Procedure

  1. Patient supine with legs straight
  2. Examiner measures the circumference of the thigh at 10 cm superior to the patella
  3. Examiner compares results bilaterally

 

Interpretation

Positive Thigh Circumference Test

Asymmetry > 3 cm: Quadriceps muscle atrophy, which may be secondary to disuse syndromes or knee joint pathology (osteoarthritis or ligamentous damage at the knee that causes pain) or nerve lesions

 

Clinical notes

Mild asymmetry from side to side is a common finding (dominant vs. nondominant side).