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Congenital Trigger Thumb

ICD-10 Classification / Treatment
Etiology / Natural History Associated Injuries / DDx
Anatomy Complications
Clinical Evaluation Follow-up Care
Xray / Diagnositc Tests Review References


Congenital Trigger Thumb ICD-10


Congenital Trigger Thumb Etiology / Epidemiology / Natural History

  • Etiology unknown
  • Male = female.
  • Affects @ 3/1000 children
  • 25% bilateral 

Congenital Trigger Thumb Anatomy

  •  Flexor pollicis longus (FPL) tendon thickened and catches on A1 pulley. 

Congenital Trigger Thumb Clinical Evaluation

  • Generally presents with fixed IP joint flexion deformity.  
  • May begin with triggering which progresses to fixed thumb IP flexion contraction 
  • Painless
  • May have "Notta's node" which is a promient flexor tendon nodule. 

Congenital Trigger Thumb Xray / Diagnositc Tests

  •  Thumb xrays are normal.

Congenital Trigger Thumb Classification / Treatment


Congenital Trigger Thumb Associated Injuries / Differential Diagnosis


Congenital Trigger Thumb Complications

Congenital Trigger Thumb Follow-up Care


Congenital Trigger Thumb Review References





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