Dr. Kevin Yip

Dr Kevin Yip
Orthopaedic Surgeon
MBBS(UK), FRCS(EDIN), FAM(SING), FHKCOS(ORTHO)

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Eliciting fluctuation

Positioning.

The subject lies in the supine position with the leg extended. The examiner stands
level with the knee. He places thumb and index finger of one hand at each side of the knee,just beyond the patella. The interdigital web I-II of the other hand is on the suprapatellar pouch.

Procedure.

The examiner squeezes the suprapatellar pouch, pushing all the fluid downwards
under the patella, which forces the two fingers of the palpating hand apart .

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