[SpA] Synovial effusion radial fossa

Patient Positioning

Patient seated facing the examiner with extended arm, palm up. The arm is resting comfortably on the examination table. Placing a pillow under the elbow leads to full extension of the joint.

Probe Positioning

Place the transducer on a lateral sagittal plane over the humeroradial joint. Bony landmarks are the humeral capitellum cranial and radial head distal.