• Case Name: Non-traumatic Thumb pain
• Author’s Name: Dr Maulik S. Patel
• Author’s workplace: Private Clinic, Surat ( City ), India.
• Clinical Signs: Female – 25 yrs. Thumb base pain, snapping – few wks,
• Ultrasound: There is thickening of A1 Pulley of thumb at metacarpo-phalangeal joint. There is no tendon tear. Contralateral asymptomatic thumb shows normal A1 pulley.
• Diagnosis: Trigger thumb.

Ultrasound

There is avulsed central slip from base of middle phalanx.

Tiny bone flakes ( 1 mm ) are present at tip of avulsed tendon slip.

Retraction of tendon edge from phalanx base is 4 mm.

Central slip is intact at distal phalanx attachment site.

Radiograph (cropped magnified Image)

Tiny bone flake in soft tissue swelling on dorsal aspect of proximal interphalangeal joint of 5th finger.