Clarke's Test (Patellar Grind Test) Indicates Patellofemoral dysfunction. - Patient with knee in extension. Push posterior on superior pole of patella then ask patient to perform active contraction of the quadriceps muscle. - Positive sign: Pain is produced in knee. @PTstep_ #Clarkes #Test #Patellar #Grind #clinical #video #physicalexam #knee #Patellofemoral #msk #orthopedics #sports
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