What is the hallmark symptom of PFPS?

What is the hallmark symptom of PFPS?

• A. Pain behind the kneecap that worsens with bending activities
• B. Sharp knee locking with extension
• C. Locking or catching due to meniscal tear
• D. Severe swelling after trauma

Answer: (B)

The feature most characteristic of patellofemoral pain syndrome is anterior knee pain centered around the patellofemoral joint that worsens with knee bending activities such as climbing stairs, squatting, kneeling, or jumping. This pattern happens because flexing the knee increases contact forces between the patella and femur, irritating the surrounding tissues and subchondral bone around the patella. Sharp locking with extension points more toward a meniscal tear or intra-articular pathology causing mechanical symptoms, not PFPS. Severe swelling after trauma suggests an acute intra-articular injury (like a ligament tear or meniscal tear), whereas PFPS typically has pain with activity but little or no dramatic swelling.

The feature most characteristic of patellofemoral pain syndrome is anterior knee pain centered around the patellofemoral joint that worsens with knee bending activities such as climbing stairs, squatting, kneeling, or jumping. This pattern happens because flexing the knee increases contact forces between the patella and femur, irritating the surrounding tissues and subchondral bone around the patella.

Sharp locking with extension points more toward a meniscal tear or intra-articular pathology causing mechanical symptoms, not PFPS. Severe swelling after trauma suggests an acute intra-articular injury (like a ligament tear or meniscal tear), whereas PFPS typically has pain with activity but little or no dramatic swelling.