//fpnotebook.com/
Quadriceps Femoris Muscle Angle
Aka: Quadriceps Femoris Muscle Angle, Q Angle of the Knee
- Method
- Position patient in slight knee flexion (15 degrees)
- Measure angle between 2 lines
- Line 1: Anterior Superior Iliac to Patella center
- Line 2: Tibial Tubercle to Patella center
- Images

- Interpretation: Normal Measurement
- Men: 11 to 17 degrees
- Women: 14 to 20 degrees (due to gynecoid Pelvis)
- Causes: Increased Q angle
- Knock-Kneed (Genu Valgum)
- Excessive Femoral Anteversion
- Medial Tibial Torsion
- Laterally positioned tibial tuberosity
- Tight lateral Retinaculum
- Weakness of vastus medialis oblique
- High riding Patella (Patella alta)
- Associated Conditions: Risks associated with increased Q angle
- Patellar Subluxation
- References
- Agliettis (1983) Clin Ortho