Surgical Below Knee Size Chart:

  SML MED LGE XLG
Ankle Circumference 6¼"-7¼" 7½"-9" 9¼"-10¾" 11"-12½"
Calf Circumference 11"-13½" 13"-15½" 15"-17½" 17½"-19½"
Length 14" & Over 14" & Over 14" & Over 14" & Over