Dr. Kevin Yip

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

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Passive pronation

Positioning.

The subject stands with the arm hanging and the elbow bent to a right angle.
The examiner stands in front of the subject. Both hands encircle the distal forearm in such a way that the heel of the contralateral hand is placed against the volar part of the ulna and the fingers of the other hand against the dorsal aspect of the
radius.

Procedure

Bring the subject’s forearm into full pronation by a simultaneous movement of both
hands in opposite directions.

Common mistakes:

• The subject’s shoulder is brought into
abduction.
• Too much local pressure on the radius/ulna
may provoke tenderness.

Normal functional anatomy:

• Range: about 85°
• End-feel: elastic
• Limiling slrllclflres: stretching of the interosseous membrane and squeezing of the insertion of the bicipital tendon between the radial tuberosity and the ulna.

Common pathological situations.
The movement is painful in lesions of the proximal radioulnar joint, in bicipitoradial bursitis and in tendinitis of the biceps brachii at the insertion onto the radial tuberosity.

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