoral joint and along the medial knee structures. If patellofemoral pathology such as maltracking or chondral wear is present, this maneuver is likely to reproduce pain, grinding, or snapping, giving clinically relevant information about the source of the symptoms. The other tests target areas not primarily involved in patellofemoral mechanics: the lift-off test assesses the shoulder, Craigs test measures femoral torsion at the hip, and the Dreyer sign is not specifically tied to patellofemoral pathology.