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accessory muscle extensor tendons

Patient Positioning

Patient seated in front of the examiner, hand palm down resting on the examination table.

Probe Positioning

Place the transducer on a sagittal plane over the dorsal aspect of the wrist. Move the probe radially or ulnarly over the extensor tendon compartment of interest.

Probe Placement Hand
Probe Placement Hand

Note: patient with accessory muscle at the extensor tendon compartment