Cabot’s Popliteal Sign used to test the meniscus of the knee joint.
- Patient supine with legs crossed in “figure 4” position (hip abducted, knee flexed at around 110°, heel resting over opposite knee).
- Examiner palpates flexed knee joint line with thumb and index finger and places the other hand at the patient’s ankle.
- The patient is then instructed to attempt to isometrically straighten the knee while the examiner applies resistance to that motion.
Positive Cabot’s Popliteal Sign
Joint line pain: Meniscal lesion or tear
The motion of Cabot’s Popliteal sign increases compressive force at the knee which may aggravate a torn or inflamed meniscus.